It's simple to understand the synthesis. Hydrothermal method is a chemical reaction in water in a sealed pressure vessel, which is in fact a type of reaction at both high temperature and pressure.
Synthesis and Characterisation of Copper Oxide nanoparticlesIOSR Journals
Cupric oxide (CuO) nanoparticles were prepared by the chemical route by calcinations at a higher temperature from 300oC to 400 oC. For the comparison transmission electron microscopy (TEM) and x-ray diffraction (XRD) measurements were made through JCPDS. There is good agreement between data produced by spectroscopy and the microscopic measurements.
It's simple to understand the synthesis. Hydrothermal method is a chemical reaction in water in a sealed pressure vessel, which is in fact a type of reaction at both high temperature and pressure.
Synthesis and Characterisation of Copper Oxide nanoparticlesIOSR Journals
Cupric oxide (CuO) nanoparticles were prepared by the chemical route by calcinations at a higher temperature from 300oC to 400 oC. For the comparison transmission electron microscopy (TEM) and x-ray diffraction (XRD) measurements were made through JCPDS. There is good agreement between data produced by spectroscopy and the microscopic measurements.
degradation of pollution and photocatalysisPraveen Vaidya
The presentation deals with the use of conduction of photocatalytic reaction using the transition metal doped transparent semiconducting thinfilms. The precursor to film is prepared by the SILAR method, which is a chemical method.
In attendance study focuses on the removal of ZnO nano particles by green chemical reduction method from
the bio components of leaves extract of Gigantic-Swallow-Wort. X-Ray Diffraction (XRD), FT-IR Spectroscopy
characterizations was done for synthesized ZnO nanoparticles. X- ray diffraction studies showed that the particles
are hexagonal in scenery.
degradation of pollution and photocatalysisPraveen Vaidya
The presentation deals with the use of conduction of photocatalytic reaction using the transition metal doped transparent semiconducting thinfilms. The precursor to film is prepared by the SILAR method, which is a chemical method.
In attendance study focuses on the removal of ZnO nano particles by green chemical reduction method from
the bio components of leaves extract of Gigantic-Swallow-Wort. X-Ray Diffraction (XRD), FT-IR Spectroscopy
characterizations was done for synthesized ZnO nanoparticles. X- ray diffraction studies showed that the particles
are hexagonal in scenery.
Synthesis and characterization of ZnO nanoparticles via aqueous solution, sol...iosrjce
ZnO nanoparticles were synthesized by aqueous solution method, sol-gel method and hydrothermal
method.The synthesized particles were characterized by XRD ,SEM ,EDX and UV .The X-ray diffraction studies
reveals that the synthesized ZnO nanoparticles have wurtzite structure and the particle size varies from 13 to 18
nm. Scanning Electron Microscopic investigation reveals that the surface morphology of ZnO nanoparticle is
spherical in hydrothermal process and varies to flower like arrangement in aqueous solution and sol-gel
process. The UV-Visible spectrum of the nanoparticles shows a blue shift compared to that of the bulk sample.
A NOVEL PRECURSOR IN PREPARATION AND CHARACTERIZATION OF NICKEL OXIDE (NIO) A...antjjournal
Synthesis of Nickel Oxide (NiO) nanoparticles and cobalt oxide (CO3O4) materials synthesis by aqueous chemical growth (ACG) Techniques. Oxide based material having a wide band gap, and suitable for optical devices,Optoelectronic devices, UV photodetector, and Light emitting diode LEDs. The analysis
and characterizationof Nickel Oxide (NiO) and cobalt oxide (CO3O4) nanoparticles by(1) X-ray diffraction (XRD), (2) Scanning electron microscopy (SEM), and (3) Ultraviolet–visible (UV–Vis) spectroscopy.
A Research Article on Synthesis of Metal Nano Particles by Chemical Reduction...ijtsrd
Nanotechnology is an experimental and engineering technology manipulate at the nanoscale, such as in the field of different compound fabric synthesizing, food processing agriculture processing and as well as in medicinal application. Due to their physical and chemical applications the metal nanoparticles have a great interest in research. A variety of physical, chemical and biological method that can be used for the synthesis of the metal nanoparticle. All the methods have positive advantages as well as some obstruction. In this following review we try to explain recent research on the synthesis and various application of metal nanoparticle. We summarized the different chemical reduction method and briefly explain their application. Vijay Aithekar | Dr. Sangeeta Gautam "A Research Article on Synthesis of Metal Nano Particles by Chemical Reduction Method" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-3 | Issue-5 , August 2019, URL: https://www.ijtsrd.com/papers/ijtsrd26371.pdfPaper URL: https://www.ijtsrd.com/physics/nanotechnology/26371/a-research-article-on-synthesis-of-metal-nano-particles-by-chemical-reduction-method/vijay-aithekar
BaAl1.4Si0.6O3.4N0.6:Eu 2+ green phosphors’ application for improving lumin...IJECEIAES
The molten salt synthesis (MSS) method was used to effectively prepare green phosphors BaAl1.4Si0.6O3.4N0.6:Eu 2+ (or BSON:Eu 2+ ) via one homogeneous sphere-like morphology utilizing NaNO3 in the form of the reacting agent. The phosphors produced one wide stimulation spectrum between 250 and 460 nm, as well as a significant green emission has a maximum point at 510 nm owing to the 4f 6 1 5d 7 -4f 8 ( S7/2) shifts for Eu 2+ ions. With illumination under 365 as well as 450 nm, the ideal discharge strengths for the specimen prepared utilizing melted salt would receive a boost of 17% and 13%, surpassing the specimen prepared utilizing the traditional solid-state reaction (SSR) approach. The abatement of concentration for the ions of Eu 2+ from BSON:Eu 2+ is 5 mol%. In addition, the interactivity of dipole-dipole would be the cause of said abatement. Heat abatement would be studied utilizing the formation coordinate method with abatement temperature reaching ∼200 C. Elemental mapping as well as power-dispersing X-ray spectroscopy (EDS) spectra demonstrated that the expected BaAl1.4Si0.6O3.4N0.6:Eu 2+ materials were formed.
Synthesis MgO nanopowder using Sol-gel technique: A critical reviewPratish Rawat
During the last decade, it has realized that when materials are synthesized to nanoscale dimensions, they will show new and remarkably improved physical and chemical properties. Due to its wide and major applications, in-depth investigations have been carried out on metal oxide nanomaterials. A significant amount of research is going on in synthesis and characterization of MgO/PVA nanocomposites. Some of the literature has been reviewed to get the idea about the synthesis and characterization of MgO/PVA nanocomposites using sol-gel technique.
