نتایج جستجو برای: green silver nanoparticles

تعداد نتایج: 276019  

ObjectiveThe present work represents the green synthesis of silver nanoparticles using Withania coagulans extract and its antibacterial property. The synergy, additive, bacteriostatic and bactericidal effect of silver nanoparticles was determined against Enterococcus faecalis, Staphylococcus aureus, Escherichia coli, Proteus vulgaris, Salmonella typhi, and Vibrio cholerae. Methods <...

2014
N Packialakshmi

The aim of this study was to synthesis of silver nanoparticles in the aqueous stem extracts of Caralluma fimbriyata and investigate its antibacterial activity. Nanoparticles are being used in many commercial applications. It was found that aqueous silver ions can be reduced by aqueous stem extracts of plant parts to generate to extremely stable silver nanoparticles in water. The chemical groups...

2014
W. Wonsawat

Bioreduction of silver nanoparticles (AgNPs) from silver ions (Ag) using water extract of Thai basil leaf was successfully carried out. The basil leaf extract provided a reducing agent and stabilizing agent for a synthesis of metal nanoparticles. Silver nanoparticles received from cut and uncut basil leaf was compared. The resulting silver nanoparticles are characterized by UV-Vis spectroscopy....

Journal: :Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy 2014
Mahmoud Nasrollahzadeh Ferydon Babaei S Mohammad Sajadi Ali Ehsani

We report the green synthesis of silver nanoparticles by using Euphorbia condylocarpa M. bieb root extract for the synthesis of N-monosubstituted ureas in water. UV-visible studies show the absorption band at 420 nm due to surface plasmon resonance (SPR) of the silver nanoparticles. This reveals the reduction of silver ions (Ag+) to silver (Ago) which indicates the formation of silver nanoparti...

Nowadays, green chemistry and its advantages are generating interest of researchers toward ecofriendly biosynthesis of the metallic nanoparticles. In this research, a rapid, simple and green method was developed for the synthesis of silver nanoparticles using aqueous extract of Prangos ferulaceae leaves. The synthesized silver nanoparticles were characterized by UV-Vis spectroscopy, sc...

2013
Naheed Ahmad Seema Sharma

The biosynthesis of nanoparticles has been proposed as a cost effective and environmental friendly alternative to chemical and physical methods. Plant mediated synthesis of nanoparticles is a green chemistry approach that intercomnects nanotechnology and plant biotechnology. In the present study, synthesis of silver nanoparticles (AgNPs) or (Green-Silver) has been demonstrated using extracts of...

2013
Kantha D Arunachalam Sathesh Kumar Annamalai

The exploitation of various plant materials for the biosynthesis of nanoparticles is considered a green technology as it does not involve any harmful chemicals. The aim of this study was to develop a simple biological method for the synthesis of silver and gold nanoparticles using Chrysopogon zizanioides. To exploit various plant materials for the biosynthesis of nanoparticles was considered a ...

2016
R. Mariselvam A. J. A. Ranjitsingh P. Mosae Selvakumar Abdullah A. Alarfaj Murugan A. Munusamy

The photocatalytic degradation of the chemical dye AZO and dye effluents in different time duration has been investigated using biologically synthesized silver nanoparticles. Dye industry effluents and AZO dye undergo degradation to form harmless intermediate and colourless products following irradiation by UV and solar light in the presence of green synthesized silver nanoparticles. The degree...

2013
J. Sivakumar C. Premkumar P. Santhanam N. Saraswathi Norio Taniguchi

Various plant materials for the synthesis of nanoparticles is considered a green technology, In the present study reports the synthesis of Silver nanoparticles were synthesized from Calotropis gigantea leaf and the formation of silver nanoparticles was observed with different time intervals. The results recorded from UV-Vis spectrum, scanning electron microscope, X ray diffraction and Fourier t...

Journal: :jundishapur journal of microbiology 0
mohsen adeli department of chemistry, faculty of science, lorestan university, khoramabad, ir iran hasan hosainzadegan maragheh faculty of nursing and midwifery, tabriz university of medical sciences, tabriz, ir iran; maragheh faculty of nursing &amp; midwifery, tabriz university of medical sciences, tabriz, ir iran. tel: +98-9147667729, fax: +98-4212276363 iraj pakzad department of microbiology and clinical microbiology research center, faculty of medicine, ilam university of medical sciences, ilam, ir iran fatemeh zabihi department of chemistry, faculty of science, lorestan university, khoramabad, ir iran maedee alizadeh maragheh faculty of nursing and midwifery, tabriz university of medical sciences, tabriz, ir iran fattane karimi maragheh faculty of nursing and midwifery, tabriz university of medical sciences, tabriz, ir iran

background silver has been used from ancient times by humans, and recently nanoparticles of silver have been used in many aspects of human life including as a potent antibacterial agent. objectives in the current study a completely green method to prepare silver nanoparticles is reported. two types of starches (potato and corn starches) were used to produce and stabilize silver nanoparticles. a...

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