نتایج جستجو برای: green synthesis of silver nanoparticles

تعداد نتایج: 21223070  

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 ...

A. Baghizadeh G. A. Mansoori R. Mohammadinejad Sh. Pourseyedi Sh. Ranjbar

Green synthesis of nanoparticles, as fundamental building blocks of nanotechnology, has recently attracted considerable attention. Silver nanoparticles have unique physiochemical, biological and environmental properties which make them useful in a wide range of applications. In the present paper we report our research results on biosynthesis of silver nanoparticles from silver precursor usin...

Journal: Journal of Nanoanalysis 2017
Gholamreza Amin, Nooshin Amini, Zahra Jafari Azar

Nanoparticles bio production, considering their performance in medicine and biologicalscience, is increasing; also, raising awareness of green chemistry and bioprocesses hasencouraged the use of environmentally friendly methods for the production of non-toxicnanomaterials.. Also uses of plant extracts are found to be more advantageous over chemical,physical and microbial (bacterial, fungal, alg...

Journal: :Journal of colloid and interface science 2015
Mahmoud Nasrollahzadeh S Mohammad Sajadi Ferydon Babaei Mehdi Maham

During this study, we report the green synthesis of silver nanoparticles (Ag NPs) using Euphorbia helioscopia Linn leaf extract for the synthesis of propargylamines. Also, the structural and optical properties are studied. The synthesized nanoparticles are characterized by TEM, XRD, FT-IR and UV-visible techniques. UV-visible studies show an absorption band at 440 nm due to surface plasmon reso...

2013
Siavash Iravani Behzad Zolfaghari

Recently, development of reliable experimental protocols for synthesis of metal nanoparticles with desired morphologies and sizes has become a major focus of researchers. Green synthesis of metal nanoparticles using organisms has emerged as a nontoxic and ecofriendly method for synthesis of metal nanoparticles. The objectives of this study were production of silver nanoparticles using Pinus eld...

Biological production of silver nanoparticles, due to its high antimicrobial properties and environmental compatibility, can be used as an alternative to antibiotics. The aim of this study was to optimize the green synthesis of silver nanoparticles using fruit extract of Bunium persicum Boiss and investigate the antimicrobial effect of nanoparticles against Escherichia coli and Staphylococcus a...

Journal: Journal of Nanoanalysis 2020
H.M. El-Masry Noha Mohamed,

In this study, a single-step method for green synthesis of silver nanoparticles usingAloe Vera gel extract and sunlight was investigated. The Aloe Vera gel extractis composed of pectins, lignin, and hemicellulose, which can be used in thereduction of silver ions to produce colloidal silver nanoparticles (AgNPs-AV). Thepreliminary preparation of silver nanoparticles was o...

The purpose of this study was to expand a trouble free biological method for the synthesis of silver nanoparticles (AgNPs) using the leaves extract of Rosa ChinensisL. to act as reducing and stabilizing agent. Water soluble phytochemicals played a vital role for the reduction silver ions into silver nanoparticles. The leaves extract was exposed to silver ions and the resultant biosynthesized Ag...

Biological production of silver nanoparticles, due to its high antimicrobial properties and environmental compatibility, can be used as an alternative to antibiotics. The aim of this study was to optimize the green synthesis of silver nanoparticles using fruit extract of Bunium persicum Boiss and investigate the antimicrobial effect of nanoparticles against Escherichia coli and Staphylococcus a...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه رازی - پژوهشکده علوم 1388

heteropoly acids (hpa) and their salts have advantages as catalysts which make them both economically and environmentally attractive, strong br?nsted acidity, exhibiting fast reversible multi-electron redox transformations under rather mild conditions, very high solubility in polar solvents, fairly high thermal stability in the solid states, and efficient oxidizing ability, so that they are imp...

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