Preparation, Structure, and Characterization of Nd2mo2o9 fast Oxide Ion Condu...IJARIIT
The structure and ion conductivity of Nd2Mo2O9powders were synthesized by using Nd(NO2)3, MoO3, and aspartic acid (fuel) in assisted combustion method with heating at 550˚C for 6 hours. The thermal decomposition, phase identification, morphology, ionic conductivity of the samples were studied by TGA/DTA, XRD and SEM four probe D.C. method respectively. The formation of Nd2Mo2O9 was confirmed by FTIR studies. The synthesis and crystallization were followed by thermochemical techniques (TGA/DTA) studies. The synthesized materials showed reasonable ionic conductivity. These results indicate that assisted combustion method is a promising method to prepare nanocrystalline Nd2Mo2O9 for solid oxide fuel cell.
Carbon-cuprous oxide composite nanoparticles
were chemically deposited on surface of thin glass tubes of spent
energy saving lamps for solar heat collection. Carbon was
obtained from fly ash of heavy oil incomplete combustion in
electric power stations. Impurities in the carbon were removed by
leaching with mineral acids. The mineral free-carbon was then
wet ground to have a submicron size. After filtration, it was
reacted with concentrated sulfuric/fuming nitric acid mixture on
cold for 3-4 days. Potassium chlorate was then added drop wise on
hot conditions to a carbon slurry followed by filtration.
Nanocarbon sample was mixed with 5% by weight PVA to help
adhesion to the glass surface. Carbon so deposited was doped with
copper nitrate solution. After dryness, the carbon/copper nitrate
film was dipped in hydrazine hydrate to form cuprous oxide -
carbon composite, It was then roasted at 380-400 °C A heat
collector testing assembly was constructed of 5 glass coils
connected in series with a total surface area of 1250 cm2
. Heat
collection was estimated by water flowing in the glass coils that
are coated with the carbon/copper film,. Parameters affecting the
solar collection efficiency such as time of exposure and mass flow
rate of the water were studied. Results revealed that the prepared
glass coil has proven successful energy collector for solar heat.
Synthesis of flower-like magnetite nanoassembly: Application in the efficient...Pawan Kumar
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
Mössbauer 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.
Synthesis of flower-like magnetite nanoassembly: Application in the efficient...Pawan Kumar
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
Mössbauer 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.
Synthesis and characterization of pure zinc oxide nanoparticles and nickel do...eSAT Journals
Abstract In this paper, Zinc oxide nanoparticles are synthesized by simple wet chemical precipitation method. Zinc nitrate and sodium hydroxide are used as the starting materials.Zinc oxide nanoparticles are formed at a very low temperature of the order of 800C. Nickel doped zinc oxide nanoparticles are synthesized in two steps. In first step precipitate is obtained by reduction of mixture of zinc nitrate, ferric nitrate and starch by sodium hydroxide solution while in second step the given precipitate is thermally decomposed at high temperature of the order of 4000C. The crystallinity of the synthesized nanoparticles is then confirmed by X ray diffraction spectroscopy (XRD).The elemental composition of the powder is detected by Energy Dispersive X ray spectroscopy (EDAX). The morphology of the powder is investigated by Scanning Electron Microscopy (SEM). Magnetic characterization of nickel doped zinc oxide nanoparticles is done by Squid Magnetometer. Low temperature magnetization behavior revealed ferromagnetic behavior of sample. Key Words: Zinc oxide nanoparticles, Nickel doped ZnO, Antibacterial activity, Squid magnetometer, SEM
Thermal Oxidation of Copper for Favorable Formation of Cupric Oxide (CuO) Sem...IOSR Journals
Thermal oxidation of copper has been restudied to control the formation of photovoltaic active cupric oxide (CuO) phase against the cuprous oxide (Cu2O) phase. It has been established that the thermal oxidation of copper is governed by the outward lattice diffusion and grain boundary diffusion of copper ions at the interface. The lattice diffusion favors the formation of Cu2O phase whereas grain boundary diffusion favors the formation of CuO phase. In the present work, a fine copper powder is taken as starting material for thermal oxidation to increase the grain boundary diffusion and to study its on phase formation. Further, to suppress the grain boundary diffusion the starting material is chemically passivated with diethylenetriamine and olelamine to chameically passivated the surface defects. Thermal oxidation of these pre-treated materials is carried out in open air at temperature 500 oC and 700 oC to study the phase formation. The resulting materials are characterized by x-ray diffraction and scanning electron microscopy. These studies clearly confirm that grain boundary diffusion or defect mediated diffusion due to small particle size and more surface atoms of copper favor the formation of CuO at low temperature in case of pure copper, whereas the chemical passivation and high temperature heating favours the formation of Cu2O phase and hence the resulting material is biphasic. Hence, the present study is useful information in controlling the phase formation of copper oxide to obtain more photoactive material that is CuO.
Forklift Classes Overview by Intella PartsIntella Parts
Discover the different forklift classes and their specific applications. Learn how to choose the right forklift for your needs to ensure safety, efficiency, and compliance in your operations.
For more technical information, visit our website https://intellaparts.com
Democratizing Fuzzing at Scale by Abhishek Aryaabh.arya
Presented at NUS: Fuzzing and Software Security Summer School 2024
This keynote talks about the democratization of fuzzing at scale, highlighting the collaboration between open source communities, academia, and industry to advance the field of fuzzing. It delves into the history of fuzzing, the development of scalable fuzzing platforms, and the empowerment of community-driven research. The talk will further discuss recent advancements leveraging AI/ML and offer insights into the future evolution of the fuzzing landscape.
Industrial Training at Shahjalal Fertilizer Company Limited (SFCL)MdTanvirMahtab2
This presentation is about the working procedure of Shahjalal Fertilizer Company Limited (SFCL). A Govt. owned Company of Bangladesh Chemical Industries Corporation under Ministry of Industries.
COLLEGE BUS MANAGEMENT SYSTEM PROJECT REPORT.pdfKamal Acharya
The College Bus Management system is completely developed by Visual Basic .NET Version. The application is connect with most secured database language MS SQL Server. The application is develop by using best combination of front-end and back-end languages. The application is totally design like flat user interface. This flat user interface is more attractive user interface in 2017. The application is gives more important to the system functionality. The application is to manage the student’s details, driver’s details, bus details, bus route details, bus fees details and more. The application has only one unit for admin. The admin can manage the entire application. The admin can login into the application by using username and password of the admin. The application is develop for big and small colleges. It is more user friendly for non-computer person. Even they can easily learn how to manage the application within hours. The application is more secure by the admin. The system will give an effective output for the VB.Net and SQL Server given as input to the system. The compiled java program given as input to the system, after scanning the program will generate different reports. The application generates the report for users. The admin can view and download the report of the data. The application deliver the excel format reports. Because, excel formatted reports is very easy to understand the income and expense of the college bus. This application is mainly develop for windows operating system users. In 2017, 73% of people enterprises are using windows operating system. So the application will easily install for all the windows operating system users. The application-developed size is very low. The application consumes very low space in disk. Therefore, the user can allocate very minimum local disk space for this application.
