title: A mesoporous Pt/TiO2 nanoarchitecture with catalytic and photocatalytic functions.
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.
authors.affiliation: Environmental Science Programme, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China.
authors.forename: Xinchen
authors.initials: X
authors.lastname: Wang
authors.forename: Jimmy C
authors.initials: JC
authors.lastname: Yu
authors.forename: Ho Yin
authors.initials: HY
authors.lastname: Yip
authors.forename: Ling
authors.initials: L
authors.lastname: Wu
authors.forename: Po Keung
authors.initials: PK
authors.lastname: Wong
authors.forename: Suk Yin
authors.initials: SY
authors.lastname: Lai