Processing and properties of transparent sulfated TiO2 thin films using sol-gel method

Akira Nakajima, Aiko Nakamura, Naoki Arimitsu, Yoshikazu Kameshima, Kiyoshi Okada

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)


For this study, transparent sulfated TiO2 thin films were prepared from Ti alkoxide. Vacuum ultraviolet illumination in air at 180 °C was demonstrated to be an effective pretreatment for reproducible preparation of crack-free sulfated TiO2 thin films. The film provides a high photoinduced wettability conversion rate and photocatalytic decomposition efficiency on gaseous n-hexane under proper conditions. This result is attributable to the accelerated decomposition of intermediates by a strong inorganic acid on the surface or to the resultant high quantum yield by suppressing the recombination between electrons and holes on the film surface.

Original languageEnglish
Pages (from-to)6392-6397
Number of pages6
JournalThin Solid Films
Issue number18
Publication statusPublished - Jul 31 2008
Externally publishedYes


  • Acidity
  • Photocatalysis
  • Sulfur
  • Titanium oxide

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Materials Chemistry


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