A mesoporous Pt/TiO2 nanoarchitecture with catalytic and photocatalytic functions.
A mesoporous Pt/TiO2 nanoarchitecture with catalytic and photocatalytic functions.
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DOI：
10.1002/chem.200401248
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发表时间：
2005
期刊：
影响因子：
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通讯作者：
Xinchen Wang;Jimmy C. Yu;H. Yip;Ling Wu;P. Wong;S. Lai
中科院分区：
文献类型：
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作者：
Xinchen Wang;Jimmy C. Yu;H. Yip;Ling Wu;P. Wong;S. Lai
制备了一种具有催化和光催化功能的新型金属/半导体纳米复合材料。这种新材料由高度分散的铂纳米颗粒嵌入立方介孔纳米锐钛矿型(Meso-NC-Ti02)薄膜中组成。该多孔薄膜具有窄的孔径分布和较大的比表面积。铂团簇的直径可以控制在5 nm以下，这些团簇的高度分散性使其对一氧化碳氧化具有催化活性，一氧化碳氧化是汽车尾气处理的重要反应。这种新颖的有序介孔铂/二氧化钛纳米结构也是一种很有前途的光化学材料，光驱动杀灭薄膜上的莱拉微球菌细胞证明了这一点。
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.