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
收藏
页码：120 / 125
页数：6
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