核-壳异质结构ZnO/ZnS复合材料的光催化性能  

The Photocatalytic Performance of Core-Shell Heterostructure ZnO/ZnS Composites

作　　者：何志远 王天维 李金龙 朱昱行 龚凌耀 李奕怀[1] HE Zhiyuan;WANG Tianwei;LI Jinlong;ZHU Yuxing;GONG Lingyao;LI Yihuai(School of Energy and Materials,Shanghai Polytechnic University,Shanghai 201209,China)

机构地区：[1]上海第二工业大学能源与材料学院,上海201209

出　　处：《上海第二工业大学学报》2024年第3期247-253,共7页Journal of Shanghai Polytechnic University

基　　金：企业合作项目(C80NC230020)资助。

摘　　要：为提高ZnO光催化有机废水处理效率,运用水热法结合离子交换法制备了核-壳异质结构的ZnO/ZnS复合材料,并评估其在甲基橙有机废水处理中的催化性能。经XRD、SEM和TEM表征,证实已成功制备了具有棒状核-壳异质结构的ZnO/ZnS复合材料,并初步探讨了其形成机理。实验结果表明,随着离子交换时间的增加,ZnS逐渐包覆于棒状ZnO结构表面,形成核-壳异质结构。此结构不仅拓宽了ZnO的光谱吸收范围,还提高了其催化性能。当光照反应时间达到180 min时,ZnO/ZnS复合材料对甲基橙的降解率达到80.05%,较纯ZnO催化剂提高了30%。核-壳异质结构的ZnO/ZnS复合材料为进一步提升ZnO光催化技术在有机废水处理中的应用效果提供了一种新的途径。In order to enhance the effect of ZnO photocatalytic organic wastewater,ZnO/ZnS composites with core-shell heterostructure were prepared by hydrothermal method combined with ion exchange technique,and their catalytic degradation of methyl orange organic wastewater was investigated.By XRD,SEM,TEM characterization,it was confirmed that ZnO/ZnS composites with rod-core-shell heterostructure were prepared successfully,and the formation mechanism was preliminarily discussed.The experimental results show that with the increase of ion exchange time,ZnS gradually formed core-shell heterostructure on the rod-shaped ZnO surface.The structure not only broadens the spectral absorption range of ZnO,but also improves its catalytic performance.When the reaction time reaches 180 min,the methyl orange degradation rate of ZnO/ZnS composites reaches 80.05%,which is 30%higher than that of pure ZnO catalyst.ZnO/ZnS composites with core-shell heterostructure provide a new method for further improving the application effect of ZnO photocatalysis technology in organic wastewater treatment.

关 键 词：核-壳结构 水热法 离子交换法 光催化 

分 类 号：X506[环境科学与工程—环境工程]