Flexible and Ultrasoft Inorganic 1D Semiconductor and Heterostructure Systems...Pawan Kumar
Â
Low dimensionality and high flexibility are key demands for flexible electronic semiconductor devices. SnIP, the first atomic-scale double helical semiconductor combines structural anisotropy and robustness with exceptional electronic properties. The benefit of the double helix, combined with a diverse structure on the nanoscale, ranging from strong covalent bonding to weak van der Waals interactions, and the large structure and property anisotropy offer substantial potential for applications in energy conversion and water splitting. It represents the next logical step in downscaling the inorganic semiconductors from classical 3D systems, via 2D semiconductors like MXenes or transition metal dichalcogenides, to the first downsizeable, polymer-like atomic-scale 1D semiconductor SnIP. SnIP shows intriguing mechanical properties featuring a bulk modulus three times lower than any IV, III-V, or II-VI semiconductor. In situ bending tests substantiate that pure SnIP fibers can be bent without an effect on their bonding properties. Organic and inorganic hybrids are prepared illustrating that SnIP is a candidate to fabricate flexible 1D composites for energy conversion and water splitting applications. SnIP@C3N4 hybrid forms an unusual soft material coreâshell topology with graphenic carbon nitride wrapping around SnIP. A 1D van der Waals heterostructure is formed capable of performing effective water splitting.
TiO2-HfN Radial Nano-Heterojunction: A Hot Carrier Photoanode for Sunlight-Dr...Pawan Kumar
Â
The lack of active, stable, earth-abundant, and visible-light absorbing materials to replace
plasmonic noble metals is a critical obstacle for researchers in developing highly efficient and costeffective photocatalytic systems. Herein, a coreâshell nanotube catalyst was fabricated consisting of
atomic layer deposited HfN shell and anodic TiO2 support layer with full-visible regime photoactivity
for photoelectrochemical water splitting. The HfN active layer has two unique characteristics: (1) a
large bandgap between optical and acoustic phonon modes (2) and no electronic bandgap, which
allows a large population of long life-time hot carriers, which are used to enhance the photoelectrochemical performance. The photocurrent density (â2.5 mA¡cmâ2 at 1 V vs. Ag/AgCl) obtained in
this study under AM 1.5G 1 Sun illumination is unprecedented, as it is superior to most existing
plasmonic noble metal-decorated catalysts and surprisingly indicates a photocurrent response that
extends to 730 nm. The result demonstrates the far-reaching application potential of replacing active
HER/HOR noble metals such as Au, Ag, Pt, Pd, etc. with low-cost plasmonic ceramics.
A ruthenium trinuclear polyazine complex was synthesized and subsequently immobilized through
complexation to a graphene oxide support containing phenanthroline ligands (GO-phen). The developed
photocatalyst was used for the photocatalytic reduction of CO2 to methanol, using a 20 watt white cold
LED flood light, in a dimethyl formamideâwater mixture containing triethylamine as a reductive
quencher. After 48 h illumination, the yield of methanol was found to be 3977.57 5.60 mmol gcat
1.
The developed photocatalyst exhibited a higher photocatalytic activity than graphene oxide, which
provided a yield of 2201.40 8.76 mmol gcat
1. After the reaction, the catalyst was easily recovered and
reused for four subsequent runs without a significant loss of catalytic activity and no leaching of the
metal/ligand was detected during the reaction.
Synthesis of flower-like magnetite nanoassembly: Application in the efficient...Pawan Kumar
Â
A facile approach for the synthesis of magnetite microspheres with flower-like morphology is reported that proceeds via the reduction of iron (III) oxide under hydrogen atmosphere. The ensuing magnetic catalyst is well characterized by XRD, FE-SEM, TEM, N2 adsorption-desorption isotherm and MĂśssbauer spectroscopy and explored for a simple yetbut efficient transfer hydrogenation reduction of a variety of nitroarenes to respective anilines in good to excellent yields (up to 98%) employing hydrazine hydrate. . The catalyst could be easily separated at the end of reaction using an external magnet and can be recycled up to 10 times without any loss in catalytic activity.
Flexible and Ultrasoft Inorganic 1D Semiconductor and Heterostructure Systems...Pawan Kumar
Â
Low dimensionality and high flexibility are key demands for flexible electronic semiconductor devices. SnIP, the first atomic-scale double helical semiconductor combines structural anisotropy and robustness with exceptional electronic properties. The benefit of the double helix, combined with a diverse structure on the nanoscale, ranging from strong covalent bonding to weak van der Waals interactions, and the large structure and property anisotropy offer substantial potential for applications in energy conversion and water splitting. It represents the next logical step in downscaling the inorganic semiconductors from classical 3D systems, via 2D semiconductors like MXenes or transition metal dichalcogenides, to the first downsizeable, polymer-like atomic-scale 1D semiconductor SnIP. SnIP shows intriguing mechanical properties featuring a bulk modulus three times lower than any IV, III-V, or II-VI semiconductor. In situ bending tests substantiate that pure SnIP fibers can be bent without an effect on their bonding properties. Organic and inorganic hybrids are prepared illustrating that SnIP is a candidate to fabricate flexible 1D composites for energy conversion and water splitting applications. SnIP@C3N4 hybrid forms an unusual soft material coreâshell topology with graphenic carbon nitride wrapping around SnIP. A 1D van der Waals heterostructure is formed capable of performing effective water splitting.
TiO2-HfN Radial Nano-Heterojunction: A Hot Carrier Photoanode for Sunlight-Dr...Pawan Kumar
Â
The lack of active, stable, earth-abundant, and visible-light absorbing materials to replace
plasmonic noble metals is a critical obstacle for researchers in developing highly efficient and costeffective photocatalytic systems. Herein, a coreâshell nanotube catalyst was fabricated consisting of
atomic layer deposited HfN shell and anodic TiO2 support layer with full-visible regime photoactivity
for photoelectrochemical water splitting. The HfN active layer has two unique characteristics: (1) a
large bandgap between optical and acoustic phonon modes (2) and no electronic bandgap, which
allows a large population of long life-time hot carriers, which are used to enhance the photoelectrochemical performance. The photocurrent density (â2.5 mA¡cmâ2 at 1 V vs. Ag/AgCl) obtained in
this study under AM 1.5G 1 Sun illumination is unprecedented, as it is superior to most existing
plasmonic noble metal-decorated catalysts and surprisingly indicates a photocurrent response that
extends to 730 nm. The result demonstrates the far-reaching application potential of replacing active
HER/HOR noble metals such as Au, Ag, Pt, Pd, etc. with low-cost plasmonic ceramics.
A ruthenium trinuclear polyazine complex was synthesized and subsequently immobilized through
complexation to a graphene oxide support containing phenanthroline ligands (GO-phen). The developed
photocatalyst was used for the photocatalytic reduction of CO2 to methanol, using a 20 watt white cold
LED flood light, in a dimethyl formamideâwater mixture containing triethylamine as a reductive
quencher. After 48 h illumination, the yield of methanol was found to be 3977.57 5.60 mmol gcat
1.
The developed photocatalyst exhibited a higher photocatalytic activity than graphene oxide, which
provided a yield of 2201.40 8.76 mmol gcat
1. After the reaction, the catalyst was easily recovered and
reused for four subsequent runs without a significant loss of catalytic activity and no leaching of the
metal/ligand was detected during the reaction.
Synthesis of flower-like magnetite nanoassembly: Application in the efficient...Pawan Kumar
Â
A facile approach for the synthesis of magnetite microspheres with flower-like morphology is reported that proceeds via the reduction of iron (III) oxide under hydrogen atmosphere. The ensuing magnetic catalyst is well characterized by XRD, FE-SEM, TEM, N2 adsorption-desorption isotherm and MĂśssbauer spectroscopy and explored for a simple yetbut efficient transfer hydrogenation reduction of a variety of nitroarenes to respective anilines in good to excellent yields (up to 98%) employing hydrazine hydrate. . The catalyst could be easily separated at the end of reaction using an external magnet and can be recycled up to 10 times without any loss in catalytic activity.
Photo-assisted oxidation of thiols to disulfides using cobalt ââNanorustââ un...Pawan Kumar
Â
Heterogeneous ââNanorustââ containing cobalt oxide has been developed for the visible light assisted
oxidation of thiols to disulfides using molecular oxygen as an oxidant under alkaline free conditions and
therefore more environmentally friendly. Pyrolysis of heterogenized tetrasulfonated cobalt(II) phthalocyanine
(CoPcS) supported on mesoporous ceria (CeO2) transforms it into a novel heterogeneous ââNanorustââ
containing CoOx-C,N@CeO2 which exhibited higher catalytic activity than the homogeneous CoPcS as well
as the ceria immobilized CoPcS catalyst. Importantly, these catalysts could easily be recovered and recycled
for several runs, which makes the process greener and cost-effective.
Heterostructured nanocomposite tin phthalocyanine@mesoporous ceria (SnPc@CeO2...Pawan Kumar
Â
Heterostructured tin phthalocyanine supported to mesoporous ceria was synthesized and used a
photocatalyst for CO2 reduction under visible light. The photoreduction CO2 activities of the
heterostructures were investigated in the presence of triethylamine as sacrificial agent. The developed
photocatalyst exhibited high catalytic activity for photoreduction of CO2 and after 24 hours of visible
light irradiation 2342 mmol g1 cat of methanol (fMeOH Âź 0.0223 or 2.23%) and 840 mmol g1 cat of CO
(fCO Âź 0.0026 or 0.26%) were obtained as the major reaction products. The methanol formation rate
(RMeOH) and CO formation rate (RCO) was found to be 97.5 mmol h1 g1 cat and 35.0 mmol h1 g1 cat
respectively. While under the identical experimental conditions mesoporous ceria (meso-CeO2) gave
only 316 mmol g1 cat of methanol (fMeOH Âź 0.003 or 0.30%) and 126 mmol g1 cat CO (fCO Âź 0.0004
or 0.04%) with product formation rate RMeOH Âź 13.2 mmol h1 g1 cat and RCO Âź 5.3 mmol h1 g1 cat.
Furthermore, the recovered catalyst showed consistent catalytic activity for at least five runs without any
significant loss in product yields
Nanostructured composite materials for CO2 activationPawan Kumar
Â
The increasing energy crisis and the worsening global climate caused by the excessive
utilization of the fossil fuel have boosted tremendous research about CO2 capture, storage and
utilization. Among these approaches, utilization of carbon dioxide to produce valuable chemicals
is preferred than dumping it. Particularly, utilization of CO2 as feedstock for the photocatalytic
conversion into valuable products is a viable approach for harvesting solar radiation as an energy
source and to mitigate increasing CO2 concentration. Artificial photosynthesis by using
nanostructured materials as photocatalyst has immense potential to convert carbon dioxide into
renewable fuels such as methanol/CO etc. The present chapter focuses on the synthesis, characterization and application of various nanostructured materials for CO2 activation including
photoreduction of CO2 to valuable products.
