Photo-catalytic degradation of dimethyl disulfide on S and metal-ions co-doped TiO2 under visible-light irradiation

Yi Hsing Lin, Ting Ke Tseng, Hsin Chu

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38 Citations (Scopus)

Abstract

The sulfur and transition metal co-doped TiO2 catalysts were prepared by a sol-gel method. The physical and chemical properties of these photo-catalysts were characterized by thermo-gravimetric/differential-thermal analysis, X-ray diffraction, X-ray photoelectron spectroscopy, UV-vis, and Fourier transform-infrared spectroscopy. Compared to pure TiO2 and S/TiO2, sulfur and transition metal co-doped TiO2 catalysts have smaller crystal size and shift to visible-light absorption region. The XPS spectra confirm that V4+, Fe3+, and S 6+ are successfully doped into the lattice of TiO2, but Zn2+ is adsorbed on the surface of TiO2. S 0.05Zn0.001/TiO2 shows the best photocatalytic activity and S-VOCs tolerance for the degradation of dimethyl disulfide under visible irradiation. Several possible mechanisms have been developed for co-doped TiO2 under visible-light in this study.

Original languageEnglish
Pages (from-to)221-228
Number of pages8
JournalApplied Catalysis A: General
Volume469
DOIs
Publication statusPublished - 2014

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Process Chemistry and Technology

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