A Mesoporous Pt/TiO2 Nanoarchitecture with Catalytic and Photocatalytic Functions
- 1 January 2005
- journal article
- research article
- Published by Wiley in Chemistry – A European Journal
- Vol. 11 (10) , 2997-3004
- https://doi.org/10.1002/chem.200401248
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.Keywords
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