This document summarizes a study that characterized silver nanoparticles biosynthesized using Ficus religiosa plant leaf extract. Silver nanoparticles were synthesized by adding Ficus religiosa leaf extract to silver nitrate solution, indicated by a color change from green to brown. The nanoparticles were characterized using UV-visible spectroscopy, XRD analysis, FTIR spectroscopy, and SEM analysis. UV-visible spectroscopy showed a peak at 424nm confirming nanoparticle synthesis. XRD analysis revealed the crystalline nature of the nanoparticles. FTIR confirmed the presence of functional groups that may stabilize the nanoparticles. SEM analysis showed the nanoparticles were spherical in morphology.
In the present work, green synthesis of copper oxide nanoparticles has wide interest due to its inherent features such as eco-friendly and low costs. Here we propose a cost effective and eco-friendly green synthesis of copper oxide nanoparticles using aloe barbadensis and copper acetate. Aloe barbadensis has antioxidant property that helps in the formation of nanoparticles. Aloe barbadensis extract was obtained by heating it in distilled water and mixed to copper acetate to form copper oxide nanoparticles. The synthesised nanoparticles were analysed using UV-Visible spectroscopy, X-ray diffraction studies (XRD) and Fourier-transform infrared spectroscopy (FTIR).
Green synthesis, Characterization and anti microbial activity of silver nano ...IJERA Editor
The exploitation of various plant materials for the biosynthesis of silver nano particles is considered a green
technology. Because it does not involve any harmful chemicals. Nanotechnology field is one of the most
attractive researches. The field of nanotechnology is applied to bio materials. This review focuses on the green
synthesis of silver nanoparticles using various plant sources. A detailed study on the reduction of silver ions to
silver nanoparticles from medical plant leaves extract were demonstrated with a brief experimental procedure.
Characterization of the synthesized nanoparticles performed through UV spectroscopy, Fourier Transform Infra
Red spectroscopy analysis, X-Ray Diffraction analysis, Scanning Electron Microscopy and Transmission
Electron Microscopy. This review mainly focus on anti microbial activities of synthesized silver nano particles.
Silver Nanoparticles Synthesis, Properties, Applications and Future Perspecti...iosrjce
Silver nanoparticles (Ag NPs) have gained significant interest due to their unique optical,
antimicrobial, electrical, physical properties and their possible application. The change of energy level from
continuous band to discrete band of Ag NPs with decrease in size of particles gives strong size dependent
chemical and physical properties. Ag NPs show lower toxicity to human health while Ag NPs show higher
toxicity to various micro-organisms. For this reason Ag NPs having scope for medical instruments,
antimicrobial application, products for health care such as scaffolds, burn dressing, water purification,
agriculture uses. Ag NPs can be synthesized by using various methods which is primarily classified into two
type’s namely physical process which includes laser ablation, condensation, evaporation etc. and chemical
process which includes hydrazine, sodium borohydride, green synthesis etc. Among all these methods green
synthesis is non-toxic, eco-friendly and cost effective. In this review paper different synthesis process especially
green synthesis, properties, applications of silver nanoparticles and their recent advances are described. We
also highlight the toxicity and compares Ag NPs with others nanoparticles.
In the present work, green synthesis of copper oxide nanoparticles has wide interest due to its inherent features such as eco-friendly and low costs. Here we propose a cost effective and eco-friendly green synthesis of copper oxide nanoparticles using aloe barbadensis and copper acetate. Aloe barbadensis has antioxidant property that helps in the formation of nanoparticles. Aloe barbadensis extract was obtained by heating it in distilled water and mixed to copper acetate to form copper oxide nanoparticles. The synthesised nanoparticles were analysed using UV-Visible spectroscopy, X-ray diffraction studies (XRD) and Fourier-transform infrared spectroscopy (FTIR).
Green synthesis, Characterization and anti microbial activity of silver nano ...IJERA Editor
The exploitation of various plant materials for the biosynthesis of silver nano particles is considered a green
technology. Because it does not involve any harmful chemicals. Nanotechnology field is one of the most
attractive researches. The field of nanotechnology is applied to bio materials. This review focuses on the green
synthesis of silver nanoparticles using various plant sources. A detailed study on the reduction of silver ions to
silver nanoparticles from medical plant leaves extract were demonstrated with a brief experimental procedure.
Characterization of the synthesized nanoparticles performed through UV spectroscopy, Fourier Transform Infra
Red spectroscopy analysis, X-Ray Diffraction analysis, Scanning Electron Microscopy and Transmission
Electron Microscopy. This review mainly focus on anti microbial activities of synthesized silver nano particles.