Synthesis of flower-like magnetite nanoassembly: Application in the efficient...Pawan Kumar
Â
A facile approach for the synthesis of magnetite microspheres with flower-like morphology is reported
that proceeds via the reduction of iron(III) oxide under a hydrogen atmosphere. The ensuing magnetic
catalyst is well characterized by XRD, FE-SEM, TEM, N2 adsorption-desorption isotherm, and
MĂśssbauer spectroscopy and explored for a simple yet efficient transfer hydrogenation reduction of a
variety of nitroarenes to respective anilines in good to excellent yields (up to 98%) employing hydrazine
hydrate. The catalyst could be easily separated at the end of a reaction using an external magnet and
can be recycled up to 10 times without any loss in catalytic activity.
Polymeric carbon nitride-based photocatalysts for photoreforming of biomass d...Pawan Kumar
Â
Photoreforming of biomass to value-added chemicals and fuels is a chemical approach to extract photosynthetically-trapped energy in complex biomolecules which otherwise disintegrate naturally in the environment. Designing precise photocatalytic materials that can selectively break the sturdy, nature-designed biomass with multiplex chemical composition/bonding and inaccessible sites is central to deploying this technology. Polymeric carbon nitride (CN) comprised of a 2D network of condensed heptazine/triazine (C6N7/C3N3) core has shown great promise for photoreforming of biomass derivatives due to intriguing physicochemical and optical properties. This review comprehensively summarizes the state-of-the-art applications of CN-based photocatalysts for the conversion of lignocellulosic biomass derivatives. Various chemical and structural modifications in CN structure such as doping, surface functionalization, hybridization entailing to higher selectivity and conversion have been discussed aiming at providing valuable guidance for future CN-based materials design.
Water-splitting photoelectrodes consisting of heterojunctions of carbon nitri...Pawan Kumar
Â
Quinary and senary non-stoichiometric double perovskites such as Ba2Ca0.66Nb1.34âxFexO6âδ (BCNF) have been utilized for gas sensing, solid oxide fuel cells and thermochemical CO2 reduction. Herein, we examined their potential as narrow bandgap semiconductors for use in solar energy harvesting. A cobalt co-doped BCNF, Ba2Ca0.66Nb0.68Fe0.33Co0.33O6âδ (BCNFCo), exhibited an optical absorption edge at âź800 nm, p-type conduction and a distinct photoresponse up to 640 nm while demonstrating high thermochemical stability. A nanocomposite of BCNFCo and g-C3N4 (CN) was prepared via a facile solvent-assisted exfoliation/blending approach using dichlorobenzene and glycerol at a moderate temperature. The exfoliation of g-C3N4 followed by wrapping on perovskite established an effective heterojunction between the materials for charge separation. The conjugated 2D sheets of CN enabled better charge migration resulting in increased photoelectrochemical performance. A blend composed of 40 wt% perovskites and CN performed optimally, whilst achieving a photocurrent density as high as 1.5 mA cmâ2 for sunlight-driven water-splitting with a Faradaic efficiency as high as âź88%.
Hot hole transfer from Ag nanoparticles to multiferroic YMn2O5 nanowires enab...Pawan Kumar
Â
Plasmonic hot carriers with a nonthermal distribution of kinetic energies have opened up new avenues in photovoltaics, photodetection and photocatalysis. While several articles have reported ultrafast hot electron injection from coinage metals into n-type semiconductors across Schottky barriers and efficient subsequent utilization of injected hot electrons, reports of hot hole harvesting are comparatively rare due to the difficulty in forming Schottky junctions between p-type semiconductors and high work function metals. In this communication, we report the fabrication, characterization and theoretical calculations of a novel integrated multiferroic-plasmonic system comprising YMn2O5 nanowires decorated on their surface with Ag nanoparticles (NPs). A Schottky barrier for holes exists at the YMn2O5-Ag hetero-interface and hot holes were injected from Ag across this barrier. The synthesized hybrid along with bare Ag NPs were tested for Raman surface photocatalytic reduction of 4-NBT (4-nitrobenzenethiol) to DMAB (p, pâ˛-dimercaptoazobenzene) where the composite demonstrated superior activity compared to the bare metal. Ultraviolet photoelectron spectroscopy (UPS) revealed a significantly reduced work function of the composite compared to the pristine Ag, indicative of more energetic hot electrons on the surface of the composite required for efficient photoreduction. Density functional theory (DFT)-based calculations revealed localization of molecular orbitals supportive of a possible hole transfer from YMn2O5 to Ag and a reorganization of electronic states beneficial for plasmon-induced charge carrier enhancement. DFT results also indicated a purely electronic contribution to the ferroelectric polarization of YMn2O5 over and above the ionic contribution, which originated from the magnetic polarization of O 2p states.
Boosting Photocatalytic Activity Using Carbon Nitride Based 2D/2D van der Waa...Pawan Kumar
Â
The surging demand for energy and staggering pollutants in the environment have geared the scientific community to explore sustainable pathways that are economically feasible and environmentally compelling. In this context, harnessing solar energy using semiconductor materials to generate charge pairs to drive photoredox reactions has been envisioned as a futuristic approach. Numerous inorganic crystals with promising nanoregime properties investigated in the past decade have yet to demonstrate practical application due to limited photon absorption and sluggish charge separation kinetics. Two-dimensional semiconductors with tunable optical and electronic properties and quasi-resistance-free lateral charge transfer mechanisms have shown great promise in photocatalysis. Polymeric graphitic carbon nitride (g-C3N4) is among the most promising candidates due to fine-tuned band edges and the feasibility of optimizing the optical properties via materials genomics. Constructing a two-dimensional (2D)/2D van der Waals (vdW) heterojunction by allies of 2D carbon nitride sheets and other 2D semiconductors has demonstrated enhanced charge separation with improved visible photon absorption, and the performance is not restricted by the lattice matching of constituting materials. With the advent of new 2D semiconductors over the recent past, the 2D/2D heterojunction assemblies are gaining momentum to design high performance photocatalysts for numerous applications. This review aims to highlight recent advancements and key understanding in carbon nitride based 2D/2D heterojunctions and their applications in photocatalysis, including small molecules activation, conversion, and degradations. We conclude with a forward-looking perspective discussing the key challenges and opportunity areas for future research.
Bicrystalline Titania Photocatalyst for Reduction of CO2 to Solar FuelsA'Lester Allen
Â
Degussa P25, a mixture of anatase and rutile crystal structures, is the most commonly used precursor to form the photoactive layer in solar cells; however, the photocatalytic activity of rutile is inferior to brookite. This presentation discusses the enhancement in photocatalytic activity of an antase brookite mixture.
Consistently High Voc Values in p-i-n Type Perovskite Solar Cells Using Ni3+-...Pawan Kumar
Â
Leading edge p-i-n type halide perovskite solar cells (PSCs) severely underperform n-i-p PSCs. p-i-n type PSCs that use PEDOT:PSS hole transport layers (HTLs) struggle to generate open-circuit photovoltage values higher than 1 V. NiO HTLs have shown greater promise in achieving high Voc values albeit inconsistently. In this report, a NiO nanomesh with Ni3+ defect grown by the hydrothermal method was used to obtain PSCs with Voc values that consistently exceeded 1.10 V (champion Voc = 1.14 V). A champion device photoconversion efficiency of 17.75% was observed. Density functional theory modeling was used to understand the interfacial properties of the NiO/perovskite interface. The PCE of PSCs constructed using the Ni3+-doped NiO nanomesh HTL was âź34% higher than that of conventional compact NiO-based perovskite solar cells. A suite of characterization techniques such as transmission electron microscopy, field emission scanning electron microscopy, intensity-modulated photocurrent spectroscopy, intensity-modulated photovoltage spectroscopy, time-resolved photoluminescence, steady-state photoluminescence, and Kelvin probe force microscopy provided evidence of better film quality, enhanced charge transfer, and suppressed charge recombination in PSCs based on hydrothermally grown NiO nanostructures.
Mixed-Valence Single-Atom Catalyst Derived from Functionalized GraphenePawan Kumar
Â
Single-atom catalysts (SACs) aim at bridging the gap between homogeneous and heterogeneous catalysis. The challenge is the development of materials with ligands enabling coordination of metal atoms in different valence states, and preventing leaching or nanoparticle formation. Graphene functionalized with nitrile groups (cyanographene) is herein employed for the robust coordination of Cu(II) ions, which are partially reduced to Cu(I) due to graphene-induced charge transfer. Inspired by nature's selection of Cu(I) in enzymes for oxygen activation, this 2D mixed-valence SAC performs flawlessly in two O2-mediated reactions: the oxidative coupling of amines and the oxidation of benzylic CH bonds toward high-value pharmaceutical synthons. High conversions (up to 98%), selectivities (up to 99%), and recyclability are attained with very low metal loadings in the reaction. The synergistic effect of Cu(II) and Cu(I) is the essential part in the reaction mechanism. The developed strategy opens the door to a broad portfolio of other SACs via their coordination to various functional groups of graphene, as demonstrated by successful entrapment of FeIII/FeII single atoms to carboxy-graphene.
Photocatalysis has now become an emerging scientific discipline due to its interdisciplinary nature. The wide range of research groups is now working on different aspects of photocatalysis worldwide. It is one of the technology the world looking forward to address environmental as well as energy related issues. Hence we can call it as a technology for the future or a dream technology! We need to overcome too many hurdles to implement this technology in real life. Like any other discipline there is a lot of misunderstanding/ misconceptions in photocatalysis.
Most frequently cited article in the field of photocatalysis is by Fujishima and Honda published in 1972 in nature and it has been cited by the photocatalytic community as an origin of photocatalysis. This aspect is not true at all. This article cannot be the origin of photocatalysis. This article only promoted photocatalytic studies. The author itself, actually, started a research career in the âboomâ of photocatalytic studies initiated by this article.
This small presentation aims to deliver some misconceptions like above in photocatalysis. The entire presentation is based on different personal commentaries written by Jean Mary Hermann and Bunsho Ohtani. Some recent articles relevant to the topic are collected by the speaker itself and put it in one platform.
