Synthesis, Characterization and Photo Catalytic Application of TiO2 Co-doped with Pt+4, Au+4 and S-2

TiO2 singly doped and Co-doped nanoparticles with Pt+4, Au+4, and S-2 ions were prepared by modified Sol-Gel method. These samples characterized by Uv-visible adsorption spectroscopy and showed red-shift in absorption band of TiO2, XRD. showed clear anatase for all modified samples except the Au- TiO2. AFM and SEM were used to study the morphology of the samples. The photocatalytic degradation of Para-Nitrophenol (P-NP) under visible irradiation was examined for the doped and Co-doped samples. The results shown degradation rates for singly doped in the order of: Au-TiO2 ˃ Au,Pt- TiO2˃ Pt-TiO2 ˃ Au,S-TiO2 ˃ Pt,S-TiO2˃ S-TiO2 ˃ undoped TiO2 sample.