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Journal of Nanotechnology
Volume 2013, Article ID 906592, 6 pages
Research Article

Green Synthesis of Gold and Silver Nanoparticles Using Averrhoa bilimbi Fruit Extract

Department of Nanotechnology, Noorul Islam Centre for Higher Education (N.I. University), Kumaracoil, Tamil Nadu 629 180, India

Received 10 July 2013; Revised 15 August 2013; Accepted 31 August 2013

Academic Editor: Carlos R. Cabrera

Copyright © 2013 R. S. Rimal Isaac et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


We report on rapid one-step green synthesis of gold and silver nanoparticles using fruit extract of Averrhoa bilimbi Linn. UV-Vis absorption spectroscopy was used to monitor the quantitative formation of gold and silver nanoparticles. The characteristics of the obtained gold and silver nanoparticles were studied using UV-Vis absorption spectroscopy (UV/Vis), Fourier transform infrared spectroscopy (FTIR), Scanning electron microscopy (SEM), and Energy-dispersive spectroscopy (EDX). UV/Vis spectrum showed Surface Plasmon Resonance (SPR) for both gold and silver nanoparticles at 540 and 420 nm. The EDX spectrum of the solution containing gold and silver nanoparticles confirmed the presence of elemental gold and silver signals. The average diameter of the prepared nanoparticles in solution was about 50–150 nm. Synthesized particles were either hexagonal or rhomboidal in shape. This synthesis approach of gold and silver nanoparticles is cost effective and can be widely used in biological systems. The effect of fruit extract and metal ion concentration was also studied.