Construction of Ag/Bi2WO6/BiOCl with enhanced photocatalytic performance for efficient degradation of organic pollutant

被引:13
作者
Wang, Haitao [1 ,3 ]
Shi, Baoxu [1 ]
Liu, Yueqin [1 ]
Guo, Jianfeng [2 ]
Chang, Na [2 ,3 ]
Zhao, Xiaoxu [1 ,2 ]
机构
[1] Tiangong Univ, Sch Environm Sci & Engn, Tianjin 300387, Peoples R China
[2] Tiangong Univ, Sch Chem Engn & Technol, Tianjin 300387, Peoples R China
[3] Tiangong Univ, State Key Lab Separat Membranes & Membrane Proc, Tianjin 300387, Peoples R China
关键词
Bi2WO6; BiOCl; MBT; Ag NPs; Photocatalytic mechanism; BIOCL NANOSHEETS; 2-MERCAPTOBENZOTHIAZOLE; NANOPARTICLES; REDUCTION; INSIGHTS; CO2;
D O I
10.1016/j.inoche.2023.110816
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
In this study, a ternary composite photocatalyst (Ag/Bi2WO6/BiOCl) is synthesized via using hydrothermal and photo-reduction methods. The results of SEM and TEM showed that Ag/Bi2WO6/BiOCl exhibited a stacked layered structure. The Ag/Bi2WO6/BiOCl composite photocatalyst showed outstanding degradation activity of 2-mercaptobenzothiazole (MBT) under visible light, and the degradation rate reached 93.1% within 25 min, which is 3.3 and 3.9 times higher than pure Bi2WO6 and BiOCl. The synergy between Bi2WO6/BiOCl and the Ag nanoparticles (Ag NPs) effectively promoted visible light absorption and reduced the recombination efficiency of photogenerated electron-holes, indicating the enhanced photocatalytic activity of Ag/Bi2WO6/BiOCl composite photocatalyst. The possible charge transfer mechanism of Ag/Bi2WO6/BiOCl is proposed.
引用
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页数:9
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