2D/2D type-Ⅱ Cu2ZnSnS4/Bi2WO6 heterojunctions to promote visible-light-driven photo-Fenton catalytic activity

作     者：Li Guo Kailai Zhang Xuanxuan Han Qiang Zhao Yuanyuan Zhang Mian Qi Danjun Wang Feng Fu 郭莉;张开来;韩宣宣;赵强;张媛媛;戚勉;王丹军;付峰

作者机构：Shaanxi Key Laboratory of Chemical Reaction EngineeringCollege of Chemistry&Chemical EngineeringYan’an UniversityYan’an 716000ShaanxiChina 

出 版 物：《Chinese Journal of Catalysis》 (催化学报（英文）)

年 卷 期：2020年第41卷第3期

页      面：503-513页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 0817[工学-化学工程与技术] 070304[理学-物理化学(含∶化学物理)] 08[工学] 0703[理学-化学] 

基　　金：supported by the National Natural Science Foundation of China(21663030,21666039) the Open Project of State Key Laboratory of Organic-Inorganic Composites Beijing Key Laboratory,Beijing University of Chemical Technology(oic-201901009) the Project of Science&Technology Office of Shannxi Province(2018TSCXL-NY-02-01,2013K11-08,2013SZS20-P01) Industrial Key Project of Yan’an Science and Technology Bureau(2018KG-04) the Project of Yan’an Science Graduate Innovation Project of Yan’an University(YCX201988)~~ 

主　　题：Cu2ZnSnS4 Bi2WO6 2D/2D type-Ⅱheterojunction Photo-Fenton Photocatalysis 

摘      要：In this work,a set of novel Cu2ZnSnS4/Bi2WO6(CZTS/BWO)two-dimensional(2 D)/two-dimensional(2 D)type-Ⅱheterojunctions with different CZTS weight ratios(1%,2%,and 5%)were successfully synthesized via a brief secondary solvothermal *** successful formation of the heterojunctions was affirmed by characterization methods such as X-ray photoelectron spectroscopy and high-resolution transmission electron *** photocatalytic activity results showed that the prepared CZTS/BWO heterojunctions had excellent photocatalytic behaviors for organic degradation,especially when the mass fraction of CZTS with respect to BWO in the composite was 2%.Moreover,the addition of hydrogen peroxide(H2O2)could further improve the dye and antibiotic degradation *** reinforced photocatalytic and photo-Fenton degradation performance were primarily attributable to the introduction of BWO,which afforded increased active sites,expanded the solar spectral response range,and accelerated the cycle of Cu(Ⅱ)/Cu(Ⅰ);after four cycling times,its catalytic activity did not decrease *** addition,reasonable hypotheses of the photocatalytic and photo-Fenton catalytic mechanisms were *** study is expected to provide a visual approach for designing a novel photo-Fenton catalyst to jointly utilize the photocatalytic and Fenton activities,which can be better applied to the purification of residual organics in wastewater.