Silver Nanoparticles Synthesis, Properties, Applications and Future Perspecti...iosrjce
Silver nanoparticles (Ag NPs) have gained significant interest due to their unique optical,
antimicrobial, electrical, physical properties and their possible application. The change of energy level from
continuous band to discrete band of Ag NPs with decrease in size of particles gives strong size dependent
chemical and physical properties. Ag NPs show lower toxicity to human health while Ag NPs show higher
toxicity to various micro-organisms. For this reason Ag NPs having scope for medical instruments,
antimicrobial application, products for health care such as scaffolds, burn dressing, water purification,
agriculture uses. Ag NPs can be synthesized by using various methods which is primarily classified into two
type’s namely physical process which includes laser ablation, condensation, evaporation etc. and chemical
process which includes hydrazine, sodium borohydride, green synthesis etc. Among all these methods green
synthesis is non-toxic, eco-friendly and cost effective. In this review paper different synthesis process especially
green synthesis, properties, applications of silver nanoparticles and their recent advances are described. We
also highlight the toxicity and compares Ag NPs with others nanoparticles.
Biosynthesis and characterization of silver nanoparticles using ficus benghal...eSAT Publishing House
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology
A convenient method of synthesizing Silver Nanoparticles form Bonatea steudneri leave extract and evaluation of their electrocatalytic and phenol removal properties.
Green biosynthesis of silver nanoparticles using Clitoria ternatea and its ch...ESHIT BANERJEE
Extraction of aqueous extract from Clitoria ternatea and using the aqueous extract for the biosynthesis of silver nanoparticles. Statistical analysis of the aqueous extract using Ultraviolet-visible spectroscopy. And morphological analysis using FE-SEM .And further analysis using XRD to determine the element composition of the sample
Invitro Assessment of Antibacterial and Antioxidant Property of Biofabricated...ijtsrd
Biosynthesis of silver nanoparticles is an eye catching area of a modern research field. It is simple, single step, non toxic and eco friendly method. In the present investigation, the aqueous extract of Bauhinia tomentosa is used to synthesise silver nanoparticles and it was confirmed by UV Visible spectrometer. Due to surface Plasmon resonance, the peak obtained at 440.0 nm. The functional group present at the surface of the silver nanoparticles was confirmed by FT IR analysis. Further, the synthesized silver nanoparticles were subjected to antibacterial activity by Well diffusion method and also antioxidant activity performed by hydrogen peroxide scavenging assay. As concentration of silver nanoparticles increases the bactericidal activity is raised and also the antioxidant activity is increased. Thus it reveals that due to presence of various bioactive compounds present in the plant extract acting as reducing agent to reduce the size of silver ions into silver nanoparticles. Therefore, the biosynthesized nanoparticles is utilized for various biomedical applications. Mohanapriya. P ""Invitro Assessment of Antibacterial and Antioxidant Property of Biofabricated Silver Nanoparticles using Aqueous Extract of Bauhinia Tomentosa"" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-3 | Issue-3 , April 2019, URL: https://www.ijtsrd.com/papers/ijtsrd22780.pdf
Paper URL: https://www.ijtsrd.com/engineering/nano-technology-/22780/invitro-assessment-of-antibacterial-and-antioxidant-property-of-biofabricated-silver-nanoparticles-using-aqueous-extract-of-bauhinia-tomentosa/mohanapriya-p
Chemo bio synthesis of silver nanoparticlesJagpreet Singh
Silver nanoparticles have a lot of ways of synthesis like physical and chemical
methods; some of these methods use a lot of chemical substances and are
very hazardous for humans and environment, so a novel, great, environmental
friendly, cheap and easy to use world of green chemistry has been used. A
number of characterization techniques such as UV-visible spectroscopy, Fourier
transformation infrared spectroscopy, X-ray diffraction study and scanning
electron microscopy revealed that silver nanoparticles have been used. Thus
the different response of the functional groups and the difference in the peaks
and UV-visible data was studied and then compared to understand and know
the way these different reducing agents react to the same starting material. The
green synthesis had a UV-visible peak at 446 nm while the one with chemical
synthesis had a peak at 395 nm. FTIR results of silver nanoparticles synthesis
by trisodium citrate (TSC) showed a peak at 1505 cm-1 which shows that the
compound has a stretching of the -C=C – bond. In another case, which was done
by using Sodium borohydride (NaBH4) a peak at 1695 cm-1 showed a –C=O- bond
indicating stretching and a weak absorption intensity. Another peak was present
which indicates a –O-H bond formation and presence which is a strong bond are
found to exist. A notable peak came for synthesis by orange peel at 1517 cm-1
which represents a –C=C- bond stretching as in aromatic compounds. Another
peak at 1732 cm-1 indicates the –C=O- bond. The XRD results on one of the
silver sample prepared by green methods showed silver nanomaterials formed
which had a average particle size of around 42 nm. FE-SEM results revealed that
silver nanomaterials were formed and had a flake like appearance in one of the
results. All the overall comparison showed that different modes of synthesis
of silver nanomaterials and different reducing agents give same materials but
with different peaks and intensities. All this data provided knowledge about the
fact that an alternative method can be used to create new nanoparticles if one
of the previously considered to tried method fails thus helping in extending the
broadways for research.