Quality defects in TMT Bars, Possible causes and Potential Solutions.PrashantGoswami42
Maintaining high-quality standards in the production of TMT bars is crucial for ensuring structural integrity in construction. Addressing common defects through careful monitoring, standardized processes, and advanced technology can significantly improve the quality of TMT bars. Continuous training and adherence to quality control measures will also play a pivotal role in minimizing these defects.
NO1 Uk best vashikaran specialist in delhi vashikaran baba near me online vas...Amil Baba Dawood bangali
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Sachpazis:Terzaghi Bearing Capacity Estimation in simple terms with Calculati...Dr.Costas Sachpazis
Terzaghi's soil bearing capacity theory, developed by Karl Terzaghi, is a fundamental principle in geotechnical engineering used to determine the bearing capacity of shallow foundations. This theory provides a method to calculate the ultimate bearing capacity of soil, which is the maximum load per unit area that the soil can support without undergoing shear failure. The Calculation HTML Code included.
Event Management System Vb Net Project Report.pdfKamal Acharya
In present era, the scopes of information technology growing with a very fast .We do not see any are untouched from this industry. The scope of information technology has become wider includes: Business and industry. Household Business, Communication, Education, Entertainment, Science, Medicine, Engineering, Distance Learning, Weather Forecasting. Carrier Searching and so on.
My project named “Event Management System” is software that store and maintained all events coordinated in college. It also helpful to print related reports. My project will help to record the events coordinated by faculties with their Name, Event subject, date & details in an efficient & effective ways.
In my system we have to make a system by which a user can record all events coordinated by a particular faculty. In our proposed system some more featured are added which differs it from the existing system such as security.
Explore the innovative world of trenchless pipe repair with our comprehensive guide, "The Benefits and Techniques of Trenchless Pipe Repair." This document delves into the modern methods of repairing underground pipes without the need for extensive excavation, highlighting the numerous advantages and the latest techniques used in the industry.
Learn about the cost savings, reduced environmental impact, and minimal disruption associated with trenchless technology. Discover detailed explanations of popular techniques such as pipe bursting, cured-in-place pipe (CIPP) lining, and directional drilling. Understand how these methods can be applied to various types of infrastructure, from residential plumbing to large-scale municipal systems.
Ideal for homeowners, contractors, engineers, and anyone interested in modern plumbing solutions, this guide provides valuable insights into why trenchless pipe repair is becoming the preferred choice for pipe rehabilitation. Stay informed about the latest advancements and best practices in the field.
Welcome to WIPAC Monthly the magazine brought to you by the LinkedIn Group Water Industry Process Automation & Control.
In this month's edition, along with this month's industry news to celebrate the 13 years since the group was created we have articles including
A case study of the used of Advanced Process Control at the Wastewater Treatment works at Lleida in Spain
A look back on an article on smart wastewater networks in order to see how the industry has measured up in the interim around the adoption of Digital Transformation in the Water Industry.
Overview of the fundamental roles in Hydropower generation and the components involved in wider Electrical Engineering.
This paper presents the design and construction of hydroelectric dams from the hydrologist’s survey of the valley before construction, all aspects and involved disciplines, fluid dynamics, structural engineering, generation and mains frequency regulation to the very transmission of power through the network in the United Kingdom.
Author: Robbie Edward Sayers
Collaborators and co editors: Charlie Sims and Connor Healey.
(C) 2024 Robbie E. Sayers
Courier management system project report.pdfKamal Acharya
It is now-a-days very important for the people to send or receive articles like imported furniture, electronic items, gifts, business goods and the like. People depend vastly on different transport systems which mostly use the manual way of receiving and delivering the articles. There is no way to track the articles till they are received and there is no way to let the customer know what happened in transit, once he booked some articles. In such a situation, we need a system which completely computerizes the cargo activities including time to time tracking of the articles sent. This need is fulfilled by Courier Management System software which is online software for the cargo management people that enables them to receive the goods from a source and send them to a required destination and track their status from time to time.
2. Citation: Singh J, Kaur G, Rawat M. A Brief Review on Synthesis and Characterization of Copper Oxide Nanoparticles and its Applications. J
Bioelectron Nanotechnol 2016;1(1): 9.
J Bioelectron Nanotechnol 1(1): 9 (2016) Page - 02
shows good agglomeration of CuO nanoparticles.
Abboud Y, et al. proposed an eco-friendly and convenient
method for the synthesis of CuO nanoparticles using brown alga
(Bifurcaria bifurcata) extract [8]. No chemical reagent or surfactant
template was required in this method, which consequently enables
the bioprocess with the advantage of being environmental friendly.
The developed nanoparticles were characterized by UV-VIS, TEM,
XRD and FTIR measurements and showed good antibacterial
activity. This biosynthesis technique can be a promising method for
the preparation of other metals and metal oxide nanoparticles and
can be valuable in environmental, biotechnological, pharmaceutical
and medical applications (Figure 4).
Lanje AS, et al. studied that CuO nanoparticles are rectangular
in shape with average size of 5-6 nm with monoclinic structure are
synthesized by aqueous precipitation method [9]. The band-edge
emission peak is found at 398 nm and green emission peak is found at
527 nm. The band-edge absorption is found to be at 355 nm (Figures
5 and 6).
Volanti DP, et al. proposed hydrothermal microwave method for
the synthesis of CuO flower-nanostructures after thermal treatment
at 393 K for 1 h [10]. The CuO flower-nanostructures with single
phase were identified by XRD and micro-Raman techniques and
present monoclinic lattice. The average diameter is of CuO flower-
nanostructures = 1.3 m. The obtained CuO flower-nanostructures are
promising candidate for potential application in catalysis (Figure 7).
Sahay R, et al. fabricated highly crystalline CuO nanofibers with
possible energy applications analyzed the effect of the dwelling time of
the annealing cycle for the formation of the crystallite CuO nanofibers
and observed with an increase in the dwelling time the crystallite size
of CuO nanofibers decreased and results in the improved orientation
of the CuO nanofibers [11]. The highly ordered morphology obtained
at 12 h was employed for photo-catalytic study. A 25% increase in the
current density was observed with the application of CuO as blocking
layer.
Wongpisutpaisana N, et al. proposed that well defined CuO
nanoparticles are synthesized by a sono-chemical synthesis by the
assistance of ultrasound with the reaction time up to 30 min and
calcination at 600-700 °C [12]. It was additionally revealed that
its crystallization and particle size was strongly dependent on the
reaction time and calcination temperature (Figure 8).
Ghane M, et al. examined that the novel dry synthetic methods
such as thermal decomposition of oxalate precursor for the synthesis
of binary nano metal oxides (Copper Oxide) [13]. The synthesis
route involves facile solid-phase mechano-chemical activation of a
physical mixture of simple copper salts and oxalic acid, followed by
calcination of the as-ground oxalate precursors at 450 °C. SEM and
XRD data lead to the particle diameters: < 10 nm for CuO (Figure 9).