Remarkable self-organization and unusual conductivity behavior in cellulose n...Pawan Kumar
Â
Aqueous suspensions of cellulose nanocrystals were blended with Poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) [PEDOT:PSS], and cast into thin films. The morphology, structure and electrical properties of the resulting nanocomposite thin films were thoroughly characterized. We found that the CNCâPEDOT:PSS blends self-organize into a layered vertical stack with a pitch of 100â200 nm while retaining a continuous percolation network for PEDOT. Atomic force microscopy, dynamic light scattering and multi-angle light scattering measurements confirmed the wrapping of polymer chains around the rod-like CNCs. The blended films exhibited improved molecular ordering of the PEDOT chains with concomitant improvement in the carrier mobility. The remarkable self-organization and enhanced structural order enabled the CNCâPEDOT:PSS blends to exhibit a high conductivity typical of PEDOT:PSS even when the content of the insulating CNCs in the nanocomposite was as high as 50 wt%.
Photo-assisted oxidation of thiols to disulfides using cobalt ââNanorustââ un...Pawan Kumar
Â
Heterogeneous ââNanorustââ containing cobalt oxide has been developed for the visible light assisted
oxidation of thiols to disulfides using molecular oxygen as an oxidant under alkaline free conditions and
therefore more environmentally friendly. Pyrolysis of heterogenized tetrasulfonated cobalt(II) phthalocyanine
(CoPcS) supported on mesoporous ceria (CeO2) transforms it into a novel heterogeneous ââNanorustââ
containing CoOx-C,N@CeO2 which exhibited higher catalytic activity than the homogeneous CoPcS as well
as the ceria immobilized CoPcS catalyst. Importantly, these catalysts could easily be recovered and recycled
for several runs, which makes the process greener and cost-effective.
Heterostructured nanocomposite tin phthalocyanine@mesoporous ceria (SnPc@CeO2...Pawan Kumar
Â
Heterostructured tin phthalocyanine supported to mesoporous ceria was synthesized and used a
photocatalyst for CO2 reduction under visible light. The photoreduction CO2 activities of the
heterostructures were investigated in the presence of triethylamine as sacrificial agent. The developed
photocatalyst exhibited high catalytic activity for photoreduction of CO2 and after 24 hours of visible
light irradiation 2342 mmol g1 cat of methanol (fMeOH Âź 0.0223 or 2.23%) and 840 mmol g1 cat of CO
(fCO Âź 0.0026 or 0.26%) were obtained as the major reaction products. The methanol formation rate
(RMeOH) and CO formation rate (RCO) was found to be 97.5 mmol h1 g1 cat and 35.0 mmol h1 g1 cat
respectively. While under the identical experimental conditions mesoporous ceria (meso-CeO2) gave
only 316 mmol g1 cat of methanol (fMeOH Âź 0.003 or 0.30%) and 126 mmol g1 cat CO (fCO Âź 0.0004
or 0.04%) with product formation rate RMeOH Âź 13.2 mmol h1 g1 cat and RCO Âź 5.3 mmol h1 g1 cat.
Furthermore, the recovered catalyst showed consistent catalytic activity for at least five runs without any
significant loss in product yields
Nanostructured composite materials for CO2 activationPawan Kumar
Â
The increasing energy crisis and the worsening global climate caused by the excessive
utilization of the fossil fuel have boosted tremendous research about CO2 capture, storage and
utilization. Among these approaches, utilization of carbon dioxide to produce valuable chemicals
is preferred than dumping it. Particularly, utilization of CO2 as feedstock for the photocatalytic
conversion into valuable products is a viable approach for harvesting solar radiation as an energy
source and to mitigate increasing CO2 concentration. Artificial photosynthesis by using
nanostructured materials as photocatalyst has immense potential to convert carbon dioxide into
renewable fuels such as methanol/CO etc. The present chapter focuses on the synthesis, characterization and application of various nanostructured materials for CO2 activation including
photoreduction of CO2 to valuable products.
Synthesis of flower-like magnetite nanoassembly: Application in the efficient...Pawan Kumar
Â
A facile approach for the synthesis of magnetite microspheres with flower-like morphology is reported
that proceeds via the reduction of iron(III) oxide under a hydrogen atmosphere. The ensuing magnetic
catalyst is well characterized by XRD, FE-SEM, TEM, N2 adsorption-desorption isotherm, and
MĂśssbauer spectroscopy and explored for a simple yet efficient transfer hydrogenation reduction of a
variety of nitroarenes to respective anilines in good to excellent yields (up to 98%) employing hydrazine
hydrate. The catalyst could be easily separated at the end of a reaction using an external magnet and
can be recycled up to 10 times without any loss in catalytic activity.
Polymeric carbon nitride-based photocatalysts for photoreforming of biomass d...Pawan Kumar
Â
Photoreforming of biomass to value-added chemicals and fuels is a chemical approach to extract photosynthetically-trapped energy in complex biomolecules which otherwise disintegrate naturally in the environment. Designing precise photocatalytic materials that can selectively break the sturdy, nature-designed biomass with multiplex chemical composition/bonding and inaccessible sites is central to deploying this technology. Polymeric carbon nitride (CN) comprised of a 2D network of condensed heptazine/triazine (C6N7/C3N3) core has shown great promise for photoreforming of biomass derivatives due to intriguing physicochemical and optical properties. This review comprehensively summarizes the state-of-the-art applications of CN-based photocatalysts for the conversion of lignocellulosic biomass derivatives. Various chemical and structural modifications in CN structure such as doping, surface functionalization, hybridization entailing to higher selectivity and conversion have been discussed aiming at providing valuable guidance for future CN-based materials design.
Water-splitting photoelectrodes consisting of heterojunctions of carbon nitri...Pawan Kumar
Â
Quinary and senary non-stoichiometric double perovskites such as Ba2Ca0.66Nb1.34âxFexO6âδ (BCNF) have been utilized for gas sensing, solid oxide fuel cells and thermochemical CO2 reduction. Herein, we examined their potential as narrow bandgap semiconductors for use in solar energy harvesting. A cobalt co-doped BCNF, Ba2Ca0.66Nb0.68Fe0.33Co0.33O6âδ (BCNFCo), exhibited an optical absorption edge at âź800 nm, p-type conduction and a distinct photoresponse up to 640 nm while demonstrating high thermochemical stability. A nanocomposite of BCNFCo and g-C3N4 (CN) was prepared via a facile solvent-assisted exfoliation/blending approach using dichlorobenzene and glycerol at a moderate temperature. The exfoliation of g-C3N4 followed by wrapping on perovskite established an effective heterojunction between the materials for charge separation. The conjugated 2D sheets of CN enabled better charge migration resulting in increased photoelectrochemical performance. A blend composed of 40 wt% perovskites and CN performed optimally, whilst achieving a photocurrent density as high as 1.5 mA cmâ2 for sunlight-driven water-splitting with a Faradaic efficiency as high as âź88%.
Hot hole transfer from Ag nanoparticles to multiferroic YMn2O5 nanowires enab...Pawan Kumar
Â
Plasmonic hot carriers with a nonthermal distribution of kinetic energies have opened up new avenues in photovoltaics, photodetection and photocatalysis. While several articles have reported ultrafast hot electron injection from coinage metals into n-type semiconductors across Schottky barriers and efficient subsequent utilization of injected hot electrons, reports of hot hole harvesting are comparatively rare due to the difficulty in forming Schottky junctions between p-type semiconductors and high work function metals. In this communication, we report the fabrication, characterization and theoretical calculations of a novel integrated multiferroic-plasmonic system comprising YMn2O5 nanowires decorated on their surface with Ag nanoparticles (NPs). A Schottky barrier for holes exists at the YMn2O5-Ag hetero-interface and hot holes were injected from Ag across this barrier. The synthesized hybrid along with bare Ag NPs were tested for Raman surface photocatalytic reduction of 4-NBT (4-nitrobenzenethiol) to DMAB (p, pâ˛-dimercaptoazobenzene) where the composite demonstrated superior activity compared to the bare metal. Ultraviolet photoelectron spectroscopy (UPS) revealed a significantly reduced work function of the composite compared to the pristine Ag, indicative of more energetic hot electrons on the surface of the composite required for efficient photoreduction. Density functional theory (DFT)-based calculations revealed localization of molecular orbitals supportive of a possible hole transfer from YMn2O5 to Ag and a reorganization of electronic states beneficial for plasmon-induced charge carrier enhancement. DFT results also indicated a purely electronic contribution to the ferroelectric polarization of YMn2O5 over and above the ionic contribution, which originated from the magnetic polarization of O 2p states.
Boosting Photocatalytic Activity Using Carbon Nitride Based 2D/2D van der Waa...Pawan Kumar
Â
The surging demand for energy and staggering pollutants in the environment have geared the scientific community to explore sustainable pathways that are economically feasible and environmentally compelling. In this context, harnessing solar energy using semiconductor materials to generate charge pairs to drive photoredox reactions has been envisioned as a futuristic approach. Numerous inorganic crystals with promising nanoregime properties investigated in the past decade have yet to demonstrate practical application due to limited photon absorption and sluggish charge separation kinetics. Two-dimensional semiconductors with tunable optical and electronic properties and quasi-resistance-free lateral charge transfer mechanisms have shown great promise in photocatalysis. Polymeric graphitic carbon nitride (g-C3N4) is among the most promising candidates due to fine-tuned band edges and the feasibility of optimizing the optical properties via materials genomics. Constructing a two-dimensional (2D)/2D van der Waals (vdW) heterojunction by allies of 2D carbon nitride sheets and other 2D semiconductors has demonstrated enhanced charge separation with improved visible photon absorption, and the performance is not restricted by the lattice matching of constituting materials. With the advent of new 2D semiconductors over the recent past, the 2D/2D heterojunction assemblies are gaining momentum to design high performance photocatalysts for numerous applications. This review aims to highlight recent advancements and key understanding in carbon nitride based 2D/2D heterojunctions and their applications in photocatalysis, including small molecules activation, conversion, and degradations. We conclude with a forward-looking perspective discussing the key challenges and opportunity areas for future research.
Bicrystalline Titania Photocatalyst for Reduction of CO2 to Solar FuelsA'Lester Allen
Â
Degussa P25, a mixture of anatase and rutile crystal structures, is the most commonly used precursor to form the photoactive layer in solar cells; however, the photocatalytic activity of rutile is inferior to brookite. This presentation discusses the enhancement in photocatalytic activity of an antase brookite mixture.
