Highly Efficient Photocatalyst: TiO2 Microspheres Produced from TiO2 Nanosheets with a High Percentage of Reactive {001} Facets

被引：147

作者：

Zheng, Zhaoke ^{[1
]}

Huang, Baibiao ^{[1
]}

Qin, Xiaoyan ^{[1
]}

Zhang, Xiaoyang ^{[1
]}

Dai, Ying ^{[2
]}

Jiang, Minhua ^{[1
]}

Wang, Peng ^{[1
]}

Whangbo, Myung-Hwan ^{[3
]}

机构：

[1] Shandong Univ, State Key Lab Crystal Mat, Jinan 250100, Peoples R China

[2] Shandong Univ, Sch Phys, Jinan 250100, Peoples R China

[3] N Carolina State Univ, Dept Chem, Raleigh, NC 27695 USA

来源：

CHEMISTRY-A EUROPEAN JOURNAL | 2009年 / 15卷 / 46期

基金：

中国国家自然科学基金;

关键词：

nanostructures; photocatalysts; reactive facets; surface chemistry; titanium; VISIBLE-LIGHT; STABLE PHOTOCATALYST; TITANIA MICROSPHERES; ANATASE; SURFACE; NANOCRYSTALS; OXIDE; SPHERES; CELLS;

D O I：

10.1002/chem.200902438

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The TiO2 microspheres which are a new functional material with dominant (001) facets that offers both large surface area and good recyclability has been demonstrated. TiO2 microspheres have been studied owing to their unique optical properties and ease of recovery in practical applications. The X-ray diffraction (XRD) pattern of the products was obtained from the mixture of Ti(OBu)4 (10 ml), absolute ethanol (40 ml), and a solution 40% HF in deionized water (1.2 ml) for the reaction time tR=5.5 hours. Owing to their high surface area, recyclability, and excellent photocatalytic properties, the TiO2 micro- spheres are promising for practical applications as solar cells, catalyst supports, and water treatment engineering. The synthesized TiO2 microspheres exhibit a superior photocatalytic activity compared with Degussa P25.

引用

页码：12576 / 12579

页数：4

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