Photocatalytic decolorization of methylene blue dye by Ag3PO4-AgX (X = Cl-, Br- and I-) under visible light

被引：35
作者：
Amornpitoksuk, Pongsaton [1 ,2 ]
Suwanboon, Sumetha [3 ]
机构：
[1] Prince Songkla Univ, Dept Chem, Hat Yai 90112, Songkhla, Thailand
[2] Prince Songkla Univ, Ctr Excellence Innovat Chem, Fac Sci, Hat Yai 90112, Songkhla, Thailand
[3] Prince Songkla Univ, Fac Sci, Dept Mat Sci & Technol, Hat Yai 90112, Songkhla, Thailand
来源：
ADVANCED POWDER TECHNOLOGY | 2014年 / 25卷 / 03期
关键词：
Ag3PO4; Silver halides; Photocatalyst; Visible light; HIGHLY EFFICIENT; AGBR/AG3PO4; HYBRIDS; DEGRADATION; FACILE;
D O I：
10.1016/j.apt.2014.02.001
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
Three kinds of Ag3PO4-AgX (X = Cl-, Br- and I-) were prepared by the co-precipitation method between AgNO3 and Na2HPO4 + KX (X = Cl-, Br- and I-) solutions. Their photocatalytic activities were also investigated by decolorization of a methylene blue solution. Under visible light irradiation, photocatalytic decolorization of the dye using Ag3PO4-AgX as photocatalyst could occur by interaction between a hole in the valence band of the photocatalyst and the methylene blue dye molecules as it cannot detect the emission of 7-hydroxylcoumarin. AgCl and AgBr induce the Ag3PO4 to increase its photocatalytic decolorization efficiency. On the other hand, the compound Ag3PO4-AgI also showed a high adsorption for methylene blue in the dark. (C) 2014 The Society of Powder Technology Japan. Published by Elsevier B.V. and The Society of Powder Technology Japan. All rights reserved.
引用
收藏
页码：1026 / 1030
页数：5
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