Consistently High Voc Values in p-i-n Type Perovskite Solar Cells Using Ni3+-...Pawan Kumar
Â
Leading edge p-i-n type halide perovskite solar cells (PSCs) severely underperform n-i-p PSCs. p-i-n type PSCs that use PEDOT:PSS hole transport layers (HTLs) struggle to generate open-circuit photovoltage values higher than 1 V. NiO HTLs have shown greater promise in achieving high Voc values albeit inconsistently. In this report, a NiO nanomesh with Ni3+ defect grown by the hydrothermal method was used to obtain PSCs with Voc values that consistently exceeded 1.10 V (champion Voc = 1.14 V). A champion device photoconversion efficiency of 17.75% was observed. Density functional theory modeling was used to understand the interfacial properties of the NiO/perovskite interface. The PCE of PSCs constructed using the Ni3+-doped NiO nanomesh HTL was âź34% higher than that of conventional compact NiO-based perovskite solar cells. A suite of characterization techniques such as transmission electron microscopy, field emission scanning electron microscopy, intensity-modulated photocurrent spectroscopy, intensity-modulated photovoltage spectroscopy, time-resolved photoluminescence, steady-state photoluminescence, and Kelvin probe force microscopy provided evidence of better film quality, enhanced charge transfer, and suppressed charge recombination in PSCs based on hydrothermally grown NiO nanostructures.
Mixed-Valence Single-Atom Catalyst Derived from Functionalized GraphenePawan Kumar
Â
Single-atom catalysts (SACs) aim at bridging the gap between homogeneous and heterogeneous catalysis. The challenge is the development of materials with ligands enabling coordination of metal atoms in different valence states, and preventing leaching or nanoparticle formation. Graphene functionalized with nitrile groups (cyanographene) is herein employed for the robust coordination of Cu(II) ions, which are partially reduced to Cu(I) due to graphene-induced charge transfer. Inspired by nature's selection of Cu(I) in enzymes for oxygen activation, this 2D mixed-valence SAC performs flawlessly in two O2-mediated reactions: the oxidative coupling of amines and the oxidation of benzylic CH bonds toward high-value pharmaceutical synthons. High conversions (up to 98%), selectivities (up to 99%), and recyclability are attained with very low metal loadings in the reaction. The synergistic effect of Cu(II) and Cu(I) is the essential part in the reaction mechanism. The developed strategy opens the door to a broad portfolio of other SACs via their coordination to various functional groups of graphene, as demonstrated by successful entrapment of FeIII/FeII single atoms to carboxy-graphene.
Photocatalysis has now become an emerging scientific discipline due to its interdisciplinary nature. The wide range of research groups is now working on different aspects of photocatalysis worldwide. It is one of the technology the world looking forward to address environmental as well as energy related issues. Hence we can call it as a technology for the future or a dream technology! We need to overcome too many hurdles to implement this technology in real life. Like any other discipline there is a lot of misunderstanding/ misconceptions in photocatalysis.
Most frequently cited article in the field of photocatalysis is by Fujishima and Honda published in 1972 in nature and it has been cited by the photocatalytic community as an origin of photocatalysis. This aspect is not true at all. This article cannot be the origin of photocatalysis. This article only promoted photocatalytic studies. The author itself, actually, started a research career in the âboomâ of photocatalytic studies initiated by this article.
This small presentation aims to deliver some misconceptions like above in photocatalysis. The entire presentation is based on different personal commentaries written by Jean Mary Hermann and Bunsho Ohtani. Some recent articles relevant to the topic are collected by the speaker itself and put it in one platform.
Remarkable self-organization and unusual conductivity behavior in cellulose n...Pawan Kumar
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Aqueous suspensions of cellulose nanocrystals were blended with Poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) [PEDOT:PSS], and cast into thin films. The morphology, structure and electrical properties of the resulting nanocomposite thin films were thoroughly characterized. We found that the CNCâPEDOT:PSS blends self-organize into a layered vertical stack with a pitch of 100â200 nm while retaining a continuous percolation network for PEDOT. Atomic force microscopy, dynamic light scattering and multi-angle light scattering measurements confirmed the wrapping of polymer chains around the rod-like CNCs. The blended films exhibited improved molecular ordering of the PEDOT chains with concomitant improvement in the carrier mobility. The remarkable self-organization and enhanced structural order enabled the CNCâPEDOT:PSS blends to exhibit a high conductivity typical of PEDOT:PSS even when the content of the insulating CNCs in the nanocomposite was as high as 50 wt%.
1. 1
ELENA A. GULIANTS, Ph.D.
3581 Shadetree Drive
Beavercreek, OH 45431
(937) 620-8020
e-mail: eguliants1@udayton.edu
SEEKING A RESEARCH / PROGRAM MANAGEMENT POSITION IN:
Renewable and Alternative Energy:
ďˇ Novel photovoltaic concepts, hybrid and nanostructured solar systems on the verge of
electronics and materials science
ďˇ High energy contect nanocomposites and propellants
ďˇ Novel nanosctructured assemblies as functional nanomaterials scaffolds for energy
generation and storage
EDUCATION
2013 M.B.A., University of Dayton, Dayton, OH
2000 Ph.D. in Electrical Engineering, State University of New York at Buffalo, NY (with highest honor)
Dissertation âPolycrystalline Silicon Thin Films by Metal-Induced Growth: Formation
Mechanisms, Characterization and Applicationsâ, advisor Prof. W.A. Anderson
1993 M.S. in Electronic Materials, Moscow Technical University (Moscow Power Engineering
Institute), Russia (with highest honor)
Thesis âEffect of Hydrogenation on Amorphous Silicon Thin Filmsâ Properties in Solar Cellsâ,
advisor Prof. V.A. Filikov
1991 B.S. in Electronic Materials, Moscow Technical University (Moscow Power Engineering
Institute), Russia (with highest honor)
LANGUAGE: fluent in English and Russian
PROFESSIONAL EXPERIENCE
RESEARCH
1993-
2016
23 years of expertise in the field of Renewable Energy:
ďˇ Advanced nanostructured and hybrid photovoltaics (funding, awards, publications, US
Department Of Energy panel reviewer / expert)
ďˇ Nanostrutured lectronics and Sensors (NSF, NASA, MDA, AFOSR. AFRL, over 30
publications and presentations)
ďˇ Nanostructured materials in hydrogen generation (over 10 publications and
presentations, patent)
ďˇ Nanoenergetics: high energy release metallic nanoparticles ($ 11 M total funding from
AFRL and DTRA, over 40 publications and presentations)
ďˇ Carbon dot catalysts for CO2 reduction and energy conversion (funding, publications)
2. 2
2003-
present
2005-14
Senior Research Engineer
University of Dayton Research Institute, Dayton, OH
Group Leader, Nanochemistry and Nanoengineering Group, UDRI
ď§ Was responsible for managing 8-10 -person team of engineers, scientists, technicians, post-
docs, and graduate students co-located at Wright Patterson AFB and University of Dayton
campus
ď§ Provided technical oversight and planning, including budgeting, proposal writing,
publications, invited seminars, interfacing with DoD, DoE, and other government agencies
and industrial customers, etc.
ď§ Was a lead (PI) on the following research projects:
ď§ Metallic nanoparticle-functionalized 1-D graphene and graphene oxide films for
antimicrobial, catalytic , nanoelectronic, and nanoenergetic applications
ď§ II-VI semiconductor nanoparticle-based thin-film opto-chemical sensors
ď§ Metallic core-shell nanoparticle-based thin-film electro-chemical sensors
ď§ Protein- and DNA-coated magnetic iron oxide nanoparticles for bio-sensing thin-film
layers and drug delivery
ď§ Novel nanostructured energetic materials for propulsion
ď§ Nanomaterials for hydrogen generation as novel green energy effort (patent)
ď§ Nanoadditives for fuel deoxygenation
ď§ 4H- and 3C- SiC epitaxial films for high power BJT, IGBT, and MOSFET-based
electronics
ď§ Novel photovoltaic materials and systems
ď§ Was a lead proposer and contractor to AFRL on a 6-year (2008-2014) Nanoenergetic
Initiative
2000-03 Research Scientist
Taitech, Inc., Wright-Patterson Air Force Base, OH
ď§ Conducted and managed (PI) hands-on research in the following areas:
ď§ Fabrication of functional semiconductor nanostructures on the sub â30nm scale via 2-D
thin-film molecularly self-assembled porous templates
ď§ Bandgap engineering on the nanoscale for tuning the opto-electronic properties of wide
bandgap (SiC) semiconductor thin films
ď§ Multi-layered, multifunctional sensing/protective spacecraft coatings via nanostructuring
of inorganic materials in a 2-D controlled porosity thin film medium
ď§ Optically stimulated SiC/Si high power transistor switch for the aircraft engine actuation
control (AFRLâs Fly-by-Light Initiative)
ď§ Thin-film amorphous and nanostructured Si-based photovoltaic cells on flexible
substrates for the use in deployable space structures (with Thiokol Propulsion)
1997-00 Research Assistant, PhD program
Department of Electrical Engineering, SUNY Buffalo, NY
ď§ Planned and conducted research studies on the following topics as part of my dissertation
titled âPolycrystalline Thin Films by Si Heteroepitaxy on Ni Silicides: Growth,
Characterization, and Applicationsâ:
ď§ Self-assembly of Si nanostructures by heteroepitaxy on silicides
ď§ Liquid Phase Growth and Metal Induced Growth of polycrystalline silicon by DC
Magnetron Sputtering
ď§ Thin film Schottky and p-n junction diodes, thin film transistors, solar cells, and
photodetectors (featured in Cambridge, UK article, 2002)
ď§ Computer simulation and modeling of microelectronic devices
ď§ Si heteroepitaxy on lattice-matched YSZ and CeO2 substrates
ď§ Ni â P thin-film resistor fabrication by electroless plating
3. 3
ď§ SnO2 thin-film resistor deposition by RF Magnetron Sputtering; characterized electrical
performance and stability
ď§ SiC surface coating by RF and DC magnetron sputtering
ď§ Extensive chemical, structural, morphological, electrical, and optical characterization of
semiconductor materials and devices
ď§ Designed and constructed âfrom scratchâ a Micro-Electron Cyclotron Chemical Vapor
Deposition (MECR-CVD) system for a-Si â based PV applications (featured in National
Renewable Energy Laboratory (NREL), DoE article, 2000)
1996-97 Electronics Engineer
Trialink Corporation, Authorized Motorola Distributor, Moscow, Russia
ď§ Custom-designed small (under 1km radius) telecomm radio systems and programmed
microprocessors for wireless communication devices (Motorola, Nokia)
1993-96 Graduate Research Assistant
Semiconductor Electronics Laboratory, Department of Electromechanical Engineering,
MPEI, Russia.
