Real-time detection of photocatalytic hydrogen production for platinized titanium dioxide thin films in high vacuum

Kei Noda, Masashi Hattori, Kouichi Amari, Kei Kobayashi, Toshihisa Horiuchi, Kazumi Matsushige

Research output: Contribution to journalArticle

7 Citations (Scopus)


Photocatalytic hydrogen production was first detected in a high vacuum condition for platinum-loaded nanocrystalline anatase-titanium dioxide (TiO 2) thin films, using a newly developed monitoring system with a quadrupole mass spectrometer. In the presence of methanol of 10-6 Torr, partial pressures of hydrogen (H2) and formaldehyde (HCHO), generated due to the decomposition of methanol, were observed clearly to change simultaneously with the UV irradiation onto the TiO2 films. Photolysis of gas-phase water was also detected, thus revealing that this new method is capable to evaluate sensitively such the photocatalytic activities in high vacuum at a real-time scale.

Original languageEnglish
Pages (from-to)L749-L751
JournalJapanese Journal of Applied Physics, Part 2: Letters
Issue number29-32
Publication statusPublished - 2007 Aug 10
Externally publishedYes



  • Gaseous methanol and water
  • High vacuum
  • Photocatalyst
  • Real-time detection
  • Solar hydrogen production
  • Titanium dioxide

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy (miscellaneous)
  • Physics and Astronomy(all)

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