Synthesis and characterization of Silver NanoparticlesIJMERJOURNAL
ABSTRACT: Different methods may be used to produce nanoparticles, for instance in 1951 Turkevich and co-workers proposed that gold nanoparticles can be produced from the reaction of trisodum citrate, which acts as a stabilizing and reducing agent, with chloroauric acid, the source of gold nanoparticles. By changing chloroauric acid to silver nitrate, silver nanoparticles can instead be produced. Despite being widely used, there is a debate in the literature on the way the reagents and conditions, used for the Turkevich method, affect the size and shape of the silver nanoparticles produced. In view of this, silver nanoparticles have been synthesised through the Turkevich method using different reaction conditions, namely the reaction temperature and concentration of sodium citrate used. Characterisation techniques were then used to determine the size and shape of the silver nanoparticles produced. It was found that increasing the temperature increased the size of the nanoparticles through SEM, although DLS showed the opposite trend. Furthermore, at higher temperatures the formation of rod-like particles could be observed, as opposed to more spherical particles at lower temperatures.
Plant Mediated Synthesis of ZnO and Mn Doped ZnO Nanoparticles Using Carica P...IIJSRJournal
In this work, Zinc Oxide (ZnO) and Mn-doped ZnO nanoparticles were green synthesized using Carica papaya extract by the Co-precipitation method. X-ray diffraction (XRD) results revealed the formation of ZnO and Mn-doped ZnO nanoparticles with the wurtzite crystal structure (hexagonal). Due to the presence of dopant Manganese (Mn) the optical spectra showed a redshift in the absorbance spectrum. Structural and optical properties of the end product showed that the manganese ions (Mn2+) substituted the Zinc ions (Zn2+) without altering the Wurtzite structure of ZnO. Fourier Transform Infrared Spectroscopy (FTIR) spectra confirm the presence of metal oxide present in the end product. The antibacterial efficiency of ZnO and Mn-doped ZnO nanoparticles were studied using the agar well diffusion method against Gram-positive and Gram–negative bacteria. It is obvious from the results that Mn doped ZnO nanoparticles exhibit better antibacterial activity than ZnO nanoparticles.
The current research aimed at fabricating plant extract mediated biosynthesized silver nanoparticles (AgNPs) utilizing thorn extract of Bombax ceiba (TEBC). The synthesized AgNPs was characterized by UV spectroscopy where the surface plasmonic resonance peak (SPR) was located at 222 nm. The scanning electron microscopy (SEM) studies demonstrated that the morphology of fabricated nanomaterials was primarily cylindrical of average size of 20-30 nm with some spindles of size >50 nm. The anti-microbial evaluation against Staphylococcus aureus revealed that AgNPs exhibited notable activity with ZOI of 27.2 mm at MIC of 25 μg/mL. The outcome of this research evidently signified that the biofabricated AgNPs using TEBC may be a new greener approach or technology to formulate anti-bacterial nanodrugs in future.
Abstract
A rapid advance of nanotechnology has the potential approach for significant improvements in disease prevention, diagnosis and treatment. In this article, we report a simple and eco-friendly biosynthesis of silver nanoparticles (Ag-NPs) using silver nitrate as metal precursor in Curcuma longa. These Ag-NPs were characterized by UV–vis spectroscopy, and Transmission electron microscopy (TEM). These nanoparticles exhibited maximum absorbance in specific nano meter range in UV–vis spectroscopy. TEM micrographs revealed the formation of well-dispersed Ag-NPs with its size and morphology. Microbiology assay founds that Ag-NPs are effective against V.cholera bacteria. These developments raise exciting opportunities to diagnose and treat pathogenic mode of infection based on the various profiles to target diseases.
Plant Mediated Synthesis of Silver Nanoparticles by Using Dried Stem Powder o...IJERA Editor
The Tinospora Crispa is an important medicinal plant to synthesize silver Nanoparticles provides environmentally benign and a feasible alternative to the most of the chemical, physical and biological methods. Utilizing the reduced property of Tinospora Crispa dried stem powder from 1mM aqueous silver nitrate, the average size of 40nm silver nanoparticles were synthesized at room temperature. The stem powder extracts mixed with silver nitrate showed a gradual change in the color of the extracts from yellow to dark brown. The formation of silver nanoparticles was confirmed by UV-Visible spectrophotometer, X-Ray diffraction (XRD), Fourier transform infrared (FTIR), Energy dispersive spectroscopy (EDAX) and Transmission electron microscopy (TEM). The photoluminescence studies of silver nanoparticles shows that they are efficient fluorescence emitting probes.
Nowadays synthesis of nanomaterials by using bio-root is limelight of modern nanotechnology. In the present investigation, we have isolated four strains viz: KFRI 330 (A), KFRI 332 (B), KFRI 351 (C) and KFRI 352 (D) of Beauveria bassiana from the forest soils in Kerala. Spore count was tested for all the strains of B. bassiana stored in the laboratory. Silver nanoparticles were synthesized from the four strains of B. bassiana and the formation of nanoparticles was observed within 48 hours. The synthesized silver nanoparticle has been characterized by UV-Vis spectroscopy, FT-IR and TEM analysis. The appearance of UV-Vis Peak (SPR 440 nm) revealed the reduction of silver metal ions to silver nanoparticles by using the fungal strains. The possible bio-molecules involved in nanoparticles synthesis was identified by HPLC analysis. The functional groups involved in the silver nanoparticles synthesis were identified. The amide group is responsible for the synthesis of silver nanoparticles. From the TEM analysis, the size of the AGNPs has been measured as 4-70 nm (mean 10.7±0.04 nm). It was evident from the HPLC result that primary amines act on capping as a well as a stabilizing agent.
