SYNTHESIS AND CHARACTERIZATION OF ZnO NANOPARTICLES BY PRECIPITATION METHOD

Zinc oxide (ZnO) is an important semiconductor material that is used in the production of various industrial products. This paper describes the preparation of ZnO nanoparticles via chemical precipitation method. In precipitation method, the zinc nitrate solution is drop into aqueous sodium hydroxide, NaOH as precipitating agent. ZnO nanoparticles were synthesized by chemical precipitation method and calcinated at 500°C. The structural and optical characterization of ZnO nanoparticles were studied with X-ray Dif ractometer and UV-Visible spectroscopy respectively. X- ray dif raction pattern exhibit the polycrystalline nature with hexagonal wurtzite structure having the preferred orientation along (002) plane. The optical results describe the maximum absorption wavelength at 388 nm and the optical band gap is3.19 eV