Ethiraj AS, et al. proposed that by using a simple and inexpensive
wet chemical method, copper oxide nanowires prepared with
diameters of 90 nm and lengths of several micrometers [14]. The
CuO nanowires prepared via this method have wide applications
for industrial applications which require mass production and low
Figure 1: Schematic representation of a monoclinic CuO unit cell.
A B
Figure 2: (a) SEM of CuO-NPs before adsorption of methylene blue.
(b) SEM of CuO-NPs after adsorption of methylene blue.
A B
Figure 3: High resolution TEM images of different CuO nanostructures. (a)
Quasi-spherical microarchitectures and (b) Long-straw.
Figure 4: Color change during the phytoreduction of CuSO4 into CuO
nanoparticles at the beginning and after 48 h of reaction.
Figure 5: UV-vis absorption spectrum of CuO nanoparticles prepared with
alga extract. (A) Alga extract as control (B) Solution formed at the end of the
reaction.
3. Citation: Singh J, Kaur G, Rawat M. A Brief Review on Synthesis and Characterization of Copper Oxide Nanoparticles and its Applications. J
Bioelectron Nanotechnol 2016;1(1): 9.
J Bioelectron Nanotechnol 1(1): 9 (2016) Page - 03
nanoparticles are smaller than CuO non stabilized nanoparticles
that prepared at the same temperature. X-Ray diffract to gram
peaks showed that all obtained CuO NPs have monoclinic structure.
Studying the effect of different concentrations of NaOH reducing
agent and TOAB surfactant on the CuO nanoparticles size and
morphology and antibacterial activity of CuO nanoparticles with
other surfactants can be considered as future work (Figure 11).
Nasibulin AG, et al. [16] studied the thermal decomposition of
copper acetylacetonate vapor using a vertical flow reactor at ambient
nitrogen pressure for the synthesis of Crystalline nanometer-
sized copper (I) oxide particle. They performed experiments in the
precursor vapor pressure range of Pprec
= 0.06 to 44 Pa at furnace
temperatures of 431.5 °C, 596.0 °C, and 705.0 °C. Crystalline product
of the decomposition depended on the precursor vapor pressure.
The formation of copper (I) oxide particles occurs due to the surface
reaction of the decomposition products (mainly carbon dioxide).
They proposed a model to build a semi empirical phase diagram of
the precursor decomposition products (Figure 12).
Zhu H, et al. proposed a wet chemical method to synthesize
stable CuO nanofluids in a large-scale [17]. Different copper salts
resulted in different particle morphologies. Size and shape of clusters
of primary nanoparticles are affected by concentration of copper
acetate and reaction time. By changing the synthesis parameters
nanofluids with different microstructures could be obtained. The
thermal conductivity of CuO nanofluids increased with the increase
of particle loading(Figure 13).
Kannaki K, et al. proposed the hydrothermal route for synthesis of
copper oxide nano particles [18]. It is confirmed by XRD analysis. The
UV-Visible study shows the radiation in red region can be applicable
Figure 6: SEM image of as prepared CuO nanoparticles.
Figure 7: Mechanism of the CuO flower-nanostructures formation in
comparison to a flower with thorns.
Figure 8: Change of absorbance values of methyl orange in the presence of
CuO nanofibers under UV illumination.
Figure 9: SEM images of CuO nanoparticles calcined at (a) 400 °C, (b) 500
°C, (c) 600 °C, and (d) 700 °C.
Figure 10: FTIR of CuO products obtained after calcinations at 450 °C for 2 h.
thermal budget technique. The Fourier transform infrared spectrum
analysis, energy dispersive X-ray analysis, X-ray diffraction analysis,
and X-ray photoemission spectrum analysis confirm clearly the
formation of a pure phase high-quality CuO with monoclinic crystal
structure (Figure 10).
Mousa MK proposed fast, inexpensive and simple quick
precipitation method and control the size with different temperature;
65,75 and 85 °C. By increasing temperature leads to decrease
of nanoparticles size [15]. The sizes of CuO-TOAB stabilized
Figure 11: The FTIR spectrum of the synthesized CuO nanowires in the
presence of TG.
4. Citation: Singh J, Kaur G, Rawat M. A Brief Review on Synthesis and Characterization of Copper Oxide Nanoparticles and its Applications. J
Bioelectron Nanotechnol 2016;1(1): 9.
J Bioelectron Nanotechnol 1(1): 9 (2016) Page - 04
for fabrication of optoelectronic devices. The FTIR analysis reveals
the characterization peaks for CuO stretching. The adsorption of
ammonia is confirmed by FTIR spectra. The spherical Morphology is
confirmed by SEM/EDS (Figure 14). This method may be suitable for
large scale production of CuO nanoparticles for practical applications.
Darezereshki E, et al. spherical CuO nanoparticles with
mean diameter of 170±5 nm have been prepared by a thermal
decomposition method [19]. This method does not require organic
solvents, expensive raw materials and complicated equipment. So,
it is concluded that the presented method is superior to the other
methods for the synthesis of CuO nanoparticles from dilute CuSO4
solution (Figure 15).
Srivastava S, et al. Cupric oxide (CuO) nanoparticles were
prepared by the chemical route by calcinations at a higher temperature
from 300 °C to 400 °C [20]. For the comparison transmission electron
microscopy (TEM) and x-ray diffraction (XRD) measurements
were made through JCPDS. There is good agreement between data
produced by spectroscopy and the microscopic measurements.
Ayask HK, et al. synthesize of copper oxide nanoparticles using
copper hydroxide by mechanochemical process [21]. The main
advantage of this study is CuO nanoparticles with narrow size
distribution without subsequent annealing during the process. The
results of X-ray diffraction (XRD) indicated that the dehydration
of Cu(OH)2
into CuO was completed after three hours of milling.
Structural analysis using scanning electron microscopy (SEM)
equipped with energy dispersive spectroscopy (EDS), transmission
electron microscopy (TEM) and particle size analyzer (PSA) showed
that CuO particles had moderately equiaxed shape with sizes ranging
from 10-27 nm.
According to DTA and DDTA curves, an evident endothermic
peak was observed at approximately 180-200 °C. This temperature
range corresponds to the dehydration of Cu(OH)2
and the formation
of CuO (Figure 16).
Nithya K, et al. Copper oxide nanoparticles were prepared by
modified sol-gel technique using sodium dodecyl sulphate as a
surfactant [22]. Effect of calcination temperature on particle size,
band-gap, crystallinity and morphology of the nanoparticles were
studied with the help of particle size analysis, UV-Spectroscopy,
powder X-Ray Diffraction (XRD) and Scanning Electron Microscopy
(SEM) studies (Figure 17). Prepared nanoparticles will be tested for
their activity towards gas sensing.
Karthik AD, et al. the present investigation reports, the novel
synthesis of Copper and Copper oxide nanoparticles using Chemical
reduction method and its physicochemical characterization [23].