BIOSYNTHESIS AND CHARACTERIZATION OF ZINC OXIDE NANOPARTICLE USING FICUS RELI...Arvind Singh Heer
The objective of this study is to synthesize zinc oxide nanostructures
with the most practical ways by using Ficus Religiosa leaves extract
and characterize the nanostructures. ZnO nanoparticles were
synthesized using Zinc Nitrate (Zn(NO3)2) as a precursor and Ficus
Religiosa leaves extract solvent and distilled water were used as
medium. ZnO nanoparticles were characterized by using XRD, UVVisible
spectroscopy, EDX and SEM, FTIR. Result of EDX
characterization shows that the ZnO nanoparticles has good purity with
(Zinc content of- 72.48% and; Oxygen content of- 27.52%). XRD
result spectrum displays mainly oxygen and zinc peaks, which indicate
the crystallinity in nature as exhibited. SEM micrographs shows that
synthesized ZnO have a cubical structure. The obtained ZnO
nanoparticles are homogenous and consistent in size which corresponds to the XRD result
that exhibit good crystallinity.
Green synthesis of silver nanoparticles using stem extract of Berberis arista...Soma Santra
Plant-mediated synthesis of nanoparticles has been an emerging research area worldwide for its inherent features such as rapidity, simplicity, environment-friendly, and cost-effectiveness. The rapid and simple approach was used for the synthesis
of silver nanoparticles (AgNPs) (AgNO3) using stem of Berberis aristata (Daruharidra) by biologically reducing AgNO3 with
the aqueous extract of plant. The formation of AgNPs was indicated by the color change from slightly yellowish to yellowishbrown. Various techniques were used to characterize biosynthesized NPs by ultraviolet-visible, Fourier transform infrared, scanning electron microscopy, and transmission electron microscopy analysis. The biosynthesized AgNPs were also tested for antimicrobial activity against pathogenic bacteria such as Escherichia coli and Pseudomonas aeruginosa.
ABSTRACT- In our present study, we account for eco-friendly biosynthesis of copper nanoparticles using aqueous leaves extract of Artocarpus heterophyllus against first to fourth instar larvae of Aedes aegypti. The synthesized CuNPs were characterized by UV, XRD, FTIR and SEM analyses were clearly distinguishable. The four different immature mosquito larval stages of A. aegypti were exposed to varying concentrations of aqueous leaf extract of A. heterophyllus, copper sulphate (CuSO4) and synthesized CuNPs for 24 h. The mortality was observed at aqueous extract (LC50= 48.40, 60.55, 70.36, and 82.79 mg/ml), CuSO4 (LC50=21.81, 26.92, 41.38, and 55.12 mg/ml) synthesized CuNPs against first to fourth instars of A. aegypti (LC50= 3.85, 4.24, 4.66, and 5.08 mg/ml), respectively. The novel properties created not only improve the quality of human’s life; it also helps in saving energy and environment.
Key-words: Copper nanoparticles, Jackfruit, Aedes aegypti, aqueous leaf extract
Biosynthesis and characterization of silver nanoparticles using ficus benghal...eSAT Publishing House
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology
A convenient method of synthesizing Silver Nanoparticles form Bonatea steudneri leave extract and evaluation of their electrocatalytic and phenol removal properties.
