Visible light responses of sulfur-doped rutile titanium dioxide photocatalysts fabricated by anodic oxidation

Yoshiteru Mizukoshi, Naofumi Ohtsu, Satoshi Semboshi, Naoya Masahashi

Research output: Contribution to journalArticle

64 Citations (Scopus)

Abstract

Anodic oxides on pure titanium provide rutile-structured TiO2 photocatalysts with sub-micron pores. The photocatalysts effectively bleached methylene blue aqueous solution under visible light illumination with wavelengths longer than 413 nm. Auger electron spectroscopy and infrared absorption analyses revealed the presence of sulfur in the anodized oxide. The sulfur doping appears to play an important role in response to visible light by narrowing the band gap of pristine TiO2.

Original languageEnglish
Pages (from-to)152-156
Number of pages5
JournalApplied Catalysis B: Environmental
Volume91
Issue number1-2
DOIs
Publication statusPublished - 2009 Sep 7

Keywords

  • Anodic oxidation
  • Rutile
  • Sulfur doping
  • Titanium dioxide
  • Visible light response

ASJC Scopus subject areas

  • Catalysis
  • Environmental Science(all)
  • Process Chemistry and Technology

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