The nanoparticles have been prepared using Copper (II) succinate
as precursor. Copper nanoparticles are initially formed and
subsequently oxidized to copper oxide. As reported the nanoparticles
were characterized by UV-visible spectroscopy, Fourier transform
infra-red spectroscopy (FTIR), X-ray diffraction measurements
(XRD) and scanning electron microscopy (SEM). SEM analysis
exhibited nanoparticles with an average diameter of about 45 nm
(Figure 18). XRD analysis revealed broad pattern of fcc crystal
Figure 12: XRD pattern of CuO nanoparticles were prepared at 65 °C with
TOAB surfactant.
Figure 13: Schematic diagram for the preparation of CuO nanoparticle.
Figure 14: SEM/EDS images of CuO nanoparticles.
Figure 15: Schematic diagram of experimental procedure of CuO
nanoparticles.
Figure 16: SEM a) SEM micrographs and b) EDS patterns of CuO powders.
5. Citation: Singh J, Kaur G, Rawat M. A Brief Review on Synthesis and Characterization of Copper Oxide Nanoparticles and its Applications. J
Bioelectron Nanotechnol 2016;1(1): 9.
J Bioelectron Nanotechnol 1(1): 9 (2016) Page - 05
Figure 18: SEM image of CuO nanoparticles.
Figure 19: Cassia alata plant.
Figure 17: DTA and TGA curves of as-prepared Cu(OH)2.v.
structure of copper metal and cubic cuprites structure for Cu2
O. The
antimicrobial properties of copper nanoparticles were investigated
using Streptococcus pyogenes, Pseudomonas aeruginosa, Escherichia
coli, and Staphylococcus aureus. The bactericidal effects of copper
nanoparticles were studied based on diameter of inhibition zone in
disk diffusion tests of nanoparticles dispersed in batch cultures. The
copper nanoparticles showed excellent activity against Escherichia
coli and Staphylococcus aureus, with excellent inhibition zones of 14
mm and 10 mm, respectively. Bacterial sensitivity to nanoparticles
was found to vary depending on the microbial species.
Shah MA, et al. temperature and pressure, both of which can
affect the super saturation and nucleation are responsible for
solvents properties [24]. In this study, we use water as solvent
under supercritical conditions and report copper (Cu) and (Cu2
O)
nanoparticles of size ranging from 9 nm to 60 nm. This synthetic
technique has the following advantages: Firstly, it is one step synthesis
approach, making it easy to control the growth kinetics. Secondly, the
synthesis needs no sophisticated equipment. Thirdly, the approach is
non-toxic without producing hazardous waste as water is being used
as solvent as well as source of oxygen. Forth, it is a surfactant free
synthesis and has bright prospects.
Jayalakshmi, et al. Water-soluble cupric oxide nanoparticles
are stable over a wide range of pH and temperature. This excellent
stability in the form of aqueous colloidal suspensions makes the
application of the water-soluble CuO nanoparticles easier in aqueous
systems [25]. In the present study, copper oxide nanoparticles are
synthesized using flower extract (aqueous) of Cassia alata L., member
belonging to family Fabaceae profusely growing in the wild (Figure
19). The synthesized nanoparticles are subjected to SEM, EDX,
XRD to understand the particle characteristics of the copper oxide
nanoparticles which closely matched with JCPDC standard (Figure
20).
Rani R, et al. Purewal Monoclinic CuO nanoparticles were
synthesized by reverse micelle technique [26]. Size and morphology
were characterized by using XRD, and TEM techniques. FTIR
technique was used to ensure the bonding between metal and oxygen.
Antibacterial activity of CuO nanoparticles were tested against
bacterial strains K. pneumoniae, S. typhimurium, and E. aerogenes
using the agar diffusion method. Minimum inhibitory concentration
of these three gram-negative bacterial strains K. pneumoniae, S.
typhimurium, and E. aero genes were found to be 0.55, 0.15, and 0.30
µg/ml, respectively (Figure 21).
Radhakrishnan AA, et al. nanostructured materials have wide
range of applications due to their interesting size-dependent chemical
and physical properties compared to particles of size in the range of
micrometer [27]. Copper oxide nano materials are of interest on
Figure 20: Biosynthesis reaction.
Figure 21: Antibacterial activity of CuO nanoparticles at different
concentrations against K. pneumoniae, S. typhimurium, and E. aerogenes as
a, b, and c, respectively.
6. Citation: Singh J, Kaur G, Rawat M. A Brief Review on Synthesis and Characterization of Copper Oxide Nanoparticles and its Applications. J
Bioelectron Nanotechnol 2016;1(1): 9.
J Bioelectron Nanotechnol 1(1): 9 (2016) Page - 06
account of their potential uses in many technological fields. In this
study CuO nanoparticles were synthesized via simple sol gel method
using basic CuSO4
as wet chemically synthesized precursor and NaOH
as stabilizing agent. Samples were characterized by X-ray diffraction
(XRD), infrared spectrum (IR), scanning electron microscope (SEM),
transmission electron microscopy (TEM) and UV-visible spectrum
(Figures 22 and 23). Using this method CuO nanoparticle could be
synthesized without using organic solvent, expensive raw materials
and complicated equipments. Besides simplicity, the advantage of
producing nanoparticles by this method is that it is easeful, flexible,
fast, cost effective, and pollution free.
Devi HS, et al. this work is to report an environmental benign
route for the fabrication of copper oxide nanoparticles using Centella
asiatica (L.) leaves extracts at room temperature [28]. This method
is completely a green method, free from toxic and harmful solvent.
Copper oxide particles such prepared are in nanoscale and there
morphology and size are characterized using SEM, UV-Visible
spectroscopy, IR spectroscopy and EDX. Copper oxide nanoparticles
synthesized by this method can be used for the photo catalytic
degradation of methyl orange. These nanoparticles can reduce
methyl orange to its leuco form in aqueous medium in the absent of
reducing agents. It is more economy as compare to other methods.
This catalytic effect of copper oxide nanoparticles can be contributed
to its small size. Nanoparticles have many active sites as compared to
the bulk materials because of its large surface to volume ratio. Copper
oxide nanoparticles such prepared has good catalytic properties.
Ahamed M, et al. it describes the structural and antimicrobial
properties of copper oxide nanoparticles (CuO nanoparticles)
synthesized by a very simple precipitation technique [29]. Copper
(II) acetate was used as a precursor and sodium hydroxide as a
reducing agent. X-ray diffraction patter (XRD) pattern showed the
crystalline nature of CuO nanoparticles. Field emission scanning
electron microscope (FESEM) and field emission transmission
electron microscope (FETEM) demonstrated the morphology of
CuO nanoparticles. The average diameter of CuO nanoparticles
calculated by TEM and XRD was around 23 nm. Energy dispersive
X-ray spectroscopy (EDS) spectrum and XRD pattern suggested
that prepared CuO nanoparticles were highly pure (Figure 24). CuO
nanoparticles showed excellent antimicrobial activity against various
bacterial strains (Escherichia coli, Pseudomonas aeruginosa, Klebsiella
pneumonia, Enterococcus faecalis, Shigella flexneri, Salmonella
typhimurium, Proteus vulgaris, and Staphylococcus aureus).