Green biosynthesis of silver nanoparticles using Clitoria ternatea and its ch...ESHIT BANERJEE
Extraction of aqueous extract from Clitoria ternatea and using the aqueous extract for the biosynthesis of silver nanoparticles. Statistical analysis of the aqueous extract using Ultraviolet-visible spectroscopy. And morphological analysis using FE-SEM .And further analysis using XRD to determine the element composition of the sample
Invitro Assessment of Antibacterial and Antioxidant Property of Biofabricated...ijtsrd
Biosynthesis of silver nanoparticles is an eye catching area of a modern research field. It is simple, single step, non toxic and eco friendly method. In the present investigation, the aqueous extract of Bauhinia tomentosa is used to synthesise silver nanoparticles and it was confirmed by UV Visible spectrometer. Due to surface Plasmon resonance, the peak obtained at 440.0 nm. The functional group present at the surface of the silver nanoparticles was confirmed by FT IR analysis. Further, the synthesized silver nanoparticles were subjected to antibacterial activity by Well diffusion method and also antioxidant activity performed by hydrogen peroxide scavenging assay. As concentration of silver nanoparticles increases the bactericidal activity is raised and also the antioxidant activity is increased. Thus it reveals that due to presence of various bioactive compounds present in the plant extract acting as reducing agent to reduce the size of silver ions into silver nanoparticles. Therefore, the biosynthesized nanoparticles is utilized for various biomedical applications. Mohanapriya. P ""Invitro Assessment of Antibacterial and Antioxidant Property of Biofabricated Silver Nanoparticles using Aqueous Extract of Bauhinia Tomentosa"" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-3 | Issue-3 , April 2019, URL: https://www.ijtsrd.com/papers/ijtsrd22780.pdf
Paper URL: https://www.ijtsrd.com/engineering/nano-technology-/22780/invitro-assessment-of-antibacterial-and-antioxidant-property-of-biofabricated-silver-nanoparticles-using-aqueous-extract-of-bauhinia-tomentosa/mohanapriya-p
Chemo bio synthesis of silver nanoparticlesJagpreet Singh
Silver nanoparticles have a lot of ways of synthesis like physical and chemical
methods; some of these methods use a lot of chemical substances and are
very hazardous for humans and environment, so a novel, great, environmental
friendly, cheap and easy to use world of green chemistry has been used. A
number of characterization techniques such as UV-visible spectroscopy, Fourier
transformation infrared spectroscopy, X-ray diffraction study and scanning
electron microscopy revealed that silver nanoparticles have been used. Thus
the different response of the functional groups and the difference in the peaks
and UV-visible data was studied and then compared to understand and know
the way these different reducing agents react to the same starting material. The
green synthesis had a UV-visible peak at 446 nm while the one with chemical
synthesis had a peak at 395 nm. FTIR results of silver nanoparticles synthesis
by trisodium citrate (TSC) showed a peak at 1505 cm-1 which shows that the
compound has a stretching of the -C=C – bond. In another case, which was done
by using Sodium borohydride (NaBH4) a peak at 1695 cm-1 showed a –C=O- bond
indicating stretching and a weak absorption intensity. Another peak was present
which indicates a –O-H bond formation and presence which is a strong bond are
found to exist. A notable peak came for synthesis by orange peel at 1517 cm-1
which represents a –C=C- bond stretching as in aromatic compounds. Another
peak at 1732 cm-1 indicates the –C=O- bond. The XRD results on one of the
silver sample prepared by green methods showed silver nanomaterials formed
which had a average particle size of around 42 nm. FE-SEM results revealed that
silver nanomaterials were formed and had a flake like appearance in one of the
results. All the overall comparison showed that different modes of synthesis
of silver nanomaterials and different reducing agents give same materials but
with different peaks and intensities. All this data provided knowledge about the
fact that an alternative method can be used to create new nanoparticles if one
of the previously considered to tried method fails thus helping in extending the
broadways for research.
Synthesis and characterization of Silver NanoparticlesIJMERJOURNAL
ABSTRACT: Different methods may be used to produce nanoparticles, for instance in 1951 Turkevich and co-workers proposed that gold nanoparticles can be produced from the reaction of trisodum citrate, which acts as a stabilizing and reducing agent, with chloroauric acid, the source of gold nanoparticles. By changing chloroauric acid to silver nitrate, silver nanoparticles can instead be produced. Despite being widely used, there is a debate in the literature on the way the reagents and conditions, used for the Turkevich method, affect the size and shape of the silver nanoparticles produced. In view of this, silver nanoparticles have been synthesised through the Turkevich method using different reaction conditions, namely the reaction temperature and concentration of sodium citrate used. Characterisation techniques were then used to determine the size and shape of the silver nanoparticles produced. It was found that increasing the temperature increased the size of the nanoparticles through SEM, although DLS showed the opposite trend. Furthermore, at higher temperatures the formation of rod-like particles could be observed, as opposed to more spherical particles at lower temperatures.
Plant Mediated Synthesis of ZnO and Mn Doped ZnO Nanoparticles Using Carica P...IIJSRJournal
In this work, Zinc Oxide (ZnO) and Mn-doped ZnO nanoparticles were green synthesized using Carica papaya extract by the Co-precipitation method. X-ray diffraction (XRD) results revealed the formation of ZnO and Mn-doped ZnO nanoparticles with the wurtzite crystal structure (hexagonal). Due to the presence of dopant Manganese (Mn) the optical spectra showed a redshift in the absorbance spectrum. Structural and optical properties of the end product showed that the manganese ions (Mn2+) substituted the Zinc ions (Zn2+) without altering the Wurtzite structure of ZnO. Fourier Transform Infrared Spectroscopy (FTIR) spectra confirm the presence of metal oxide present in the end product. The antibacterial efficiency of ZnO and Mn-doped ZnO nanoparticles were studied using the agar well diffusion method against Gram-positive and Gram–negative bacteria. It is obvious from the results that Mn doped ZnO nanoparticles exhibit better antibacterial activity than ZnO nanoparticles.
The current research aimed at fabricating plant extract mediated biosynthesized silver nanoparticles (AgNPs) utilizing thorn extract of Bombax ceiba (TEBC). The synthesized AgNPs was characterized by UV spectroscopy where the surface plasmonic resonance peak (SPR) was located at 222 nm. The scanning electron microscopy (SEM) studies demonstrated that the morphology of fabricated nanomaterials was primarily cylindrical of average size of 20-30 nm with some spindles of size >50 nm. The anti-microbial evaluation against Staphylococcus aureus revealed that AgNPs exhibited notable activity with ZOI of 27.2 mm at MIC of 25 μg/mL. The outcome of this research evidently signified that the biofabricated AgNPs using TEBC may be a new greener approach or technology to formulate anti-bacterial nanodrugs in future.
