Shape and Size Effect of Surface Plasmons on Gold Nanoparticles

Abstract

Ahmed M. K. Al bayati, Rafea. A. Munef, Raad M.S. Al haddad

The growth of gold nanoparticles by controlling temperature, Trisodium citrate (Agent reduction) and Chloroauric acid (Stock solution) has been examined in detail to explore the parameter space of reaction conditions. It is found that gold particles can be produced in a wide range of sizes, from (1) to (100) nm, with defined size distribution, following the earlier work of Turkevich. The reaction is initiated thermally or in comparison with UV irradiation, which results in similar final products by using UV-Spectrometer. The kinetics of the extinction spectra show the multiple steps of primary and secondary clustering leading to polycrystallites.