ď§ Planned and conducted research studies on the following topics:
ď§ Effect of Chemical Vapor and Physical Vapor Deposition conditions on opto-electronic
properties of amorphous silicon films
ď§ Design and optimization of thin film a-Si:H solar cells
ď§ Conduction mechanisms in a-Si:H p-n junction and Schottky solar cells
ď§ Hydrogenation techniques for amorphous Si and SiC thin films
TEACHING
2004-
present
(2004-2010) Assistant Professor, (2010-current) Associate Professor
Electrical and Computer Engineering Dept., University of Dayton, Dayton, OH (joint
appointment with UD Research Institute)
ď§ ECE 583 Advanced Photovoltaics, 2011- current (a new graduate course developed by
E.A. Guliants)
ď§ ECE 581 Introduction to Nanoelectronics, 2004- current (a new graduate course
developed by E.A. Guliants)
ď§ ECE 316 Smart-Grid Electric Energy Systems, 2012 (a team-developed undergraduate
course)
ď§ ECE 595 Thin Film Engineering, 2011-2012 (a team-developed graduate course)
ď§ ECE 204 & ECE 204L Electronic Devices, 2004 - current
ď§ EGR 203 Electrical and Electronic Circuits, 2014 - current
4. 4
AWARDS, SYNERGISTIC AND OUTREACH ACTIVITIES
ď§ IEEE Dayton Section Noble award for achievements in Electronic Devices, 2011
ď§ IEEE Miami Valley Graduate Activities Chair
ď§ NSF Review Panel, CBET Bio-Sensing, 2010
ď§ DOE Review Panel, Next Generation Photovoltaics, 2011
ď§ DOE Review Panel, Solar Energy Technologies Program (SETP), 2012
ď§ Organizer and Chair, Session on Functional Magnetic Nanomaterials for the International TMS
conference in Orlando, FL, Feb. 2007
ď§ Organizer and Technical Committee member, International Workshop on Integrated Power Packaging
(IWIPP) May 3-6, 2015 Chicago, IL
ď§ Reviewer for Journal of Applied Physics, Nanotechnology, Electron Device Letters, Physics Letters A,
Journal of Physical Chemistry, Physical Review C/X, Physical Review Letters, Thin Solid Films,
Chemical Physics Letters, and other numerous journals and professional organizationsâ Symposium
Proceedings
ď§ Member (present and past):
ď§ Institute of Electrical and Electronic Engineers (IEEE)
ď§ Materials Research Society (MRS)
ď§ Electrochemical Society (ECS)
ď§ American Chemical Society (ACS)
ď§ American Institute of Physics (AIP) Society
ď§ The Minerals, Metals & Materials Society (TMS)
ď§ The American Physical Society (APS)
ď§ Active Member of Women in Engineering Programs and Advocates Network (WEPAN)
ď§ Active STEM member, Invited speaker in a series of science and engineering outreach and industrial
programs, including:
ď§ Keynote Speaker, âNanotechnology Perspectivesâ at the âIgnite Innovation in Businessâ Spotlight
on Advanced Research and Scholarship, Schuster Center, Dayton, OH, November 2010
ď§ Opening Keynote Speaker, âNovel Sensing Approaches Using Functional Hybrid Nanoparticlesâ,
at the Ohio Nanotechnology Summit, Cincinnati, OH, April 2008
ď§ Invited talk âNanoscale Energetic Materialsâ, at the Spotlight on Science, March 2010 (KU, UD)
ď§ Ohio Chapter of First Lego League (FLL) NanoQuest (WSU)
ď§ Nanoseries for Dayton high school science teachers (Sinclair)
ď§ âNanoscience for Kidsâ program (Boonshoft Museum of Discovery), and others
ď§ IEEE Miami Valley Graduate Activities Chair
5. 5
RESEARCH FUNDING AWARDS
ď§ A Novel Ultra-High Resolution Technique for the Fabrication of Nanoelectronic Device Arrays (Contract
0109745, NSF, 2001). $99,804.00. PI â E.A. Guliants.
ď§ Band Gap Engineering of Advanced Photodetectors via Quantum Size Effects in SiC Nanostructures
(Contract DAAB07-01-C0L861, BMDO, 2001). $64,958.00. PI â E.A. Guliants.
ď§ Multifunctional Spacecraft Coatings via Nanostructuring of Advanced Materials in Controlled Porosity
Medium (Contract NAS1-0242, NASA, 2001). $99,210.00. PI â E.A. Guliants
ď§ Development of a Light-Activated High Power SiC Phototransistor for Flight Control Applications (AFRL,
extension to Contract F33615-00-C-2007, $50,000.00, and BMDO, $748,976.00, 2000-2003).. PI â
E.A. Guliants.
ď§ Development of Nanoparticulate Fuel Additives (AFRL/RQTF, 2008 â current) $400,000/year. PI â E.A.
Guliants
ď§ Development of Nanoparticle-Based Thin-Films and MEMS Devices for Optochemical Sensors
Applications (Propulsion Directorate, AFRL, 2008 â 2012) $200,000. PI â E.A. Guliants.
ď§ Secure Control Circuit Board Materials and Processes, classified (Materials Directorate, AFRL, Jan.
2004 â Dec. 2007) $150,000. PI â E.A. Guliants.
ď§ Nanocrystalline Silicon by ECR-CVD for Thin-Film Transistors and Photovoltaic Applications
(subcontract to SUNY Buffalo, NSF, 2004) PI â W.A. Anderson, Co-PI â E.A. Guliants.
ď§ Ultra-Fine Highly Energetic Core-Shell Nanoparticles with Triggerable Protective Coatings (Grant #
HDTRA-07-1-0026, Defense Threat Reduction Agency/Dept. of Homeland Security, 2007-2010)
$450,000. PI â E.A. Guliants.
ď§ Nanoenergetics Initiative (AFRL, $800,000/year, 2008-2014). PI â E.A. Guliants
ď§ Development of 2-D Graphene Oxide (GO)- based Antibacterial Fuel Filters (AFRL/RQTF, Propulsion
Directorate, 2013 â current) $150,000/year. PI â E.A. Guliants.
ď§ Development of Al/Mg/Si Nanoparticleâ based Novel Energetic Compounds and Formulations
(AFOSR/RQTF, 20011 â current) $200,000/year. PI â E.A. Guliants.
ď§ Novel Gate Materials for High Power Electronic Applications (AFRL/RQQE, Jan 2015 â current)
$20,000. PI â E.A. Guliants
ď§ LADAR Opto-Electronic Conrol and Communications Technologies (AFRL/RQQE, Jan 2016 â current)
$40,000. PI â E.A. Guliants
Several proposals are in preparation or submitted
6. 6
LIST OF REFEREED JOURNAL PUBLICATIONS
1. E.A. Guliants, E. Gaugler, X. Wang, V. Watson, E. Shin, and K.A.S. Fernando, âTuning Conductivity
of Graphene Oxide by Ag Nanoparticle Functionalization/Decorationâ, to be submitted to JAP (in
preparation).
2. M.J. Meziani, K.A.S. Fernando, E.A. Guliants, C.E. Bunker, and Y.-P. Sun, âVisible-Light
Photoconversion of Carbon Dioxide into Organic Acids - A Pressure Dependence Study in
Aqueous Solution of Carbon Dotsâ, Nanoscale (2015, submitted).
3. W. K. Lewis, B. A. Miller, K. A. S. Fernando, N. D. McNamara, E. A. Guliants, and C. E. Bunker,
âThermal Behavior of Graphene Oxide-Aluminum Nanoparticle Mixtures: Catalytic Effects of
Aluminum and Aluminaâ, J. Phys. Chem.C (2015, submitted).
4. W.K. Lewis, C.E. Bunker, E.A. Guliants, and D.K. Phelps, âFourier Transform Infrared (FTIR) and Ab
Initio Investigation of Core-Shell Bonding in Aluminum and Iron Nanoparticles Capped with Oleic
Acidâ, J. Chem. Physics (2014, submitted).
5. K. A. S. Fernando, W. L. Lewis, N. D. McNamara, B.A. Haruff, E.A. Guliants, C.E. Bunker,
âChemical and Reactivity Changes of Al Core-Shell Nanoparticles by Addition of Small Amount of
Iron Pentacarbonyl to the Sonochemically Assisted Thermal Decomposition of Alane N, N-
Dimethylethylamineâ ACS Appl. Mater. Interfaces (2015, submitted).
6. M. J. Smith, K. A. S. Fernando, N. D. McNamara, B.A. Harruff, W. L. Lewis, E.A. Guliants, C. E.
Bunker, âRole of Capping Agents to Air Stable Aluminum Nanoparticlesâ J. Phy. Chem.C (2015,
submitted).
7. K.A.S. Fernando, S. Sahu, Y. Liu, C.E. Bunker, W.K. Lewis, E.A. Guliants, and Y.-P. Sun, "Carbon
Quantum Dots and Applications in Photocatalytic Energy Conversion", ACS Applied Materials
& Interfaces, ACS Applied Materials & Interfaces 7 (1) 6 April 29, 8363 (2015)
8. S. Sahu, Y. Liu, P. Wang, C.E. Bunker, K. A.S. Fernando, W.K. Lewis, E.A. Guliants, Y. Fan, W.
Jinping, Y.-P. Sun, âVisible-Light Photoconversion of Carbon Dioxide into Organic Acids in
Aqueous Solution of Carbon Dotsâ, Langmuir 30 (28), 8631 (2014).
9. P.A. Jelliss, S.W. Buckner, S.W. Chung, A. Patel, E.A. Guliants, C.E. Bunker, âThe Use of 1,2-
Epoxyhexane as a Passivating Agent for Core-Shell Aluminum Nanoparticles with Very High Active
Aluminum Content, Solid State Sciences 23, 8 (2013).
10. W.K. Lewis, C.G. Rumchik, M.J. Smith, K.A.S.Fernando, C.A. Crouse, J.E. Spotwart, E.A. Guliants,
C.E. Bunker, âComparison of Post-Detonation Combustion in Explosives Incorporating Aluminum
Nanoparticles: Influence of the Passivating Layerâ, J. Appl. Phys. 113, 044907 (2013).
11. B.J. Thomas, C.E. Bunker, E.A. Guliants, S.E. Hayes, A. Kheyfets, K.M. Wentz, S.W. Buckner, P.A.
Jelliss, âSynthesis of Aluminum Nanoparticles Capped with Copolymerizable Epoxides âJournal of
Nanoparticle Research 15(6) 1 (2013).
12. W.K. Lewis, B.A. Miller, M.A. Gord, J.R. Gord, E.A. Guliants, and C.E. Bunker, âA Threshold-Based
Approach to Calorimetry in Helium Droplets: Measurement of Binding Energies of Water Clustersâ,
Rev. Sci. Instrum. 83, 073109 (2012).
