Synthesis and Characterisation of ZnO Nanoparticals by XRD, EDX, SEM, FTIR and UV-DRS

Abstract

Nano sized materials have been an important subject in basic and applied science. ZnO nano particle were synthesized using a simple co-precipitation method with zinc nitrate and poly ethylene glycol as a starting material. The sample where characterized by X-ray diffraction (XRD) Scanning electron, microscopy (SEM), Energy dispersive spectroscopy(EDX), SEM images show various morphological changes of ZnO obtained by the above method. The average crystallite sizes of the samples were calculated from the full width at half maximum of XRD peaks by using Debye-Scherer’s formula. EDS shows that the above route produced highly pure ZnO nanostructures. The optical band gaps of various ZnO powders were calculated from UV-visible diffuse reflectance spectroscopic studies. Antibacterial activity of ZnO nanoparticls is tested against gram positive and gram negative bacteria by using agar-well method.