Structural, Optical and Antibacterial Activity of Pure and Cadmium Doped Zinc Oxide Nano Particles

Abstract

Metal oxide nanoparticle is a versatile material with much scientific and industrial application.Zinc Oxide (ZnO) and Cd doped Zinc Oxide were prepared by Co-precipitation method.ZnO nanoparticle play important role in the enhancement of dielectric properties of nano composites.The crystalline nature of the sample were also confirmed by X-ray diffraction pattern.The crystalline size of the pure and Cd doped nano particle were determined as 21 nm and 18 nm.FT-IR spectra identify the functional groups present in the molecular structure.There is a shift in the low frequency region confirmed the presence of the dopant (Cd).The surface morphology of the prepared materials were also analysed by SEM with EDAX.The photo luminescence analysis spectrum of these samples were also recorded.It shows blue shift at 366 nm.The energy gap value for pure and Cd doped ZnO were also determined.Anti-bacterial studies show that the zone of inhibition is high for the ZnO and Cd doped ZnO nano particle.ZnO nanoparticle shows significant antibacterial activity against bacterial species.