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A Mesoporous Pt/TiO 2 Nanoarchitecture with Catalytic and Photocatalytic Functions
Author(s) -
Wang Xinchen,
Yu Jimmy C.,
Yip Ho Yin,
Wu Ling,
Wong Po Keung,
Lai Suk Yin
Publication year - 2006
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.200401248
Subject(s) - mesoporous material , photocatalysis , materials science , catalysis , nanocrystalline material , anatase , nanocomposite , chemical engineering , platinum , nanoparticle , nanotechnology , carbon monoxide , nanocrystal , thin film , organic chemistry , chemistry , engineering
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‐TiO 2 ) 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/TiO 2 nanoarchitecture is also a promising photochemical material, as demonstrated by the photo‐driven killing of Micrococcus lylae cells on the film.