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Fabrication of Bi2MoO6/BiOI heterojunction photocatalysts for enhanced photodegradation of RhB

Published online by Cambridge University Press:  12 October 2018

Jie Wang ,
LiZhen Ren ,
DongEn Zhang Open the ORCID record for DongEn Zhang [Opens in a new window] ,
XiaoYun Hao ,
JunYan Gong ,
Xin Xiao ,
YouXiang Jiang  and
ZhiWei Tong Open the ORCID record for ZhiWei Tong [Opens in a new window]
Jie Wang
Affiliation:
Department of Chemical Engineering, Huaihai Institute of Technology, Lianyungang 222005, China
LiZhen Ren
Affiliation:
Department of Chemical Engineering, Huaihai Institute of Technology, Lianyungang 222005, China
DongEn Zhang*
Affiliation:
Department of Chemical Engineering, Huaihai Institute of Technology, Lianyungang 222005, China; Jiangsu Key Laboratory of Function Control Technology for Advanced Materials, Huaihai Institute of Technology, Lianyungang 222005, China; and School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
XiaoYun Hao
Affiliation:
Department of Chemical Engineering, Huaihai Institute of Technology, Lianyungang 222005, China
JunYan Gong
Affiliation:
Department of Chemical Engineering, Huaihai Institute of Technology, Lianyungang 222005, China
Xin Xiao
Affiliation:
Department of Chemical Engineering, Huaihai Institute of Technology, Lianyungang 222005, China
YouXiang Jiang
Affiliation:
Department of Chemical Engineering, Huaihai Institute of Technology, Lianyungang 222005, China
ZhiWei Tong*
Affiliation:
Department of Chemical Engineering, Huaihai Institute of Technology, Lianyungang 222005, China
*
a)Address all correspondence to these authors. e-mail: zdewxm@aliyun.com
b)e-mail: zhiweitong575@hotmail.com
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Abstract

The composites were synthesized by the reaction of Bi(NO3)3·5H2O, KI, and MoS2 and were prepared with different molar ratios of Bi/Mo (1:5, 1:2, 1:1, and 4:1) by altering the amount of bismuth nitrate pentahydrate. The phase composition and chemical bonds of the composites were characterized via X-ray diffraction and FT-IR, and the morphologies of the samples were characterized via scanning electron microscopy. With the increase of lanthanum source, the lamellar structure of the sample surface became more and more obvious. The results showed that the phase composition of the composites with different ratios of Bi/Mo was different. When the Bi/Mo reached 4:1, the composite material was Bi2MoO6/BiOI. The heterojunction structure formed between Bi2MoO6 and BiOI effectively promotes the separation of photogenerated electrons and holes and improved the photocatalytic activity. Therefore, the effect of the composites on the degradation of RhB was better than pure BiOI under the irradiation of a 350-W xenon lamp.

Keywords

Bi2MoO6BiOIcomposite materialsphotocatalytic properties
Type
Article
Information
Journal of Materials Research , Volume 33 , Issue 23 , 14 December 2018 , pp. 3928 - 3935
Copyright
Copyright © Materials Research Society 2018 

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