Abstract
A rapid advance of nanotechnology has the potential approach for significant improvements in disease prevention, diagnosis and treatment. In this article, we report a simple and eco-friendly biosynthesis of silver nanoparticles (Ag-NPs) using silver nitrate as metal precursor in Curcuma longa. These Ag-NPs were characterized by UV–vis spectroscopy, and Transmission electron microscopy (TEM). These nanoparticles exhibited maximum absorbance in specific nano meter range in UV–vis spectroscopy. TEM micrographs revealed the formation of well-dispersed Ag-NPs with its size and morphology. Microbiology assay founds that Ag-NPs are effective against V.cholera bacteria. These developments raise exciting opportunities to diagnose and treat pathogenic mode of infection based on the various profiles to target diseases.
Plant Mediated Synthesis of Silver Nanoparticles by Using Dried Stem Powder o...IJERA Editor
The Tinospora Crispa is an important medicinal plant to synthesize silver Nanoparticles provides environmentally benign and a feasible alternative to the most of the chemical, physical and biological methods. Utilizing the reduced property of Tinospora Crispa dried stem powder from 1mM aqueous silver nitrate, the average size of 40nm silver nanoparticles were synthesized at room temperature. The stem powder extracts mixed with silver nitrate showed a gradual change in the color of the extracts from yellow to dark brown. The formation of silver nanoparticles was confirmed by UV-Visible spectrophotometer, X-Ray diffraction (XRD), Fourier transform infrared (FTIR), Energy dispersive spectroscopy (EDAX) and Transmission electron microscopy (TEM). The photoluminescence studies of silver nanoparticles shows that they are efficient fluorescence emitting probes.
Nowadays synthesis of nanomaterials by using bio-root is limelight of modern nanotechnology. In the present investigation, we have isolated four strains viz: KFRI 330 (A), KFRI 332 (B), KFRI 351 (C) and KFRI 352 (D) of Beauveria bassiana from the forest soils in Kerala. Spore count was tested for all the strains of B. bassiana stored in the laboratory. Silver nanoparticles were synthesized from the four strains of B. bassiana and the formation of nanoparticles was observed within 48 hours. The synthesized silver nanoparticle has been characterized by UV-Vis spectroscopy, FT-IR and TEM analysis. The appearance of UV-Vis Peak (SPR 440 nm) revealed the reduction of silver metal ions to silver nanoparticles by using the fungal strains. The possible bio-molecules involved in nanoparticles synthesis was identified by HPLC analysis. The functional groups involved in the silver nanoparticles synthesis were identified. The amide group is responsible for the synthesis of silver nanoparticles. From the TEM analysis, the size of the AGNPs has been measured as 4-70 nm (mean 10.7±0.04 nm). It was evident from the HPLC result that primary amines act on capping as a well as a stabilizing agent.
BIOSYNTHESIS AND CHARACTERIZATION OF ZINC OXIDE NANOPARTICLE USING FICUS RELI...Arvind Singh Heer
The objective of this study is to synthesize zinc oxide nanostructures
with the most practical ways by using Ficus Religiosa leaves extract
and characterize the nanostructures. ZnO nanoparticles were
synthesized using Zinc Nitrate (Zn(NO3)2) as a precursor and Ficus
Religiosa leaves extract solvent and distilled water were used as
medium. ZnO nanoparticles were characterized by using XRD, UVVisible
spectroscopy, EDX and SEM, FTIR. Result of EDX
characterization shows that the ZnO nanoparticles has good purity with
(Zinc content of- 72.48% and; Oxygen content of- 27.52%). XRD
result spectrum displays mainly oxygen and zinc peaks, which indicate
the crystallinity in nature as exhibited. SEM micrographs shows that
synthesized ZnO have a cubical structure. The obtained ZnO
nanoparticles are homogenous and consistent in size which corresponds to the XRD result
that exhibit good crystallinity.
Green synthesis of silver nanoparticles using stem extract of Berberis arista...Soma Santra
Plant-mediated synthesis of nanoparticles has been an emerging research area worldwide for its inherent features such as rapidity, simplicity, environment-friendly, and cost-effectiveness. The rapid and simple approach was used for the synthesis
of silver nanoparticles (AgNPs) (AgNO3) using stem of Berberis aristata (Daruharidra) by biologically reducing AgNO3 with
the aqueous extract of plant. The formation of AgNPs was indicated by the color change from slightly yellowish to yellowishbrown. Various techniques were used to characterize biosynthesized NPs by ultraviolet-visible, Fourier transform infrared, scanning electron microscopy, and transmission electron microscopy analysis. The biosynthesized AgNPs were also tested for antimicrobial activity against pathogenic bacteria such as Escherichia coli and Pseudomonas aeruginosa.
