Synthesis of Silver Nanoparticles by Electrochemical Method

Abstract

Spherical or dendritic silver nanoparticles have been synthesized by an electrochemical technique in an aqueous solution containing L-cysteine or citric acid. The silver nanoparticles are characterized by powder X-ray diffraction (XRD), transmission electron microscope (TEM) and UV-Vis absorption spectrum. A typical XRD pattern of the as-prepared silver nanoparticles shows the presence of the diffraction peaks corresponding to the (111), (200), (220), (311) planes. All the peaks in the XRD pattern can be indexed as a fee structure (JCPDS, No. 4-0783). The TEM image in the presence of L-cysteine shows spherical nanoparticles. But the TEM image in the presence of citric acid shows dendritic nanoparticles.