EVALUATING THE STRUCTURAL, MORPHOLOGICAL AND OPTICAL PROPERTIES OF PURE AND COBALT DOPED BISMUTH VANADATE NANOPOWDER BY CHEMICAL PRECIPITATION METHOD

Abstract

Pure BiVO4, Cobalt doped BiVO4 nanoparticles prepared by Co-precipitation method and assessed for their structural, morphological and optical properties. The synthesized Pure BiVO4 and Co-BiVO4 nanoparticles were characterized by using XRD,FTIR, UV-DRS, SEM,EDS and Photoluminescence spectra (PL). XRD pattern shows the purity of prepared Pure BiVO4 and Co-BiVO4 nanoparticles size range of 5.6-22.3 nm and exhibit orthorhombic crystalline phase. Scanning Electron Microscopy (SEM) shows some clusters with tiny particles which revealed remarkable change in morphology of the prepared samples. The functional groups confirmation and chemical bonding confirmation was performed by FTIR and UV-DRS analysis. The estimated optical band gap to be 2.842 eV- 2.538 eV. The imperfection conditions were exposed from the Ultraviolet and visible emissions of the PL spectra.