ABSTRACT- In our present study, we account for eco-friendly biosynthesis of copper nanoparticles using aqueous leaves extract of Artocarpus heterophyllus against first to fourth instar larvae of Aedes aegypti. The synthesized CuNPs were characterized by UV, XRD, FTIR and SEM analyses were clearly distinguishable. The four different immature mosquito larval stages of A. aegypti were exposed to varying concentrations of aqueous leaf extract of A. heterophyllus, copper sulphate (CuSO4) and synthesized CuNPs for 24 h. The mortality was observed at aqueous extract (LC50= 48.40, 60.55, 70.36, and 82.79 mg/ml), CuSO4 (LC50=21.81, 26.92, 41.38, and 55.12 mg/ml) synthesized CuNPs against first to fourth instars of A. aegypti (LC50= 3.85, 4.24, 4.66, and 5.08 mg/ml), respectively. The novel properties created not only improve the quality of human’s life; it also helps in saving energy and environment.
Key-words: Copper nanoparticles, Jackfruit, Aedes aegypti, aqueous leaf extract
Enlargement of biologically stimulated
investigational processes for the synthesis of nanoparticles is
budding into an important branch of nanotechnology. Eco
responsive methods of green mediated synthesis of nanoparticles
are the present research in the extremity of nanotechnology. The
bioreduction behavior of leaf extracts of Morinda citrifolia L.
(Rubiaceae) in the green synthesis of silver nanoparticles was
investigated employing UV/Visible Spectrophotometry, Particle
size analyzer, Zeta potential, Filed emission scanning electron
microscopy, Energy Dispersive X-ray Analysis and FourierTransform
Infrared Spectroscopy. The antifungal property of the
silver nanoparticles was tested against Candida albicans,
Candida tropicalis and Candida krusei. The Antifungal assay
tests Zone of inhibition revealed the concentrations of more than
10µl of silver nanoparticles were inhibited the growth of fungal
pathogens.
Green synthesis and characterization of silver nanoparticles using tinosopora...IJARIIT
User authentication is an important topic in the field of information security. To enforce security of information,
passwords were introduced. Text based password is a popular authentication method used from ancient times. However text
based passwords are prone to various attacks. Strong text-based password schemes could provide with certain degree of security.
However, the fact that strong passwords are difficult to memorize often leads their users to write them down on papers or even
save them in a computer file. Human actions such as choosing bad passwords and inputting passwords in an insecure way are
regarded as the weakest link in the authentication chain. Graphical password is one of the alternative solution to alphanumeric
password as it is very simple process to remember alphanumeric password. One of the major reasons behind this method
implementation is that, according to psychological studies human mind can easily remember images than alphabets or digits.
Graphical authentication has been proposed as a possible alternative solution to text-based authentication. A new technique of
captcha and OTP is being used for the verification purpose. Three times a person is given chance to try for login if the person
fails then he is blocked till the session expires.
Phyto-mediated Synthesis of Copper Nanoparticles by Cassia auriculata and its...IJEAB
An eco-friendly loom has been taking up in the present study to synthesize copper nanoparticles using Cassia auriculata. The leaf extract of Cassia auriculata acts as reducing as well as capping agent. Synthesis of copper nanoparticles was initially confirmed by the visual observation i.e color change (dark green color). The synthesized copper nanoparticles were primarily characterized by UV-vis spectroscopy and Fourier Transform Infrared (FTIR) spectroscopy. Further, the formation of amorphous and crystalline phase was analyzed by X-Ray Diffraction pattern. The size and morphology of the synthesized Copper nanoparticles was characterized by Scanning Electron Microscopy (SEM) and the elemental composition was analyzed by EDAX. The present study is a preliminary investigation to know about the capability of Cassia auriculata to synthesize copper nanoparticles from its salts. The results of the present study confirmed that the leaf extract of Cassia auriculata be capable of recovering copper from printed circuit boards in the form of nanoparticles in near future.
Green synthesis of zinc oxide nano particles using flower extract cassia dens...IJERD Editor
Green synthesis of metal nanoparticles is an interesting issue of the nanoscience and
nanobiotechnology. There is a growing attention to biosynthesis the metal nanoparticles using organisms.
Among these organisms, plants seem to be the best and they are suitable for large scale biosynthesis of
nanoparticles. Nanoparticles produced by plants are more stable, and the rate of synthesis is faster than that in
the case of other organisms. The present investigation was carried out to green synthesis of zinc oxide
nanoparticles by using the medicinal plant cassia densistipulata taub. The flower was collected from the campus
of Anantapuramu, Andhra Pradesh and their petals were separated. The petals were taken and cleaned with
dimeneralized water and soaked for an hour on dry cloth to remove moisture from the petals.
Synthesis of Zinc Nanoparticles was done by mixing 5gms of Zinc Nitrate with 50ml of aqueous
extract of cassia densistipulata taub petals. The formation of nanoparticles was monitored by visualizing color
changes and it was confirmed by Electron microscope (SEM), UV-Vis spectrophotometer and Fourier
Transform Infra-Red (FT-IR) spectroscopy. The results of various techniques confirmed the presence Zinc oxide
nanoparticles.