Moreover, E. coli and E. faecalis exhibited the highest sensitivity
to CuO nanoparticles while K. pneumonia was the least sensitive.
Possible mechanisms of antimicrobial activity of CuO nanoparticles
should be further investigated.
Shaffiey SF, et al. CuO is one of the most important transition
metal oxides due to its captivating properties [30]. It is used in
various technological applications such as high critical temperature
superconductors, gas sensors, in photoconductive applications,
and so on. Recently, it has been used as an antimicrobial agent
against various bacterial species. Materials and methods: Here, we
synthesized CuO nanoparticles and explored the antibacterial activity
of CuO preparation. Results: Single crystalline nanoparticles of
copper oxide having almost uniform particle size of 5-6 nm has been
Figure 22: TEM images of CuO nanoparticles.
Figure 23: SEM image of CuO nanoparticles.
Figure 24: XRD and EDS profile of CuO nanoparticles and inset shows high
resolution TEM of the same.
synthesized by a facile and versatile route. XRD spectra confirmed the
formation of single phase CuO nanoparticles. Transmission electron
microscopy results corroborate well with XRD results. The technique
employed is free from toxic solvents, organics and amines, is based
on a simple reaction of copper sulfate and de-ionized water (DI), and
their bactericidal effects against of Aeromonas hydrophila ATCC
7966T bacteria were investigated. Minimum inhibitory concentration
(MIC) and minimum bactericidal concentration (MBC) with liquid
culture for all of the Aeromonas hydrophila culture medias was done.
Conclusion: Present study confirms that Copper oxide nanoparticles
have great promise as antimicrobial agent against Aeromonas
hydrophila.
Gondal MA, et al. pulsed laser ablation in liquids is a simple
7. Citation: Singh J, Kaur G, Rawat M. A Brief Review on Synthesis and Characterization of Copper Oxide Nanoparticles and its Applications. J
Bioelectron Nanotechnol 2016;1(1): 9.
J Bioelectron Nanotechnol 1(1): 9 (2016) Page - 07
Figure 25: FESEM image and photoluminescence emission spectra of
prepared sample.
Figure 26: HRTEM images of CuO prepared at different molar ratios of Cu2+/
OH- (a) 1/4; (b) 1/5.
Figure 27: (a) Surface profiles of sintered copper film. (b) SEM images of the
cross-section of the sintered films.
synthesis process of nanoparticles for the production of high purity
material with no need for any expensive instrumentation except laser
[31]. The 532 nm wavelength laser beam with 5 ns pulse width and
10 Hz repetition rate was an ablating laser source. In order to control
the size and stoichiometry of the nano particles, the laser ablation
was done in the presence of 9% of H2
O2
. The optical properties
and structure of the prepared samples were studied using different
analytical techniques, such as energy dispersive X-ray spectroscope
(EDS),X-rayDiffraction,UV-Visibleabsorption,Photoluminescence,
FT-IR. In order to study the morphology of the prepared nano-sized
powders, Field Emission Scanning Electron Microscope was used.
From the above analytical studies it was found that the particle size
was between 13 and 28 nanometer, while the band gap energy was
estimated to be 2.46 eV (Figure 25).
Wua R, et al. In this paper, highly dispersed copper oxide
(CuO) nanoparticles with different size and morphology have been
successfully prepared by a quick-precipitation method in DMAC-
water mixed solvent [32]. The as-prepared CuO nanoparticles were
characterized by high resolution transmission electron microscopy
(HRTEM) and x-ray diffraction (XRD) (Figure 26). Several kinds of
CuO particles with different morphology were obtained including
panicle-shaped, spherical-shaped, spindly-shaped and rod-shaped
CuO particles. The effects of processing parameters on the size and
shape of CuO particles such as volume ratio of DMAC/water, adding
temperature of NaOH and molar ratio of were investigated. The
nucleation and growth kinetic of the resulting CuO particles were
also discussed.
Deng D, et al. copper nanoparticles are alternative for silver
and gold nanoparticles which are currently used in inkjet printing
of conductive patterns because of the low price and high electrical
conductivity [33]. However, the serious impediment to using copper
nanoparticles for conductive inks is their spontaneous oxidation.
In the paper, the well-dispersed anti oxidative copper pastes were
prepared by dispersing the nanoparticles in an ethanol solution of
lactic acid, and then deposited on glass slides. The resistivity of
conductive copper films was lAx10-5
n·cm after annealing at 200 °C
for 30 min. It was experimentally proved that lactic acid could react
with the copper oxides surrounding Cu to form copper carboxylate,
which was then reduced to Cu after annealing at 200 °C under
nitrogen atmosphere. Furthermore, the copper film after annealing at
200 °C for 30 min under nitrogen atmosphere showed anti oxidative
characteristic (Figure 27).
Waichal RP, et al. Cuprous oxide (Cu2
O) nanoparticles with size
of about 32 nm are synthesized via electrochemical method in NaCl
solution with copper electrodes and K2
Cr2
O7
as an additive [34].
Different techniques such as scanning electron microscopy (SEM),
energy dispersive x-ray analysis (EDAX), x-ray Diffraction (XRD),
transmission electron microscopy (TEM) and electron spectroscopy
for chemical analysis (ESCA) are used for sample characterization. A
universal miniature furnace is designed and developed for gas sensing
application. It is made with alumina (Al2
O3
) tube with 0.5 mm inner
diameter, 1 mm outer diameter and 1 cm length and has capacity to
reach up to 3500 C. Calibration of bed/furnace is done with Keithley
2400 C source meter with Lab tracer 2.0 software. Cu2
O nanoparticle
coating (thickness around 10 microns) is formed on the surface
of the miniature alumina furnace, with thin platinum wire used
as electrode. The current Vs. % RH of P type Cu2
O exhibits linear
change in current from 3.83 X 10-7
to 2.62 X10-7
Amps for a relative
humidity change from 11 to 84% RH, respectively.
Park JC, et al. in this paper, synthesis of uniform Cu2
O nanocubes
in a gram scale [35]. The controlled oxidation of Cu2
O nanocubes
yielded CuO hollow cubes, hollow spheres, and urchin-like particles,
through a sequential dissolution-precipitation process. The CuO
urchin-like particles exhibited excellent electrochemical performance
for lithium-ion batteries, superior to that of the other nanostructures.
It is anticipated that precise control of the morphology of metal oxide
nanoparticles would serve to maximize the performance of lithium-
ion batteries. Experiments with different metal oxides, such as FeO,
CoO, and Co3
O4
, are in progress toward this goal (Figure 28).
Rout L, et al. this paper describes the CS cross coupling of thiols
with iodobenzene in the presence of relatively inexpensive air stable
CuO nanoparticles [36]. A variety of thiols could be cross-coupled
with iodobenzene in this simple and efficient reaction to give the
desired products in high yields.
