Novel TiO2 CVD films for semiconductor photocatalysis

A. Mills, N. Elliott, I.P. Parkin, S.A. O'Neill, R.J. Clark

Research output: Contribution to journalArticle

219 Citations (Scopus)

Abstract

A novel CVD film of titanium(IV) oxide has been prepared on glass, via the reaction of titanium(IV) chloride and ethyl acetate, using a CVD technique. The film is clear, very robust mechanically and comprised of a thin (24 nm) layer of nanocrystalline anatase titania that absorbs light of lambda < 360 nm. The film is active in terms of photo-induced superhydrophilicity, and thus its water contact angle is reduced markedly (from 61 to 11degrees) upon irradiation with ultra-bandgap light. The film is also active photocatalytically and is able to destroy a deposited layer of stearic acid upon exposure to ultra-bandgap light. The photo-induced superhydrophilic and photocatalytic activities of this film are compared with those for one comprised of P25 particles.
Original languageEnglish
Pages (from-to)171-179
Number of pages8
JournalJournal of Photochemistry and Photobiology A: Chemistry
Volume151
Issue number1-3
DOIs
Publication statusPublished - 23 Aug 2002

Keywords

  • titania
  • CVD
  • photocatalyst
  • superhydrophilicity
  • stearic acid

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