نتایج جستجو برای: green silver nanoparticles

تعداد نتایج: 276019  

2012
Yuet Ying Loo Buong Woei Chieng Mitsuaki Nishibuchi Son Radu

The development of the biological synthesis of nanoparticles using microorganisms or plant extracts plays an important role in the field of nanotechnology as it is environmentally friendly and does not involve any harmful chemicals. In this study, the synthesis of silver nanoparticles using the leaves extract of Chinese tea from Camellia sinensis is reported. The synthesized nanoparticles were ...

2014
Deepak K. Rahi

In the recent past green synthesis has emerged as an important and eco friendly technology in the field of nanosciences for the synthesis of various metal nanoparticles of variable sizes and shapes. The present study focuses on the mycosynthesis (i.e., synthesis by fungi) of silver nanoparticles by an important species of Penicillium, an endophytic fungus isolated from the roots of Aloe vera pl...

Journal: :international journal of nano dimension 0
s. abdeen department of nanotechnology, noorul islam university, kumaracoil, tamil nadu, india. s. geo department of microbiology, noorul islam college of arts and sciences, tamil nadu, india s. sukanya department of biotechnology, noorul islam college of arts and sciences, tamil nadu, india p.k. praseetha department of nanotechnology, noorul islam university, kumaracoil, tamil nadu, india r.p dhanya department of microbiology, noorul islam college of arts and sciences, tamil nadu, india

silver is composed of a large percentage of silver oxide due to their large ratio of surface to bulk silver atoms. silver nanoparticles have been a potent antibacterial, antifungal, anti-viral and anti-inflammatory agent. a simple, eco-friendly, inexpensive biosynthetic method was employed to synthesize silver nanoparticles.  the present study aimed at the comparative study of silver nanopartic...

2017
Andrea Rónavári Dávid Kovács Nóra Igaz Csaba Vágvölgyi Imre Miklós Boros Zoltán Kónya Ilona Pfeiffer Mónika Kiricsi

Due to obvious disadvantages of the classical chemical methods, green synthesis of metallic nanoparticles has attracted tremendous attention in recent years. Numerous environmentally benign synthesis methods have been developed yielding nanoparticles via low-cost, eco-friendly, and simple approaches. In this study, our aim was to determine the suitability of coffee and green tea extracts in gre...

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...

  Background and purpose: Microbial resistance against antibiotics is increasingly growing, therefore, it is necessary to develop new remedies. Silver nanoparticles have significant antibacterial properties and synthesis of silver nanoparticles mediated by plant extracts could be considered as an alternative in treatment in various infections. Materials and methods: In this study, silver nano...

Ratika Komal, Simran Kashyap

Green synthesis of nanoparticles using plants as sources exhibiting superiority over the physical and chemical methods that are expensive and can involve the use of toxic, hazardous chemicals, which may pose biological and environmental risks. In present study silver nanoparticles were synthesized in single step by biological method using extracts of Actinidia deliciosa paste as reducing and st...

2013
Akshay Rajeev Geetha Elizabeth George Akshay Srinivasan Jameel Shaik

Production of silver nanoparticles from the leaf extracts of Pimenta dioica is reported for the first time in this paper. Three different sets of leaves were utilized for the synthesis of nanoparticles-fresh, hot-air oven dried, and sun-dried. These nanoparticles were characterized using UV-Vis spectroscopy and AFM. The results were diverse in that different sizes were seen for different leaf c...

Journal: :Journal of environmental sciences 2015
Palaniselvam Kuppusamy Solachuddin J A Ichwan Narasimha Reddy Parine Mashitah M Yusoff Gaanty Pragas Maniam Natanamurugaraj Govindan

In this present study, we reported broccoli (Brassica oleracea L.) as a potential candidate for the synthesis of gold and silver nanoparticles (NPs) in green chemistry method. The synthesized metal nanoparticles are evaluated their antimicrobial efficacy against different human pathogenic organisms. The physico-chemical properties of gold nanoparticles were analyzed using different analytical t...

2012
Chandan Singh Ritesh K. Baboota Pradeep K. Naik Harvinder Singh

This report presents a rapid, reproducible and a green biogenic approach for the biosynthesis of gold and silver nanoparticles using leaf extract of Dalbergia sissoo. The biomolecules present in the plant induced the reduction of Au and Ag ions from HAuCl4 and AgNO3 respectively, which resulted in the formation of Dalbergia conjugated nanoparticles. The growth of nanoparticles was monitored by ...

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