نتایج جستجو برای: green synthesis of silver nanoparticles

تعداد نتایج: 21223070  

2017
Azam Chahardoli Naser Karimi Ali Fattahi

The biogenic synthesis of metal nanomaterial offers an environmentally benign alternative to the traditional chemical synthesis routes. In the present study, the green synthesis of silver nanoparticles (AgNPs) from aqueous solution of silver nitrate (AgNO3) by using Nigella arvensis L. seed powder extract (NSPE) has been reported. AgNPs were characterized by UV-vis absorption spectroscopy with ...

2014
N. Gandhi D. Sirisha Vikas Chandra Sharma

Silver Nanoparticles are applied in various fields due to its anti bacterial properties. A conventional method for synthesis of AgNP requires dangerous chemical and large amount of energy is released in the process. Environmental friendly techniques are adopted for the synthesis of nanoparticles of silver. The present research work summarizes the green synthesis of silver nanoparticles by using...

2014
M. Vanaja K. Paulkumar M. Baburaja S. Rajeshkumar G. Gnanajobitha C. Malarkodi M. Sivakavinesan G. Annadurai

Nowadays plant mediated synthesis of nanoparticles has great interest and achievement due to its eco-benign and low time consuming properties. In this study silver nanoparticles were successfully synthesized by using Morinda tinctoria leaf extract under different pH. The aqueous leaf extract was added to silver nitrate solution; the color of the reaction medium was changed from pale yellow to b...

2012
M. Bhanu Prakash Subhankar Paul

In the present study, silver nanoparticles were rapidly green synthesized from AgNO3 solution using leaf extract of Vinca Roseus at room temperature. The green synthesized Silver Nanoparticles were characterized by UV–Visible absorption spectroscopy and further by analytical techniques such as, DLS, X-ray diffraction (XRD) and SEM. X-ray diffraction and Scanning Electron Microscope analysis stu...

2014
Supriyo Chowdhury Arpita Basu Surekha Kundu

In recent years, green synthesis of nanoparticles, i.e., synthesizing nanoparticles using biological sources like bacteria, algae, fungus, or plant extracts have attracted much attention due to its environment-friendly and economic aspects. The present study demonstrates an eco-friendly and low-cost method of biosynthesis of silver nanoparticles using cell-free filtrate of phytopathogenic fungu...

2013
Samir Kumar Patra

The present work investigates the synthesis of silver nanoparticles (Ag NPs) by biological method using Bacillus thuringiensis. The MIC test was performed to test the inhibitory concentration of AgNO3 against B. thuringiensis and B. subtilis. Silver nanoparticles were successfully synthesized from B. thuringiensis by green synthesis method. The detailed characterization of the Ag NPs was carrie...

In this work, we described a cost-effective and environmentally friendly technique for green synthesis of colloidal silver nanoparticles from aqueous extract of fresh leaves of Acacia melanoxylon and its application as a dopamine and hydrogen peroxide sensor. The prepared silver nanoparticles were characterized by UV-Visible absorption spectroscopy, X-ray diffraction (XRD), scanning electron mi...

Journal: :Materials advances 2022

A schematic illustration of green synthesis silver nanoparticles using Desmodium triquetrum extract, characterization, and their potential as antibacterial, antibiofilm, cytotoxicity agent.

2016
Marta Espina Palanco Klaus Bo Mogensen Marina Gühlke Zsuzsanna Heiner Janina Kneipp Katrin Kneipp

We report fast and simple green synthesis of plasmonic silver nanoparticles in the epidermal cells of onions after incubation with AgNO3 solution. The biological environment supports the generation of silver nanostructures in two ways. The plant tissue delivers reducing chemicals for the initial formation of small silver clusters and their following conversion to plasmonic particles. Additional...

2018
Yoonho Choi Sehyeon Kang Song-Hyun Cha Hyun-Seok Kim Kwangho Song You Jeong Lee Kyeongsoon Kim Yeong Shik Kim Seonho Cho Youmie Park

A green synthesis of gold and silver nanoparticles is described in the present report using platycodon saponins from Platycodi Radix (Platycodon grandiflorum) as reducing agents. Platycodin D (PD), a major triterpenoidal platycodon saponin, was enriched by an enzymatic transformation of an aqueous extract of Platycodi Radix. This PD-enriched fraction was utilized for processing reduction reacti...

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