耦合界面协同效应增强ZnS/MoS_(2)/Bi_(2)WO_(6)光催化剂光催化性能的研究  

On the Photocatalytic Performance of ZnS/MoS_(2)/Bi_(2)WO_(6)Photocatalyst Enhanced by Coupling Interface Synergistic Effect

作　　者：胡晓颖 李玙茜 李立恒 魏婧 梅蕊 HU Xiao-ying;LI Yu-qian;LI Li-heng;WEI-Jing;MEI-Rui(School of Chemistry and Environmental Engineering,Hanjiang Normal University,Shiyan 442000,China;Shiyan Key Laboratory of Biological Resources and Eco-environmental Protection(Hanjiang Normal University),Shiyan 442000,China)

机构地区：[1]汉江师范学院化学与环境工程学院,湖北十堰442000 [2]汉江师范学院生物资源与生态环境保护十堰市重点实验室,湖北十堰442000

出　　处：《汉江师范学院学报》2024年第6期22-28,共7页Journal of Hanjiang Normal University

基　　金：2024年汉江师范学院校基金项目“MoS_(2)/Bi_(2)WO_(6)异质界面调控及其光催化降解性能研究”(项目编号:2024B16)。

摘　　要：首先,在ZnS/MoS_(2)(ZM)表面原位生长Bi_(2)WO_(6),成功制备了3D/2D/2D ZnS/MoS_(2)/Bi_(2)WO_(6)(ZMB)复合材料.结果显示:由于ZMB三元异质结的形成和微观结构之间的协同效应,该复合材料具有良好的光催化性能,而起关键调节作用的是ZM的含量,9%ZMB对NOR的降解率达到83.29%.其次,在反应体系中分别加入EDTA-2Na、IPA和p-BQ通过自由基捕获实验,成功捕获h^(+)(空穴)、·OH(羟基自由基)和·O_(2)^(-)(超氧自由基),实验表明h^(+)是9%ZMB光降解NOR的主要活性物种,并探讨了降解污染物的可能机理.最后,通过生物毒性测试,验证在模拟可见光下,利用9%ZMB光催化降解液对微生物的影响.结果显示光催化后的降解液对菌体的毒性在逐渐减弱.The 3D/2D/2D ZnS/MoS_(2)/Bi_(2)WO_(6)(ZMB)composite was successfully prepared by in-situ growth of Bi_(2)WO_(6)on ZnS/MoS_(2)(ZM)surface.The results show that the content of ZM plays a key role in regulating the photocatalytic activity of ZMB composites.The degradation rate of 9%ZMB to NOR reached 83.29%.Through the free radical capture experiment,EDTA-2Na,IPA and p-BQ were added in the reaction system to capture h+(hole),·OH(hydroxyl radical)and·O 2-(superoxide radical),respectively,to study the radical active substances that play a major role in the composite material,and further explore the possible mechanism of photocatalytic degradation of pollutants.In addition,Escherichia coli was cultured by biotoxicity test to verify the effect of 9%ZMB photocatalytic degradation solution on microorganisms under simulated visible light.Due to the synergistic effect between the formation of ZMB ternary heterojunction and the microstructure,the composite has good photocatalytic performance and has a good application prospect in environmental purification.

关 键 词：光催化 异质结 协同效应 复合材料 生物毒性 

分 类 号：TB331[一般工业技术—材料科学与工程] O643.36[理学—物理化学]