Chemical Science International Journal

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

Dina A. Ali

Department of Chemistry, College of Science, Al-Mustansiriyah University, Baghdad, Iraq

Hussain I. Abdulah

Department of Chemistry, College of Science, Al-Mustansiriyah University, Baghdad, Iraq

Ramzi R. Alani *

Department of Chemistry, College of Science, Al-Mustansiriyah University, Baghdad, Iraq

*Author to whom correspondence should be addressed.

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Abstract

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.

 

Keywords: Titanium dioxide, nanoparticles, co-doped, sol-gel method, P-Np photo degradation

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