Etefagh R, et al. copper oxide (CuO) nanoparticles and nanolayers
were synthesized by sol-gel and spray pyrolysis methods, respectively
[37]. The structure and morphology of the prepared samples were
characterized using XRD, SEM and TEM analysis. Aspergillus niger
fungi were grown in an appropriate medium and exposed to the
synthesized samples in a closed glass vessel. The boisoning properties
of the nanosystems were investigated by measuring their electrical
resistance at regular time intervals and different temperatures.
8. Citation: Singh J, Kaur G, Rawat M. A Brief Review on Synthesis and Characterization of Copper Oxide Nanoparticles and its Applications. J
Bioelectron Nanotechnol 2016;1(1): 9.
J Bioelectron Nanotechnol 1(1): 9 (2016) Page - 08
Further studies were made on the effects of CO2
and humidity on
the sensing properties, using CaCO3
and Silica gel. The considerable
changes observed in the electrical resistance of the prepared samples,
in the presence of Aspergillus niger fungi, support our proposed
system as a biosensor.
Phiwdanga K, et al. CuO nanoparticles were synthesized
by precipitation method using different precursors as copper
nitrate (Cu(NO3
)2
) and copper chloride (CuCl2
) with post-heating
comparing between as-synthesized and after calcinations [38].
Relevant properties of as-synthesized nanoparticles were investigated
by X-ray diffraction (XRD), scanning electron microscope (SEM) and
Fourier Transform Infrared (FTIR) Spectroscopy (Figure 29). Overall
results suggest that the formation of CuO nanostructures with
different shape, size and morphology can be achieved using different
precursors via this process. The improvement in their crystallinity
and purification can be further attained by post calcinations process.
Lo1 CH, et al. the optimal parameters are found for preparing
nanofluid in our submerged arc nanoparticle synthesis system
(SANSS) using a copper electrode [39]. A suspended copper oxide
nanofluid is thus produced at the current of 8.5-10 A, voltage of 220
V, pulse duration of 12l s, and dielectric liquid temperature of 2 °C.
The CuO nanoparticle are characterized by transmission electron
microscopy (TEM), field emission scanning electron microscope
(FESEM), X-ray diffraction (XRD), electron diffraction pattern (SAD)
and electron spectroscopy for chemical analysis (ESCA). The equality
volume spherical diameter of the obtained copper oxide particle is
49.1 nm, regular shape and narrow size distribution (Figure 30).
Yao WT, et al. uniform and monodisperse CuO nanorods have
been synthesized by directional aggregation and crystallization of
tiny CuO nanoparticles generated from a solid-liquid arc discharge
process under ambient conditions in the absence of any surfactants
[40]. Uniform CuO nanorods with sharp ends are formed from tiny
nanoparticles via a process that involves the rapid oxidation of Cu
nanoclusters, the spontaneous aggregation of CuO nanoparticles,
and the Ostwald ripening process. The spontaneous aggregation and
oriented attachment of tiny CuO nanoparticles contributed obviously
to the formation of these kinds of nanostructures. By choice of
suitable reducing agent to prevent the oxidation of Cu nanoclusters,
Cu and Cu2
O nanoparticles can be selectively synthesized (Figure 31).
Conclusion
The key applications of copper oxide nanoparticles are as follows:
• As burning rate catalyst in rocket propellant. It can greatly
improve the homogeneous propellant burning rate, lower
pressure index, and also perform better as a catalyst for the
AP composite propellant.
• Can be applied to the catalyst, superconducting materials,
thermoelectric materials, sensing materials, glass, ceramics
and other fields.
• As ceramic resistors, magnetic storage media, gas sensors,
near-infrared tilters, photoconductive and photo thermal
applications.
• As semiconductors, solar energy transformation, and high-
tech superconductors.
References
1. Guajardo-Pachecoa MJ, Morales-Sanchz JE, González-Hernándezc J, Ruiz
F (2010) Synthesis of copper nanoparticles using soybeans as a chelant
agent. Mater Lett 64: 1361-1364.
Figure 30: Effect of electric current on the mean secondary particle size and
the standard deviations.
Figure 31: Illustration of the selective synthesis of CuO, Cu2O, and Cu
nanoparticles by the SLPAD method.
Figure 28: Overall synthetic scheme of Cu2O nanocubes and CuO
nanostructures.
(a) (b)
Figure 29: (a) XRD pattern of CuO nanoparticles. (b) XRD pattern of CuO
nanolayer.
9. Citation: Singh J, Kaur G, Rawat M. A Brief Review on Synthesis and Characterization of Copper Oxide Nanoparticles and its Applications. J
Bioelectron Nanotechnol 2016;1(1): 9.
J Bioelectron Nanotechnol 1(1): 9 (2016) Page - 09
2. Xi Y, Hu C, Gao P, Yang R, He X, et al. (2010) Morphology and phase
selective synthesis of Cux
O (x = 1, 2) nanostructures and their catalytic
degradation activity. Mater Sci Eng B 166: 113-117.
3. He Y (2007) A novel solid-stabilized emulsion approach to CuO nanostructures
microspheres. Mater Res Bull 42: 190-195.
4. Motogoshi R, Oku T, Suzuki A, Kikuchi K, Kikuchi S, et al. (2010) Fabrication
and characterization of cupprious oxide: fullerene solar cells. Synth Met 160:
1219-1222.
5. Mustafa G, Tahir H, Sultan M, Akhtar N (2013) Synthesis and characterization
of cupric oxide (CuO) nanoparticles and their application for the removal of
dyes12: 6650-6660.
6. Suleiman M, Mousa M, Hussein A, Hammouti B, Hadda TB, et al. (2013)
Copper(II)-Oxide nanostructures: synthesis, characterizations and their
applications-review. J Mater Environ Sci 4: 792-797.
7. Aparna Y, Rao KV, Subbarao PS (2012) Synthesis and characterization of
cuo nano particles by novel sol-gel method. IPCBEE 48: 156-160.
8. Abboud Y, Saffaj T, Chagraoui A, Bouari AE, Brouzi K, et al. (2014)
Biosynthesis, characterization and antimicrobial activity of copper oxide
nanoparticles (CONPs) produced using brown alga extract (Bifurcaria
bifurcata). Appl Nanosci 4: 571-576.
9. Lanje AS, Sharma SJ, Pode RB, Ningthoujam RS (2010) Synthesis and
optical characterization of copper oxide nanoparticles. Adv Appl Sci Res 1:
36-40.
10. Volanti DP, Keyson D, Cavalcante LS, Simões AZ, Joya MR, et al. (2008)
Synthesis and characterization of CuO flower-nanostructure processing by a
domestic hydrothermal microwave. J Alloys Comp 459: 537-542.
