Green Synthesis of Silver Nanoparticles Using <i>Avena sativa L.</i> Extract

Abstract

<strong>Objective(s)</strong>: Nowadays, nanoparticles bio production, considering their performance in medicine and biological science, is increasing. 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 the production of silver nanoparticles using <em>Avena sativa L.</em> extract and optimization of the biosynthesis process. The effects of quantity of substrate (silver nitrate (AgNo₃)) and temperature on the formation of silver nanoparticles are studied.<br /> <strong>Methods</strong>: In this work, silver nanoparticles were synthesized from an extract of <em>Avena sativa L</em>. at different temperatures (30^°C, 60^°C, 90^°C ) and AgNo₃ concentrations( 1 mM, 2mM, 4mM) . The morphology and size of the nanoparticles were determined using Scanning Electron Microscope (SEM) and Dynamic Light Scattering (DLS).<br /> <strong>Results</strong>: SEM images showed that by increasing temperature nanoparticles size were decreased and by increasing concentrations of AgNo₃the number of nanoparticles was increased.<br /> <strong>Conclusions</strong>: The results indicated that by increasing the reaction temperature, the size of the nanoparticles would decrease. Also by increasing the concentrations of AgNo₃, the amount of produced nanoparticles would be increased, but won't have a significant effect on its size. The preparation of nano- structured silver particles using <em>Avena sativa L.</em> extract provides an environmentally friendly option as compared to currently available chemical/ physical methods.