Highly active and durable Bi2O3/TiO2 visible photocatalyst in flower-like spheres with surface-enriched Bi2O3 quantum dots

被引：119

作者：

Zhu, Jian ^{[1
]}

Wang, Shaohua ^{[1
]}

Wang, Jinguo ^{[1
]}

Zhang, Dieqing ^{[1
]}

Li, Hexing ^{[1
]}

机构：

[1] Shanghai Normal Univ, Dept Chem, Shanghai 200234, Peoples R China

来源：

APPLIED CATALYSIS B-ENVIRONMENTAL | 2011年 / 102卷 / 1-2期

基金：

中国国家自然科学基金;

关键词：

Flower-like Bi2O3/TiO2 spheres; Surface enriched Bi2O3 quantum dots; Visible light photocatalyst; Degradation of p-chlorophenol; TIO2; TITANIA; ANATASE; DEGRADATION; OXIDE; FABRICATION; TEMPLATES; POWDER; SILICA; FILMS;

D O I：

10.1016/j.apcatb.2010.11.032

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The flower-like Bi2O3/TiO2 visible photocatalyst with surface enrichment of Bi2O3 quantum dots was synthesized using a facile solvothermal process, which exhibited much higher activity than the Bi2O3/TiO2-IM prepared by impregnation method and the Bi2O3/TiO2-GR obtained by crushing the flower-like Bi2O3/TiO2. The high activity could be attributed to the enhanced light absorbance via multiple reflections in flower-like structure, the enhanced photosensitizing effect of the surface enriched Bi2O3 quantum dots and the strong interaction between Bi2O3 and TiO2. Moreover, the Bi2O3/TiO2 exhibited strong durability and could be reused for more than 10 times, which could be attributed to the high hydrothermal stability of the flower-like structure and the inhibition of Bi2O3 leaching owing to its strong interaction with TiO2. (C) 2010 Elsevier B.V. All rights reserved,

引用

页码：120 / 125

页数：6

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