Novel Ag3PO4/ZnFe2O4 composite photocatalyst with enhanced visible light photocatalytic activity

被引：32
作者：
Chen, Xiaojuan [1 ]
Dai, Youzhi [1 ]
Huang, Wenke [1 ]
机构：
[1] Xiangtan Univ, Dept Environm Sci & Engn, Xiangtan 411105, Peoples R China
来源：
MATERIALS LETTERS | 2015年 / 145卷
关键词：
Ag3PO4; ZnFe2O4; Semiconductors; Composite; Visible light photocatalysis; Organic; SEMICONDUCTOR; AG3PO4;
D O I：
10.1016/j.matlet.2015.01.097
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A novel Ag3PO4/ZnFe2O4 composite photocatalyst with enhanced photocatalytic activity was first synthesized via a solvothermal-liquid phase deposition method. Kinetic studies for the composite toward 2,4-dichlorophenol (2,4-DCP) photodegradation indicated that the Ag3PO4/ZnFe2O4 (mass ratio of Ag3PO4 to ZnFe2O4 is 9:1) showed an apparent rate constant of 0.0378 min(-1), which was 9.95 times that of ZnFe2O4 and 3.15 times that of Ag3PO4. Moreover, the mineralization rate of 2,4-DCP expressed by the removal rate of total organic carbon (Delta% TOC) reached approximately 48% during a 70-min irradiation. The photocatalytic mechanism of Ag3PO4/ZnFe2O4 is also discussed and the enhanced photocatalytic activity was attributed to the efficient separation of electron-hole pairs and the tailored size of the composite. (C) 2015 Elsevier B.V. All rights reserved.
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收藏
页码：125 / 128
页数：4
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