Original Articles
R Santhi, C Shanthi, M Sathya,
Abstract
In this article we present a simple, efficient, low cost synthesis of CdO /CdZnO nanoparticles. The synthesized particles were characterized by x-ray diffraction, ultraviolet-visible spectroscopy, field emission scanning electron microscopy, photoluminescence spectroscopy and inductively coupled plasma measurements. X-ray diffraction studies indicate that the obtained CdO /CdZnO have a cubic structure at nanoscale. The band gaps were calculated from the absorption peak of ultraviolet-visible spectrum and it was found to vary from 2.47 - 2.28 eV on Zn doping. Increase in transmittance upon Zn doping was observed. Field emission scanning electron microscopy images showed that the synthesized samples composed of nanoparticles with the average diameter of 20.8 – 34.7 nm. The 6% Zn doped CdO nanoparticles were used to study antibacterial activities against Bacillus subtilis and Klebsiella pneumoniae microbes. It shows the antimicrobial activities are better against Bacillus subtilis than that of Klebsiella pneumoniae.