ENHANCEMENT IN OPTICAL PROPERTIES OF COBALT DOPED TiO2 NANOPARTICLES

Abstract

Cobalt doped titanium dioxide has consumed great consideration because of their photo catalytic activity and numerous utilizations in paints, white pigments and tooth paste. The co-precipitation technique was utilized in this present study to produce titanium dioxide nanoparticles using (TTIP) titanium tetra iso-propoxide and cobalt nitrate as a starting precursor. Cobalt doped TiO2nanoparticles were synthesized up to four to seven percent of cobalt composition. The Morphology of nanoparticles, crystal structure and optical characteristics were analyzed by XRD, UV-vis spectroscopy and scanning electron microscopy, respectively. Functional groups of cobalt doped TiO2 nanoparticles were confirmed by Fourier transform infrared spectroscopy (FTIR). The modified cobalt-doped titanium dioxide exhibits increased absorption in UV region as increasing cobalt content. The main purpose of this research is to enhance the photo catalytic activity and observe the dimensions, morphology and cobalt concentration as well as shape of prepared nanoparticles.