Grape-like Bi2WO6/TiO2 hierarchical microspheres: A superior visible light photocatalyst with magnetic recycling property

被引：23
作者：
Liu, Zhi
Liu, Xinzhao
Lu, Dingze
Fang, Pengfei [1 ]
Wang, Shaojie
机构：
[1] Wuhan Univ, Sch Phys & Technol, Wuhan 430072, Peoples R China
来源：
MATERIALS LETTERS | 2014年 / 130卷
关键词：
Bi2WO6/TiO2; Semiconductors; Nanocomposites; Magnetic materials; Photocatalysis; PERFORMANCES; DEGRADATION; ROUTE;
D O I：
10.1016/j.matlet.2014.05.097
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Novel magnetic Bi2WO6/TiO2 hierarchical microspheres with grape-like morphology were successfully synthesized by a reliable and effective approach. The multifunctional composite microspheres compose of a magnetic core of Fe3O4@SiO2, and an outer shell of Bi2WO6/TiO2 heterostructure. The photocatalytic activities of the samples were evaluated by photodegradation of Rhodamine B (RhB) under visible light irradiation. It is discovered that the Fe3O4@SiO2@Bi2WO6/TiO2 (FSBT) composite microspheres exhibit superior photocatalytic activity, and the photocatalytic reaction rate reaches 0.0640 min(-1), which is 1.5 and 49.2 times greater than that of the Fe3O4@SiO2@Bi2WO6 (FSB) composites and the TiO2 (Degussa P25) nanopartides, respectively. Besides, the FSBT composite microspheres also present excellent magnetic recoverability. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：143 / 145
页数：3
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