Synthesis and Characterization of Electrodeposited Gold Nanoparticles

Abstract: Metal nanostructures have attracted a large amount of attention, particularly the synthesis of noble metallic nanoparticles with controlled size, shape, morphology and crystal orientation. Among the noble metals, Gold (Au) had earned great importance due to its chemical stability and unique optical properties. The present work is carried out to synthesize the spherical gold nanoparticles by a very simple electrodeposition technique from an aqueous solution of Chloroauric acid. The as prepared gold nanoparticles were characterized by X-Ray diffraction Spectroscopy and scanning electron microscopy for the structural and morphological evolution. The highly uniform and dense spherical Gold nanoparticles with an approximate size of 52 nm were grown on the substrate. By varying different parameters gold nanoparticles of different sizes can be prepared. These gold nanoparticles can be utilized for vast variety of applications such as chemical sensing, medical therapy, in photovoltaic cells, fuel cells, drug delivery, Surface Plasmon Resonance (SPR) etc.

Keywords: Nanoparticles, Electrodeposition, Gold Nanoparticles, Scanning Electron Microscopy.