Titania and tungsten doped titania thin films on glass: active photocatalysts

A. Rampaul, I.P. Parkin, S.A. O'Neill, J. DeSouza, A. Mills, N. Elliott

Research output: Contribution to journalArticlepeer-review

152 Citations (Scopus)

Abstract

Acidification of an isopropanol solution containing mixtures of [Ti(OPri)(4)] and [W(OEt)(5)] produced solutions from which various TiO2, WO3 and TiO2/WO3 thin films could be obtained by dip coating and annealing. The films were analysed by X-ray diffraction, SEM/EDAX, Raman, electronic spectra, contact angle and photoactivity with respect to destruction of an over layer of stearic acid. The TiO2/WO3 films were shown to be mixtures of two phases TiO2 and WO3 rather than a solid solution TixWyO2. The 2% tungsten oxide doped titania films were shown to be the most effective photocatalysts. All of the TiO2 and TiO2/WO3 films showed light induced superhydrophillicity.
Original languageEnglish
Pages (from-to)35-44
Number of pages9
JournalPolyhedron
Volume22
Issue number1
DOIs
Publication statusPublished - 1 Jan 2003

Keywords

  • titania
  • photocatalyst
  • electronic spectra
  • stearic acid

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