Fabrication of ternary dual Z-Scheme AgI/ZnIn2S4/BiVO4 heterojunction photocatalyst with enhanced photocatalytic degradation of tetracycline under visible light

被引:19
作者
Wang, Shuhang [1 ]
Zhao, Li [1 ]
Gao, Luning [2 ]
Yang, Daiqiong [2 ]
Wen, Sijie [2 ]
Huang, Wei [1 ,3 ]
Sun, Zexin [4 ]
Guo, Jifeng [4 ]
Jiang, Xia [1 ]
Lu, Changyu [2 ,4 ]
机构
[1] Chinese Res Inst Environm Sci, Natl Engn Lab Lake Pollut Control & Ecol Restorat, Beijing 100012, Peoples R China
[2] Hebei Geo Univ, Dept Water Resource & Environm, Hebei Prov Collaborat Innovat Ctr Sustainable Uti, Hebei Prov Key Lab Sustained Utilizat & Dev Water, 136 Huaian Rd, Shijiazhuang 050031, Hebei, Peoples R China
[3] Donghua Univ, Coll Environm Sci & Engn, State Environm Protect Engn Ctr Pollut Treatment, Shanghai 201620, Peoples R China
[4] Changan Univ, Sch Water & Environm, Key Lab Subsurface Hydrol & Ecol Arid Areas, Minist Educ, 126 Yanta Rd, Xian 710054, Shaanxi, Peoples R China
基金
中国国家自然科学基金;
关键词
Photocatalysis; AgI/ZnIn2S4/BiVO4; Dual Z-Scheme heterojunction; Tetracycline; H-2; EVOLUTION; EFFICIENT; BIVO4; HETEROSTRUCTURE; NANOCOMPOSITE; PERFORMANCE; COMPOSITES;
D O I
10.1016/j.arabjc.2022.104159
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
In this study, a novel ternary AgI/ZnIn2S4/BiVO4(AZB) composite photocatalyst was successfully prepared by hydrothermal method and in-situ precipitation method. The assynthesized samples were characterized by XRD, SEM, TEM, XPS and so on, and the photocatalytic activity was evaluated through photocatalytic degradation of tetracycline (TC) under visible light irradiation. When the molar ratio of Bi to Ag was 1:1, the degradation rate of TC can reach 91.44 % within 150 min. The AZB heterojunction demonstrated outstanding efficiency with the apparent reaction rate constants of 0.02118 min(-1) for TC removal, was 4.68, 3.27 and 3.27 times higher than that of pure BiVO4, AgI and ZnIn2S4. Based on active species trapping experiments and ESR analysis, a dual Z-Scheme pathways among BiVO4, AgI and ZnIn2S4 for effective separation of photogenerated charges was recommended. This work provided a promising insight for the design of ternary dual Z-scheme heterojunction with multilevel electron transfer to present greater photo-absorption, charge separation, and photodegradation for environmental decontamination. (C) 2022 The Author(s). Published by Elsevier B.V. on behalf of King Saud University.
引用
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页数:12
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