Photocatalytic degradation of RhB over MgFe2O4/TiO2 composite materials

被引：91

作者：

Zhang, Lei ^{[1
]}

He, Yiming ^{[2
]}

Wu, Ying ^{[1
]}

Wu, Tinghua ^{[1
]}

机构：

[1] Zhejiang Normal Univ, Inst Phys Chem, Jinhua 321004, Peoples R China

[2] Zhejiang Normal Univ, Coll Math Phys & Informat Engn, Dept Mat Phys, Jinhua 321004, Peoples R China

来源：

MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS | 2011年 / 176卷 / 18期

基金：

中国国家自然科学基金;

关键词：

Photocatalyst; Semiconductors; MgFe2O4/TiO2; Synergetic effect; HYDROGEN-PRODUCTION; RHODAMINE-B;

D O I：

10.1016/j.mseb.2011.09.022

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

MgFe2O4/TiO2 (MFO/TiO2) composite photocatalysts were successfully synthesized using a mixing-annealing method. The synthesized composites exhibited significantly higher photocatalytic activity than a naked semiconductor in the photodegradation of Rhodamine B. Under UV and visible light irradiation, the optimal percentages of doped MgFe2O4 (MFO) were 2 wt.% and 3 wt.%, respectively. The effects of calcination temperature on photocatalytic activity were also investigated. The origin of the high level of activity was discussed based on the results of X-ray diffraction, UV-vis diffuse reflection spectroscopy, scanning electron microscopy, transmission electron microscopy, and nitrogen physical adsorption. The enhanced activity of the catalysts was mainly attributed to the synergetic effect between the two semiconductors, the band potential of which matched suitably. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：1497 / 1504

页数：8

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