Is Nano Medicine And Nano Technology The Most Trending Thing Now?science journals
Nano medicine is nothing but application of Nano technologies as medicines. It may include application of non-material as biological devices or nano-electronic biosensors. Molecular nanotechnology as biological machines may have medical applications in future.
The current research aimed at fabricating plant extract mediated biosynthesized silver nanoparticles (AgNPs) utilizing thorn extract of Bombax ceiba (TEBC). The synthesized AgNPs was characterized by UV spectroscopy where the surface plasmonic resonance peak (SPR) was located at 222 nm. The scanning electron microscopy (SEM) studies demonstrated that the morphology of fabricated nanomaterials was primarily cylindrical of average size of 20-30 nm with some spindles of size >50 nm. The anti-microbial evaluation against Staphylococcus aureus revealed that AgNPs exhibited notable activity with ZOI of 27.2 mm at MIC of 25 μg/mL. The outcome of this research evidently signified that the biofabricated AgNPs using TEBC may be a new greener approach or technology to formulate anti-bacterial nanodrugs in future.
Microwave Assist Green Synthesis of Silver Nano Particles Using Rhynchostylis...Dr. Amarjeet Singh
A novel green approach for the synthesis and
stabilization of silver nanoparticles (AgNPs) using water
extract of Rhynchostylisretusa(L.) Blume leaf has been
developed. As obtained, the nanoparticles are characterized by
UV-visible (UV-Vis), FTIR, X-ray diffraction (XRD) and SEM
analysis. The crystalline nature of the AgNPs is confirmed by
the prominent peaks in the XRD pattern. FTIR spectra suggest
that the possible biomolecules are responsible for the efficient
stabilization of the sample. The prepared nanoparticle shows
good antioxidant activity.
Cytotoxic | Primary research | Silver nanoparticlesPubrica
Biosynthesis, Antimicrobial, and Cytotoxic Effects of Silver Nanoparticles Using Acacia Concinna POD Extract and Kigelia Africa Leaf Extract- Secondary metabolites found in plants include alkaloids, flavonoids, phenolic compounds, phytosterols, saponins, tannins, carbohydrates, proteins, lipids, and minerals. These secondary metabolites have a wide range of uses, including the production of nanoparticles.
Biosynthesis, Antimicrobial, and Cytotoxic Effects of Silver Nanoparticles Using Acacia Concinna POD Extract and Kigelia Africa Leaf Extract- Secondary metabolites found in plants include alkaloids, flavonoids, phenolic compounds, phytosterols, saponins, tannins, carbohydrates, proteins, lipids, and minerals. These secondary metabolites have a wide range of uses, including the production of nanoparticles.
Visit us @ https://pubrica.com/insights/sample-work/cytotoxic-effects-of-sliver-nanoparticles-using-leaf-extract/
Formulation Of Acalypha Wilkesiana Muell. Arg. Ethanol Leaf Extract into Crea...inventionjournals
International Journal of Pharmaceutical Science Invention (IJPSI) is an international journal intended for professionals and researchers in all fields of Pahrmaceutical Science. IJPSI publishes research articles and reviews within the whole field Pharmacy and Pharmaceutical Science, new teaching methods, assessment, validation and the impact of new technologies and it will continue to provide information on the latest trends and developments in this ever-expanding subject. The publications of papers are selected through double peer reviewed to ensure originality, relevance, and readability. The articles published in our journal can be accessed online.
Similar to IRJET- Characterization of Silver Nanoparticles Biosynthesized using Ficus Religiosa Plant Leaf Extract (20)
Water scarcity is the lack of fresh water resources to meet the standard water demand. There are two type of water scarcity. One is physical. The other is economic water scarcity.
Immunizing Image Classifiers Against Localized Adversary Attacksgerogepatton
This paper addresses the vulnerability of deep learning models, particularly convolutional neural networks
(CNN)s, to adversarial attacks and presents a proactive training technique designed to counter them. We
introduce a novel volumization algorithm, which transforms 2D images into 3D volumetric representations.
When combined with 3D convolution and deep curriculum learning optimization (CLO), itsignificantly improves
the immunity of models against localized universal attacks by up to 40%. We evaluate our proposed approach
using contemporary CNN architectures and the modified Canadian Institute for Advanced Research (CIFAR-10
and CIFAR-100) and ImageNet Large Scale Visual Recognition Challenge (ILSVRC12) datasets, showcasing
accuracy improvements over previous techniques. The results indicate that the combination of the volumetric
input and curriculum learning holds significant promise for mitigating adversarial attacks without necessitating
adversary training.
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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.
Saudi Arabia stands as a titan in the global energy landscape, renowned for its abundant oil and gas resources. It's the largest exporter of petroleum and holds some of the world's most significant reserves. Let's delve into the top 10 oil and gas projects shaping Saudi Arabia's energy future in 2024.
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.
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.
Student information management system project report ii.pdfKamal Acharya
Our project explains about the student management. This project mainly explains the various actions related to student details. This project shows some ease in adding, editing and deleting the student details. It also provides a less time consuming process for viewing, adding, editing and deleting the marks of the students.