Silver Nanoparticles: Preparation, Characterization, And Kinetics
Javed Ijaz Hussain, Sunil Kumar, Athar Adil Hashmi, Zaheer Khan
Volume 2, Issue 3, Page 188-194 | DOI: 10.5185/amlett.2011.1206
Nanostructures; chemical synthesis; surfaces properties; aniline
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. Copyright © 2011 VBRI press.