Cover Page September-2011-Advanced Materials Letters

Advanced Materials Letters

Volume 2, Issue 3, Pages 188-194, September 2011
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Silver nanoparticles: preparation, characterization, and kinetics

Javed Ijaz Hussain1, Sunil Kumar2, Athar Adil Hashmi1, Zaheer Khan1,3*

1Department of Chemistry, Jamia Millia Islamia (Central University), New Delhi 110025, India

2Department of Chemistry, University of Delhi, New Delhi 110007, India

3Department of Chemistry, Faculty of Science, King Abdul Aziz University, P.O. Box 80203, Jeddah 21413, Saudi Arabia

Adv. Mater. Lett., 2011, 2 (3), pp 188-194

DOI: 10.5185/amlett.2011.1206

Publication Date (Web): Apr 08, 2012

E-mail: drkhanchem@yahoo.co.in

Abstract

In this paper we report the effect of aniline concentrations on the growth and size of silver nanocrystals using aniline and silver nitrate as reductant and oxidant, respectively. UV-Vis spectroscopy, transmission electron microscopy (TEM) and selected areas electron diffraction (SAED) have been employed to characterize silver nanoparticles. The TEM images show that silver nanocrystals are roughly spherical and of uniform particle size, and the average particle size is ca. 25 nm. A broad surface plasmon resonance band appears at 400 nm. The rings patterns are in good agreement with the standard values of the face-centered-cubic form of silver nanocrystals. This is attributed to the adsorption of aniline and /or interparticle interaction onto the surface of Ag-nanocrystals through electrostatic interactions between the lone-pairs electrons of –NH2 and positive surface of Ag- nanoparticles.

Keywords

Nanostructures, chemical synthesis, surfaces properties, aniline

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