A mesoporous Pt/TiO2 nanoarchitecture with catalytic and photocatalytic functions

被引：144

作者：

Wang, XC

Yu, JC ^{[1
]}

Yip, HY

Wu, L

Wong, PK

Lai, SY

机构：

[1] Chinese Univ Hong Kong, Environm Sci Programme, Shatin, Hong Kong, Peoples R China

[2] Chinese Univ Hong Kong, Dept Chem, Shatin, Hong Kong, Peoples R China

[3] Chinese Univ Hong Kong, Dept Biol, Shatin, Hong Kong, Peoples R China

[4] Hong Kong Baptist Univ, Dept Chem, Kowloon, Hong Kong, Peoples R China

来源：

CHEMISTRY-A EUROPEAN JOURNAL | 2005年 / 11卷 / 10期

关键词：

heterogeneous catalysis; mesoporous materials; photocatalysis; platinum; thin films;

D O I：

10.1002/chem.200401248

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

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.

引用

页码：2997 / 3004

页数：8

共 64 条

[1] General predictive syntheses of cubic, hexagonal, and lamellar silica and titania mesostructured thin films [J].