13. W. K. Lewis, B. A. Harruff, J. R. Gord, A. T. Rosenberger, T. M. Sexton, E. A. Guliants, and C. E.
Bunker, âChemical Dynamics of Aluminum Nanoparticles in Ammonium Nitrate and Ammonium
Perchlorate Matrices: Enhanced Reactivity of Organically Capped Aluminum,â J. Phys. Chem. C,
115, 70-77 (2011).
14. L. Cao, S. Sahu, S. P. Anilkumar, C.E. Bunker, J. Xu, K. A. S. Fernando, P. Wang, E.A.
Guliants, K.N. Tackett, Y.-P. Sun, âCarbon Nanoparticles as Visible-Light Photocatalysts
for Efficient CO2 conversion and Beyondâ J. Am. Chem. Soc. 133, 4754 (2011) â most cited
articles in ACS Publications 2011.
15. S.W. Chung, E.A. Guliants, C.E. Bunker, P.A. Jelliss, S.W. Buckner, âSize-dependent Nanoparticle
Reaction Enthalpy: Oxidation of Aluminum Nanoparticlesâ, Journal of Physics and Chemistry of
Solids 72 719â724 (2011).
7. 7
16. D. W. Hammerstroem, M.A. Burgers, S.W. Chung, E.A. Guliants, C.E. Bunker, K.M. Wentz, S.E.
Hayes, S.W. Buckner, P.A. Jelliss, âAluminum Nanoparticles Capped by Polymerization of Alkyl-
Substituted Epoxides: Ratio-Dependent Stability and Particle Sizeâ, Inorganic Chemistry 50(11),
5054 (2011).
17. J. Xu, S. Sahu, L. Cao, P. Anilkumar, K.N. Tackett, H. Qian, C.E. Bunker, E.A. Guliants, A.
Parenzan, Y.-P. Sun, âCarbon Nanoparticles as Chromophores for Photon Harvesting and
Photoconversionâ, Chem Phys Chem 12(18), 3604 (2011).
18. M. Ahoujja, P. Shah, A. Sarangan, S. Elhamri, E.A. Guliants, âAnisotropic Electrical Properties of
Nanostructured Metallic Thin Filmsâ, American Physical Society Proceedings, 56 (1), (2011).
19. J. Xu, S. Sahu, L. Cao, C.E. Bunker, G. Peng, Y. Liu, K.A.S. Fernando; P. Wang, E.A. Guliants,
M.J. Meziani, H. Qian, Y.-P. Sun, âEfficient Fluorescence Quenching in Carbon Dots by Surface-
Doped Metals - Disruption of Excited State Redox Processes and Mechanistic Implications. â
Langmuir 28 (46), 16141 (2012).
20. X. Wang, L. Cao, C.E. Bunker, M.J. Meziani, F. Lu, E.A. Guliants, and Y.-P. Sun, âFluorescence
Decoration of Defects in Carbon Nanotubesâ, J. Phys. Chem. C 114 (49), 20941â20946 (2010).
21. W. K. Lewis, A. Rosenberger, J. R. Gord, C. A. Crouse, B. A. Haruff, K. A. S. Fernando, M. J. Smith,
D. K. Phelps, J. E. Spowart, E. A. Guliants, C. E. Bunker, âMultispectroscopic (FTIR, XPS, and
TOFMS-TPD) Investigation of the Core-Shell Bonding in Sonochemically-Prepared Aluminum
Nanoparticles Capped with Oleic Acidâ J. Phys. Chem. C 114, 6377 (2010).
22. S.W. Chung, E.A. Guliants, C.E. Bunker, P.A. Jelliss, S.W. Buckner, âSize-Dependent Al
Nanoparticle Oxidation Enthalpyâ, Prepr. Pap.-Am. Chem. Soc., Div. Fuel Chem., 55 (1), 24 (2010).
23. M.A. Burgers, C.D. Oberle, S.W. Chung, E.A. Guliants, V. Kalugotla, C.E. Bunker, D.W.
Hammerstroem, P.A. Jelliss, S.W. Buckner, âLong-Term Air Stability of Organically-Capped
Aluminum Nanoparticlesâ; Prepr. Pap.-Am. Chem. Soc., Div. Fuel Chem. 55 (1), (2010)
24. H. Li, M.J. Meziani, A. Kitaygorodskiy, F. Lu, C.E. Bunker, K.A.S. Fernando, E.A. Guliants, Y.-P.
Sun, âPreparation and Characterization of Alane Complexes for Ebergy Applicationsâ, J. Phys.
Chem. C, 114, 3318 (2010).
25. C.E. Bunker, M.J. Smith, K.A.S. Fernando, B.A.Harruff, W.K. Lewis, J.R. Gord, E.A. Guliants, and
D.K. Phelps, âSpontaneous Hydrogen Generation from Organic-Capped Al Nanoparticles and
Water,â ACS Appl. Mater. Interfaces, 2, 11-14 (2010).
26. H. Li, M.J. Meziani, F. Lu, C.E. Bunker, E.A. Guliants, Y.-P. Sun, âTemplated Synthesis of Aluminum
Nanoparticles â A New Route to Stable Energetic Materialsâ, J Phys. Chem. C, 113, 20539 (2009).
27. S.W. Chung, E.A. Guliants, C.E. Bunker, D.W. Hammerstroem, Y. Deng, M.A. Burgers, P.A. Jelliss,
S.W. Buckner, âCapping and Passivation of Aluminum Nanopartiles Using Alkyl-Substituted
Epoxidesâ, Langmuir, 25, 8883 (2009).
28. M.J. Meziani, C.E. Bunker, F. Lu, H. Li, W. Wang, E.A. Guliants, R.A. Quinn, Y.-P. Sun,âFormation
and Properties of Stabilized Aluminum Nanoparticlesâ, ACS Appl. Mater. Interf. 1, 703 (2009). â
most cited articles in ACS Publications 2009.
29. K.A. S. Fernando, M.J. Smith, B.A. Harruff, W.K. Lewis, E.A. Guliants, and C.E. Bunker,
âSonochemically-Assisted Thermal Decomposition of Alane N,N-Dimethylelthylamine with Titanium
(iv) Isopropoxide in the Presence of Oleic Acid to Yield Air Stable and Size Selective Aluminum
Core-Shell Nanoparticlesâ, Journal of Physical Chemistry C 113, 500 (2009).
30. A.B. Morgan, D.J. Wolf, E.A. Guliants, K.A. Shiral Fernando, W.K. Lewis, C.E. Bunker, âHeat
Release Measurements on Micron and Nanoscale Aluminum Powdersâ, Thermochimica Acta,
488, 1 (2009).
31. M. Germain, P. Fraundorf, S. Lin, E.A. Guliants, C.E. Bunker, and S. Buckner, âSynthesis and
Characterization of Srilankite Nanowiresâ, Journal of Nanoscience and Nanotechnology 8(3), 1481
(2008).
32. C.E. Bunker, K.C. Novak, E.A. Guliants, B.A. Harruff, M.J. Meziani, Y. Lin, Y.-P. Sun, âFormation of
Protein-Metal Oxide Nanostructures by the Sonochemical Method: Observation of Nanofibers and
Nanoneedlesâ, Langmuir 23, 10342 (2007).
8. 8
33. E. A. Guliants, R. Schwarb, H. Bearbower, C.E. Bunker, and J.R. Gord, âFunctional Nanoparticles in
Thin Films as Sensing Mediaâ, Reviews on Advanced Materials Science 4, 289 (2005).
34. E.A. Guliants, K.C. Novak, R.E. Schwarb, M.M. Stachler, B.A. Harruff, âTuning Properties of
Functional Iron Nanoparticles in Sonochemistryâ, J. Electron. Mat., submitted (2005).
35. E.A. Guliants, K.C. Novak, and C.E. Bunker, "The Effect of Thin Film Environment on Luminescent
Properties of CdS Nanoparticles", NanoLetters 5 (11), (2005).
36. J. Kim, W.A. Anderson, C.E. Bunker, and E.A. Guliants, âMorphological Changes During the Growth
of Nickel Monosilicide Nanowiresâ, in Stability of Thin Films and Nanostructures, MRS Proceedings
854E, U 5.10 (2005).
37. E.A. Guliants, B.A. Haruff, J.R. Gord, and C.E. Bunker, âPhotophysical Properties of CdS
Nanoparticles in Thin Films for Opto-Chemical Sensingâ, in Nanoengineered Assemblies and
Advanced Micro/ Nanosystems, MRS Proceedings 820, 69 (2004).
38. C.E. Bunker, Christopher E.; J.J. Karnes, E.A. Guliants, J.R. Gord, D.K. Phelps, âDevelopment of
sensors and sensor technologies for jet fuel analysisâ, Preprints - American Chemical Society,
Division of Petroleum Chemistry 49 (4) 470 (2004).
39. E.A. Guliants, C. Ji, and W.A. Anderson, "The Role of Nucleation and Heteroepitaxial Processes in
Nanostructuring of Si", Journal of Electronic Materials 31, 466 (2002).
40. E.A. Guliants, C. Ji, and W.A. Anderson, âSelf-Assembly of Spatially Separated Si Structures By Si
Heteroepitaxy on Ni Disilicideâ, Journal of Applied Physics 91, 6077 (2002).
41. has been selected best paper for the Virtual Journal of Nanoscale Science & Technology 5(17)
(2002).
42. E.A. Guliants, D.C. Abeysinghe, M.A. Carreon, V.V. Guliants, C. Ji, and W.A. Anderson, âQuantum
Size Effect Silicon Structures via Molecularly Self-Assembled Hybrid Templatesâ, in Functional
Nanostructured Materials through Multiscale Assembly and Novel Patterning Techniques, MRS
Proceedings 728, S8.40 (2002).
43. E.A. Guliants, Y.J. Song and W.A. Anderson, âA 0.5 ďm Thick Polysilicon Schottky Diode with
Rectification Ratio of 106
â, Applied Physics Letters 80, 1319 (2002).
44. C. Ji, E.A. Guliants, D.C. Abeysinghe, and W.A. Anderson, âSelf-Organized Si Nanowires with
Room-Temperature Photo-Emissionâ, in Functional Nanostructured Materials through Multiscale
Assembly and Novel Patterning Techniques, MRS Proceedings 728, S8.42 (2002).
45. P. Bhadri, K. Ye, E.A. Guliants, F.R. Beyette Jr., âImplementation of a Si/SiC hybrid optically
controlled high-power switching deviceâ, Silicon-Based and Hybrid Optoelectronics IV, SPIE
Proceedings of the International Society for Optical Engineering 4654, 101 (2002).
46. E.A. Guliants and W.A. Anderson, âStudy of Dynamics and Mechanism of Metal-Silicide Induced
Growth of Device-Quality Poly-Si â, Journal of Applied Physics 89, 4648 (2001).
