A mesoporous Pt/TiO2 nanoarchitecture with catalytic and photocatalytic functions

Xinchen Wang, Jimmy C. Yu*, Ho Yin Yip, Ling Wu, Po Keung Wong, Suk Yin LAI

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

144 Citations (Scopus)

Abstract

A novel metal/semiconductor nanocomposite with catalytic and photocatalytic functions has been prepared. The new material consists of highly dispersed platinum (Pt) nanoparticles embedded in a cubic mesoporous nanocrystalline anatase (meso-nc-TiO2) thin film. The porous thin film possesses a narrow pore-size distribution and a large surface area. The diameter of the Pt cluster can be controlled to below 5 nm, and the high dispersion of these clusters gives rise to catalytic activity for the oxidation of carbon monoxide, an important reaction for automobile exhaust treatment. This novel ordered mesoporous Pt/ TiO2 nanoarchitecture is also a promising photochemical material, as demonstrated by the photo-driven killing of Micrococcus lylae cells on the film.

Original languageEnglish
Pages (from-to)2997-3004
Number of pages8
JournalChemistry - A European Journal
Volume11
Issue number10
DOIs
Publication statusPublished - 6 May 2005

Scopus Subject Areas

  • Catalysis
  • Organic Chemistry

User-Defined Keywords

  • Heterogeneous catalysis
  • Mesoporous materials
  • Photocatalysis
  • Platinum
  • Thin films

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