SYNTHESIS AND CHARACTERIZATION OF ZINC OXIDE NANOPARTICLES BY CHEMICAL METHOD

Abstract

The ZnO nanoparticles were successfully synthesized by chemical method were found to be (20-70) nm in size as revealed by XRD Scherer’s formula. The particle size measurement was done by SEM, TEM. In the present research work ZnO nanoparticles were synthesized using Zinc Acetate in ethanol with further addition of ethyl acetate. The white synthesized ZnO powder was then heated at 450℃, 750℃ and 900℃ temperatures. The ZnO samples were then characterized by XRD, SEM and TEM. Further characterization was done using FTIR, UV- visible spectroscopy and DSC-TGA. The hexagonal wurtzite structure of ZnO was confirmed by XRD spectra. FCC structure was also predicted by the XRD peaks. The optical properties of the ZnO samples were studied by UV-visible spectroscopy. The temperature variation of samples indicates that the size increases with increase in temperature while the XRD peaks gets sharper and sharper. The thermal properties were investigated by TGA.