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