Preparation and properties of titania-Cs2.5H0.5PW12O40 hybrid films

Akira Nakajima, Shunsuke Matsui, Sayaka Yanagida, Yoshikazu Kameshima, Kiyoshi Okada

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Using continuous coating with Si-alkoxide as a binder, Cs2.5H0.5PW12O40 (Cs2.5) powder was prepared and immobilized onto a Pyrex glass plate. The Cs2.5 coating possessed an acid site on the film surface. Translucent TiO2-Cs2.5 hybrid films were prepared by laminating TiO2 films with holes on the Cs2.5 coating using phase-separation of alkoxide. Photocatalytic decomposition of 1,4-dioxane in water revealed that the holes serve as adsorption fields for ethylene glycol diformate, an intermediate with poor affinity to TiO2. The TiO2-Cs2.5 hybrid films produced by this process are candidates for purification of water containing several chemicals with a slow decomposition rate in photocatalysis.

Original languageEnglish
Pages (from-to)1133-1137
Number of pages5
JournalSurface and Coatings Technology
Volume203
Issue number9
DOIs
Publication statusPublished - Jan 25 2009
Externally publishedYes

Keywords

  • 1,4-dioxane
  • Cs2.5
  • Phase separation
  • Photocatalyst
  • TiO

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

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