47. E.A. Guliants, W.A. Anderson, L.P. Guo, and V.V. Guliants âTransmission Electron Microscopy
Study of Ni Silicides Formed During Metal-Induced Silicon Growth â, Thin Solid Films 385, 74
(2001).
48. E.A. Guliants and W.A. Anderson, âA Novel Method of Structure Control in Si Thin Film Technologyâ,
Journal of The Electrochemical Society 148, G156 (2001).
49. E.A. Guliants and W.A. Anderson, âThin Ni-Silicides for Low Resistance Ohmic Contacts and
Growth of Thin Crystalline Si Layersâ, in Gate Stack and Silicide Issues in Silicon Processing, edited
by L. Clevenger, S.A. Campbell, B. Herner, J. Kittl, P.R. Besser, MRS Proceedings 611, C7.14
(2001).
50. E.A. Guliants, Y.J. Song and W.A. Anderson, âPolycrystalline Silicon Thin Films for Microelectronic
Applicationsâ, in Amorphous and Heterogeneous Silicon Thin Films 2000, edited by R.W. Collins,
H.M. Branz, S. Guha, H. Okamoto, M. Stutzmann, MRS Proceedings 609, A8.7 (2001).
9. 9
51. Y.J. Song, E.A. Guliants and W.A. Anderson, âIn-Situ Mass Spectroscopy of ECR Silane Plasmas
for Amorphous and Microcrystalline Silicon Growthâ, in Amorphous and Heterogeneous Silicon Thin
Films 2000, edited by R.W. Collins, H.M. Branz, S. Guha, H. Okamoto, M. Stutzmann, MRS
Proceedings 609 A5.4 (2001).
52. E.A. Guliants and W.A. Anderson, âSilicon Crystal Growth On A Ni Silicide Seeding Layer By DC
Magnetron Sputteringâ, in Nucleation and Growth Processes in Materials, edited by A. Gonis, P.E.A.
Turchi, A.J. Ardell, MRS Proceedings 580, 111 (2000).
53. Y.J. Song, E. Guliants, M.-R. Park, and W.A. Anderson, âInfluence of Defects and Band Offsets
on Carrier Transport Mechanisms in Amorphous Silicon/Crystalline Silicon Heterojunction
Solar Cellsâ, Solar Energy Materials and Solar Cells 64, 225 (2000).
54. E.A. Guliants and W.A. Anderson, âCharacterization of Poly-Si Thin Films Deposited by Magnetron
Sputtering onto Ni Prelayersâ, Journal of Applied Physics 87, 3532 (2000).
55. B. Jagannathan, W.A. Anderson and E.A. Guliants, âLightweight, Thin-Film Si Heterojunction Solar
Cellsâ, Progress in Photovoltaics: Research and Applications 5, 433 (1997).
LIST OF CONFERENCE PRESENTATIONS AND INVITED LECTURES
1. E.A. Guliants, â1-D and 2-D Inorganic Structures in Nano-Bio Interfaces and Interactionsâ, Invited
seminar will be given at the Integrated Bio- Nano- Systems Symposium at the University at Buffalo,
Buffalo, NY, February 2015.
2. E.A. Guliants, K.A.S. Fernando, V. Watson, X. Wang, E. Shin, and E. Gaugler, âEffect of Metallic
Nanoparticles Decoration on Graphene Oxide Conductivityâ, American Physical Society, Denver, CO,
(March 2014).
3. E.A. Guliants and G. Subramanyam, âMaterials, Components, and Devices for Eletctric Energy
Systemsâ, 224th
ECS Meeting, San Francisco, CA (October 2013).
4. E.A. Guliants, âFunctional Nanoparticles for Energy Applicationsâ, Invited talk, Saint Louis
University, Saint Louis, MI, May 2012.
5. E.A. Guliants, âHow the Small World is Making a Big Differenceâ, Invited seminar, Schuster
Performing Arts Center, Ignite Innovation Symposium, Dayton, OH, March 2012.
6. V. Watson, K.A.S. Fernando, X. Wang, E.A. Guliants, and C.E. Bunker, âSynthesis of Graphene
Oxide from Graphite using Modified Hummers Method and Related Studiesâ 244th ACS National
Meeting, Philadelphia. (Poster, August, 2012)
7. X. Wang, V. Watson, K.A.S. Fernando, C.E. Bunker, and E.A. Guliants, âSynthesis of Silver decorated
Graphene Oxide with Different Concentrations of Ag Using Sonochemistryâ 244th ACS National
Meeting, Philadelphia, PA, 2012.
8. E.A. Guliants, âNanoengineering by Sonochemistryâ, Invited talk, University at Buffalo, Integrated
Nanostructures Systems Symposium, Buffalo, NY, April 2011.
9. M. Ahoujja, P. Shah, A. Sarangan, S. Elhamri, E.A. Guliants, âAnisotropic Electrical Properties of
Nanostructured Metallic Thin Filmsâ, American Physical Society meeting, Vol. 56 (1), 2011.
10. E.A. Guliants, âNanoscale Energetic Materialsâ, Invited talk, 2010 Innovation Summit, Dayton, OH,
March 2010.
11. E.A. Guliants, âNanotechnology Perspectivesâ, Spotlight on Advanced Research and Scholarship,
Dayton, OH, November 2010.
12. W. K. Lewis, B. A. Miller, E. A. Guliants, and C. E. Bunker âChemical Dynamics of Organically-
Passivated Aluminum Nanoparticles in Ammonium Nitrate and Ammonium Perchlorate Matricesâ â
Gordon Research Conference on Energetic Materials, Tilton, NH, June 13-18, 2010.
13. W. K. Lewis, B. A. Miller, K. A. S. Fernando, N. D. McNamara, E. A. Guliants, and C. E. Bunker
âCharacterizing the Energy Release of Energetic Materials Using Thermometric Spectral
Imagingâ - Gordon Research Conference on Energetic Materials, Tilton, NH, June 13-18, 2010.
10. 10
14. K.A.S. Fernando, N. D. McNamara, B.A. Harruff, M.J. Smith, E.A. Guliants, C.E. Bunker,
âSonochemical Assisted Synthesis of Aluminum and Silver Nanoparticles and Decoration of Single-
walled Carbon Nanotubes and Graphene Oxide with These Nanoparticlesâ, ACS Regional
Conference, Dayton, OH, 2010.
15. Fernando, K.A.S., McNamara, N. D., Jochum, M. C.; Harruff, B.; Smith, M.; Guliants, E.; Bunker, C. E.
âSonochemical Assisted Synthesis of Silver Nanoparticles and the Decoration of Single-Walled
Carbon Nanotubes and Graphene Oxideâ, UKC Conference in Seattle, WA, 2010.
16. W. K. Lewis, B. A. Miller, K. A. S. Fernando, N. D. McNamara, E. A. Guliants, and C. E. Bunker
âChemical Dynamics In Energetic Materials Incorporating Aluminum Nanoparticlesâ â 65th Ohio
State University International Symposium on Molecular Spectroscopy, Columbus, OH, June 25, 2010.
17. E.A. Guliants, âUltra-Fine Highly Energetic Core-Shell Nanoparticles with Triggerable Protective
Coatingsâ, DTRA Basic Research Review, DC, October 27, 2009 (invited).
18. B.A. Harruff, D.L. Gillaugh, D.W. Bair, J. Gord, T.M. Sexton, M.C. Jochum, E.N. Stachler, E.A.
Guliants, and C.E. Bunker, âIron Core-Shell Nanoparticles in Thin Films and Small Scale Fuel
Studiesâ, SERMACS 2009 (South East Regional Meeting of the ACS), Puerto Rico, October 2009.
19. M.J. Smith, K.A.S. Fernando, N. McNamara, B.A. Harruff, E.A. Guliants, and C.E. Bunker,
âSonochemical Synthesis of Aluminum Core-Shell Nanoparticles with Different Shell Materialsâ,
SERMACS 2009 (South East Regional Meeting of the ACS), Puerto Rico, October 2009.
20. S.W. Buckner, S.W. Chung, D.W. Hammerstroem, M.A. Burgers, C.E. Bunker, E.A. Guliants, P.A.
Jelliss, âAlkyl-Substituted Epoxides as Capping Agents for Aluminum Nanoparticlesâ, SERMACS 2009
(South East Regional Meeting of the ACS), Puerto Rico, October 2009.
21. D.W. Hammerstroem, S.W. Buckner, C.E. Bunker, E.A. Guliants, âAir Stability of Organically-Capped
Aluminum Nanoparticlesâ, SERMACS 2009 (South East Regional Meeting of the ACS), Puerto Rico,
October 2009.
22. M.A. Burgers, S.W. Buckner, P.A. Jelliss, C.E. Bunker, E.A. Guliants, SChung,; D.W. Hammerstroem,
âStability of Organically-Capped Aluminum Nanoparticlesâ, 44th
Midwest Regional Meeting of the
American Chemical Society, Iowa City, IA, Oct. 21 - 24, 2009.
23. C.D. Oberle, S.W. Buckner, P.A. Jelliss, C.E. Bunker, E.A. Guliants, S.W. Chung, D.W.
Hammerstroem, âCore-Shell Aluminum-Organic Nanomaterial Synthesisâ; 44th
Midwest Regional
Meeting of the American Chemical Society, Iowa City, IA, Oct. 21 - 24, 2009.
24. M.J. Smith, K.A.S. Fernando, E.A. Guliants, S.M. Hussain, L.K. Stolle, C.E. Bunker, âActive Aluminum
Core-shell Nanoparticles and Their Biological Relevanceâ, US-Korea Conference on Science,
Technology, and Entrepreneurship, San Diego, CA, August 2008.
25. K.A. S. Fernando, B.A. Harruff, M.J. Smith, W.K. Lewis, E.A. Guliants, C.E. Bunker, âSonochemical
Synthesis of Aluminum Nanoparticlesâ, US-Korea Conference on Science, Technology, and
Entrepreneurship, San Diego, CA, August 2008.
26. E.A. Guliants, âNovel Sensing Approaches Using Functional Hybrid Nanoparticlesâ, Ohio
Nanotechnology Summit, Cincinnati, OH, April 2008 (invited).
27. M.M. Stachler, J. Gord, E.A. Guliants, and C.E. Bunker,â Synthesis and Characterization of
Bionanocomposite Materialsâ, South-Eastern Regional ACS meeting, Greenville, SC October, 2007.
28. B.A. Harruff, M.J. Smith, E.A. Guliants, and C.E. Bunker, âSynthesis and Characterization of
Aluminum Nanostructures Prepared Via the Sonochemical Methodâ, South-Eastern Regional ACS
meeting, Greenville, SC October, 2007.
