Photocatalytic activity of (sulfur, nitrogen)-codoped mesoporous TiO 2 thin films

Hui Li, Jinshu Wang, Hongyi Li, Shu Yin, Tsugio Sato

Research output: Contribution to journalArticlepeer-review

23 Citations (Scopus)

Abstract

Nitrogen and sulfur co-doped mesoporous TiO2 thin films were fabricated using thiourea as a doping resource by the combination of the sol-gel and evaporation-induced self-assembly (EISA) processes. Scanning electron microscopy (SEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), N2 adsorption-desorption, and UV-vis spectra were performed to characterize the assynthesized mesoporous TiO2 materials. The XPS result shows that O-Ti-N and O-Ti-S bonds in the (S, N)-codoped mesoporous TiO2 were formed. The resultant mesoporous (S, N)-codoped TiO 2 exhibited anatase framework with a high porosity and a narrow pore distribution. After being illuminated for 3 h, methyl orange (MO) could be degraded completely by the co-doped sample under the ultraviolet irradiation, whereas mesoporous TiO2 film without doping could only degrade 60% MO. After being illuminated by visible light, the water contact angles of the mesoporous co-doped TiO2 samples decreased slightly, but the pure TiO2 mesoporous film exhibited no change in the hydrophilicity.

Original languageEnglish
Pages (from-to)27-37
Number of pages11
JournalResearch on Chemical Intermediates
Volume36
Issue number1
DOIs
Publication statusPublished - 2010 Jan

Keywords

  • (S, N)-codoped
  • Mesoporous TiO
  • Photocatalyst

ASJC Scopus subject areas

  • Chemistry(all)

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