11. Sahay R, Sundaramurthy J, Kumar PS, Thavasi V, Mhaisalkar SG, et al.
(2012) Synthesis and characterization of CuO nanofibers, and investigation
for its suitability as blocking layer in ZnO NPs based dye sensitized solar cell
and as photocatalyst in organic dye degradation. J Solid State Chem 186:
261-267.
12. Wongpisutpaisan N, Charoonsuk P, Vittayakorn N, Pecharapa W (2011)
Sonochemical synthesis and characterization of copper oxide nanoparticles.
Energy Procedia 9: 404-409.
13. Ghane M, Sadeghi B, Jafari AR, Pakenjhad AR (2010) Synthesis
and characterization of a Bi-Oxide nanoparticle ZnO/CuO by thermal
decomposition of oxalate precursor method. Int J Nano Dim 1: 33-40.
14. Ethiraj AS, Kang DJ (2012) Synthesis and characterization of CuO nanowires
by a simple wet chemical method. Nanoscale Res Lett 7: 70.
15. Mousa MK (2015) Wastewater disinfection by synthesized copper oxide
nanoparticles stabilized with surfactant. J Mater Environ Sci 6: 1924-1937.
16. Nasibulin AG, Ahonen PP, Richard O, Kauppinen EI, Altman IS (2001) Copper
and copper oxide nanoparticle formation by chemical vapor nucleation from
copper (II) acetylacetonate. J Nanopart Res 3: 383-498.
17. Zhu H, Han D, Meng Z, Wu D, Zhang C (2011) Preparation and thermal
conductivity of CuO nanofluid via a wet chemical method. Nanoscale Res
Lett 6: 181.
18. Kannaki K, Ramesh PS, Geetha D (2012) Hydrothermal synthesis of CuO
nanostructure and their characterizations. Int J Sci Eng Res 3: 1-4.
19. Darezereshki E, Bakhtiari F (2011) A novel technique to synthesis of tenorite
(CuO) nanoparticles from low concentration CuSO4
solution. J Min Metall B
Metall 47: 73-78.
20. Srivastava S, Kumar M, Agrawal A, Dwivedi SK (2013) Synthesis and
characterisation of copper oxide nanoparticles. IOSR J Appl Phys 5: 61-65.
21. Ayask HK, Khaki JV, Sabzevar MH (2015) Facile synthesis of copper oxide
nanoparticles using copper hydroxide by mechanochemical process. J
Ultrafine Grained Nanostruct Mater 48: 37-44.
22. Nithya K, Yuvasree P, Neelakandeswari N, Rajasekaran N, Uthayarani K, et
al. (2014) Preparation and characterization of copper oxide nanoparticles. Int
J Chem Tech Res 6: 2220-2222.
23. Karthik AD, Kannappan G (2013) Synthesis of copper precursor, copper
and its oxide nanoparticles by green chemical reduction method and its
antimicrobial activity. J Appl Pharm Sci 3: 016-021.
24. Shah MA, Al-Ghamdi MS (2011) Preparation of copper (Cu) and copper oxide
(Cu2
O) nanoparticles under supercritical conditions. Mater Sci Appl 2: 977-
980.
25. Jayalakshmi, Yogamoorthi A (2014) Green synthesis of copper oxide
nanoparticles using aqueous extract of flowers of Cassia alata and particles
characterisation. Int J Nanomater Bios 4: 66-71.
26. Rani R, Kumar H, Salar RK, Purewal SS (2014) Antibacterial activity of copper
oxide nanoparticles against gram-negative bacterial strain synthesized by
reverse micelle technique. Int J Pharm Res Dev 6: 72 -78.
27. Radhakrishnan AA, Beena BB (2014) Structural and optical absorption
analysis of CuO nanoparticles. Indian J Adv Chem Sci 2: 158-161.
28. Devi HS, Singh TD (2014) Synthesis of copper oxide nanoparticles by a novel
method and its application in the degradation of methyl orange. Adv Electron
Electric Eng 4: 83-88.
29. Ahamed M, Alhadlaq HA, Khan MA, Karuppiah P, Al-Dhabi NA (2014)
Synthesis, characterization, and antimicrobial activity of copper oxide
nanoparticles. J Nanomater 2014: 4.
30. Shaffiey SF, Shapoori M, Bozorgnia A, Ahmadi M (2013) Synthesis and
evaluation of bactericidal properties of CuO nanoparticles against Aeromonas
hydrophila. Nanomed J 1: 198-204.
31. Gondal MA, Qahtan TF, Dastageer MA, Saleh TA, Maganda YW (2013)
Synthesis and characterization of copper oxides nanoparticles via pulsed
laser ablation in liquid. High Capacity Optical Networks and Emerging/
Enabling Technologies, Magosa, pp. 146-150.
32. Wua R, Zhenye Ma, Zhenggui Gua, Yan Yang (2010) Preparation
and characterization of CuO nanoparticles with different size and
morphology. Mechanic Automation and Control Engineering (MACE), 2010
International Conference on, Wuhan, pp. 3183-3186.
33. Deng D, Qi T, Chen Y, Jin Y, Xiao F (2012) Preparation of antioxidative
nano copper pastes for printed electronics application. Electronic Packaging
Technology and High Density Packaging (ICEPT-HDP), 2012 13th
International Conference on, Guilin, pp. 250-253.
34. Waichal RP, Karvir GD, Patil KR, Ambekar P, Mulla IS, et al. (2012) Synthesis
of cuprous oxide nanoparticles by electrochemical method and evaluation
of the corresponding nanoparticle film for humidity sensing. Physics and
Technology of Sensors (ISPTS), 2012 1st International Symposium on, Pune,
India, pp. 47-50.
35. Park JC, Kim J, Kwon H, Song H (2009) Gram-scale synthesis of Cu2
O
nanocubes and subsequent oxidation to CuO hollow nanostructures for
lithium-ion battery anode materials. Adv Mater 21: 803-807.
36. Rout L, Sen TK, Punniyamurthy T, (2007) Recent advances in copper-
catalyzed C-S cross-coupling reactions. Angew Chem 46: 5583-5586.
37. Etefagh R, Azhir E, Shahtahmasebi N (20113) Synthesis of CuO nanoparticles
and fabrication of nanostructural layer biosensors for detecting Aspergillus
niger fungi. Scientia Iranica 20: 1055-1058.
38. Phiwdang K, Suphankij S, Mekprasart W, Pecharapa W (2013) Synthesis of
CuO nanoparticles by precipitation method using different precursors. Energy
Procedia 34: 740-745.
39. Lo CH, Tsung TT, Chen LC, Su CH, Lin HM (2005) Fabrication of copper oxide
nanofluid using submerged arc nanoparticle synthesis system (SANSS). J
Nanopart Res 7: 313-320.
40. Yao WT, Yu SH, Zhou Y, Jiang J, Wu QS, et al. (2005) Formation of uniform
CuO nanorods by spontaneous aggregation: selective synthesis of CuO,
Cu2
O, and Cu nanoparticles by a solid-liquid phase arc discharge process. J
Phys Chem B 109: 14011-14016.