29. E.A. Guliants âCore-Shell Iron Nanoparticlesâ, Next Generation Materials for Defense, Arlington, VA,
March 2007 (invited).
30. E.A. Guliants and C.E. Bunker, âTuning Properties of Functional Iron Nanoparticles in Sonochemistryâ,
TMS Annual Meeting and Exhibition, Towards Functional Nanomaterials: Synthesis, Characterization,
and Applications, Orlando, FL, Feb 2007 (invited).
11. 11
31. C.E. Bunker, J.R. Gord, P.T. Morrison, S.W. Buckner, and E.A. Guliants, âAbsorption and
Fluorescence Studies of IR125 Complexes in Polymethyl Methacrylate Thin Filmsâ, 48th
Rocky
Mountain Conference on Analytical Chemistry, Rocky Mountains, CO, July 2006.
32. K.C. Novak, R. Schwarb, H. Bearbower, C.E. Bunker, E.A. Guliants, âCore-Shell Nanoparticles for
Nanoenergetics and Nanofluidicsâ, Ohio Nanotechnology Summit 2006, Columbus, OH, April 2006.
33. M.N. Germain, S.W. Buckner, and E.A. Guliants, âSynthesis of Srilankite Nanowires: Compositional
Ordering of Superlattices in Nanowire Structuresâ, 231st ACS National Meeting, Atlanta, GA, March
2006.
34. E. A. Guliants, âHigh Power Electronics Controlled by Lightâ, Electro-Optics and Electrical Engineering
Seminar Series, University of Dayton, Feb. 2006 (invited).
35. H. Bearbower, E.A. Guliants, C.E. Bunker, âSynthesis and Characterization of Magnetic and
Nonmagnetic Iron Oxide Nanoparticlesâ, 57th Southeast/61st Southwest Regional ACS Meeting,
Memphis, TN, Nov. 2005.
36. K.C. Novak, E.A. Guliants, C.E. Bunker, âProtein-Coated Iron Nanoparticles Prepared by the
Sonochemical Processâ, 57th Southeast/61st Southwest Regional ACS Meeting, Memphis, TN, Nov.
2005.
37. M. Germain, P. Fraundorf, N. Galvin, N. Sanders, S. Buckner, E.A. Guliants, âHydrothermal Synthesis
and Characterization of Nanowiresâ, 57th Southeast/61st Southwest Regional ACS Meeting,
Memphis, TN, Nov. 2005.
38. R.E. Schwarb, E.A. Guliants, C.E. Bunker, âSynthesis and Characterization of Reactive Core-shell
Nanoparticlesâ, 57th Southeast/61st Southwest Regional ACS Meeting, Memphis, TN, Nov. 2005.
39. E.A. Guliants, R. Schwarb, H. Bearbower, C.E. Bunker, âFunctional Nanoparticles in Thin Films as
Sensing Mediaâ, Nanomaterials and Nanotechnologies 2005, Crete, Greece, June 2005.
40. C.E. Bunker, E.A. Guliants, Y.P Sun, K.C. Novak, B. Harruff, Y. Lin, M. Mohammed, âSonochemical
Synthesis of Protein-Coated, Magnetic Iron Oxide Nanoparticles, Nanorodes, and Nanofibers", 207th
Meeting of The Electrochemical Society, Quebec City, Canada, May 2005.
41. R.E. Schwarb, C.E. Bunker, E.A. Guliants, N.L. Sanders, âDevelopment of Novel Nano-Additives for
Aviation Fuel Modificationâ, the 30th AIAA Dayton-Cincinnati Aerospace Sciences Symposium,
Dayton, OH, March, 2005.
42. K.C. Novak, E.A. Guliants, B.A. Harruff, Y.-P. Sun, Y. Lin, J. Meziani, C.E. Bunker, âProtein-Coated
Iron Nanoparticles for Advanced Fuel Diagnosticsâ, the 30th AIAA Dayton-Cincinnati Aerospace
Sciences Symposium, Dayton, OH, March, 2005.
43. J. Kim, W.A. Anderson, C.E. Bunker, and E.A. Guliants, âMorphological Changes while Growing
Nickel Monosilicide Nanowiresâ, MRS Fall Meeting, Boston, MA, Nov.-Dec. 2004.
44. C.E. Bunker, N.L. Sanders, J.J. Karnes, R.J. Schwarb, and E.A. Guliants, âTemperature Induced
Reactivity of Organic-Coated Core-Shell Nanoparticlesâ, 36th ACS Great Lakes Regional Meeting
2004, Peoria, IL, Oct. 2004.
45. C.E. Bunker, J.J. Karnes, E.A. Guliants, J.D Gord, and D.F. Phelps, âSensors and sensor
technologies for jet fuel analysisâ, 228th ACS National Meeting, Philadelphia, PA, Aug. 2004
46. E.A. Guliants, B.A. Haruff, J.R. Gord, and C.E. Bunker, âPhotophysical Properties of CdS
Nanoparticles in Thin Films for Opto-Chemical Sensingâ, MRS Spring Meeting, San Francisco, CA,
Apr. 2004.
47. E.A. Guliants, J. Karnes, and C.E. Bunker, âToward Highly Efficient CdS Nanoparticle Based Thin-
Film Fuel Sensorâ, 2nd annual Nano-Materials for Defense Applications Symposium, Maui, HI, Feb.
2004.
48. J. Karnes, N.L. Sanders, E.A. Guliants, and C.E. Bunker, âPreparation, Characterization, and
Reactivity of Iron Core-Shell Nanoparticlesâ, 2nd annual Nano-Materials for Defense Applications
Symposium, Maui, HI, Feb. 2004.
49. E.A. Guliants, âLithography-less Nanostructuring of Inorganic Semiconductorsâ, Electro-Optics
Program, University of Dayton, Dayton, OH, Oct. 2003.
12. 12
50. E.A. Guliants, J.D. Scofield, A.A. Agarwal, S.-H. Ryu, âHigh Power 4H-SiC Bipolar Junction Transistor
with Stable On-Resistance at High Injection Levelsâ, International Conference on Silicon Carbide and
Related Materials 2003 (ICSCRM2003), Lyon, France, Oct. 2003.
51. C. Ji, E.A. Guliants, and W.A. Anderson, âSilicon Nanostructures by Metal Induced Growth (MIG)
for Solar Cell Emittersâ, 29th
IEEE Photovoltaic Specialists Conference, New Orleans, LA, May 2002.
52. E.A. Guliants, M.A. Carreon, C. Ji, D.C. Abeysinghe, W.A. Anderson, and V.V. Guliants, âQuantum
Size Effect Silicon Structures via Molecularly Self-Assembled Hybrid Templatesâ, MRS Spring
Meeting, San Francisco, CA, Apr. 2002.
53. C. Ji, E.A. Guliants, D.C. Abeysinghe, and W.A. Anderson, âSelf-Organized Si Nanowires with Room-
Temperature Photo-Emissionâ, MRS Spring Meeting, San Francisco, CA, Apr. 2002.
54. P. Bhadri, K. Ye, E.A. Guliants, F.R. Beyette Jr., âImplementation of a Si/SiC hybrid optically controlled
high-power switching deviceâ, Silicon-Based and Hybrid Optoelectronics IV, International Society for
Optical Engineering Meeting, San Jose, CA, Bellingham, WA, 2002.
55. E.A. Guliants, C. Ji and W.A. Anderson, âNucleation and Heteroepitaxy Processes in Self-Assembly of
Si Nanostructuresâ, 43rd
Electronic Materials Conference, Notre Dame, IN, June 2001.
56. P. Bhadri, D. Sukumaran, K. Ye, S. Dasgupta, E.A. Guliants and F.R. Beyette Jr., âDesign of a Smart
Optically Controlled High Power Switch For Fly-by-Light Applicationsâ, 44th
IEEE Midwest Symposium
on Circuits and Systems, Dayton, OH Aug. 2001.
57. E.A. Guliants and W.A. Anderson, âMetal-Induced Growth of Poly-Si On Foreign Substrates For
Solar Cell Applicationsâ, 28th
IEEE Photovoltaic Specialists Conference, Anchorage, AL, Sept. 2000.
58. E.A. Guliants, âSilicon by Catalytic Growth: Mechanism, Characterization, Applicationsâ,
AFRL/Sensors Directorate, WPAFB, OH, June 2000.
59. E.A. Guliants and W.A. Anderson, âA Novel Method of Structure Control in Si Thin Film Technologyâ,
197th
Meeting of The Electrochemical Society, Toronto, ON, May 2000.
60. E.A. Guliants and W.A. Anderson, âThin Ni-Silicides for Low Resistance Ohmic Contacts and Growth
of Thin Crystalline Si Layersâ, MRS Spring Meeting, San Francisco, CA, Apr. 2000.
61. E.A. Guliants, Y.J. Song and W.A. Anderson, âPolycrystalline Silicon Thin Films for Microelectronic
Applicationsâ, MRS Spring Meeting, San Francisco, CA, Apr. 2000.
62. Y.J. Song, E.A. Guliants and W.A. Anderson, âIn-Situ Mass Spectroscopy of ECR Silane Plasmas for
Amorphous and Microcrystalline Silicon Growthâ, MRS Spring Meeting, San Francisco, CA, Apr. 2000.
63. E. Guliants and W.A. Anderson, âSilicon Crystal Growth On A Ni Silicide Seeding Layer By DC
Magnetron Sputteringâ, MRS Fall Meeting, Boston, MA, Nov.-Dec. 1999.
64. Y.J. Song, E. Guliants and W.A. Anderson, â Towards A Thin Film Silicon Heterojunction Solar
Cellâ, 16th
Space Photovoltaic Research & Technology Conference, Cleveland, OH, Aug. 1999.
65. B. Jagannathan, W.A. Anderson and E. Klementieva/Guliants/, âLightweight, Thin-Film Si
Heterojunction Solar Cells â, 15th
Space Photovoltaic Research & Technology Conference,
Cleveland, OH, June, 1997.
BOOK CHAPTER
Y.-P. Sun, M. Meziani, F. Lu, L. Cao, C.E. Bunker, and E.A. Guliants, "Fluorinated Templates for Energy-
Related Nanomaterials and Applications", in "Fluorine-related Nanoscience with Energy Applications",
ACS Books (2010).
PATENT
C.E. Bunker, K.A. S. Fernando, E.A. Guliants, M.J. Smith, B.A. Harruff
METHOD OF GENERATING HYDROGEN FROM THE REACTION OF STABILIZED ALUMINUM
NANOPARTICLES WITH WATER AND METHOD OF FORMING STABILIZED ALUMINUM
NANOPARTICLES
U.S. Patent # US 09011572 issued March 2015