Ce^(3+)掺杂ZnO光催化性能的研究  

The study of Ce^(3+)-doped ZnO on photocatalytic properties

作　　者：刘瑞杰 富笑男[1] 郭叶飞 王超 张进峰 刘利鑫 LIU Ruijie;FU Xiaonan;GUO Yefei;WANG Chao;ZHANG Jinfeng;LIU Lixin(College of Science,Henan University of Technology,Zhengzhou 450000,China)

机构地区：[1]河南工业大学理学院,郑州450000

出　　处：《功能材料》2022年第11期11184-11191,共8页Journal of Functional Materials

基　　金：河南省科技创新杰出青年资助项目(114100510009)。

摘　　要：研究通过水热法制备了不同浓度Ce^(3+)掺杂ZnO纳米材料。采用X射线衍射仪(XRD)、扫描电子显微镜(SEM)、透射电子显微镜(TEM)、X射线能谱分析(EDS)、光致发光光谱(PL)、比表面积(BET)等分析技术对所制备的样品进行了表征。其中,XRD证实了Ce^(3+)的成功掺杂,PL显示Ce^(3+)掺杂抑制了电子-空穴对的复合,BET发现Ce^(3+)掺杂增大了ZnO的比表面积。在模拟日光条件下,对罗丹明B(RhB)水溶液进行光降解实验。实验结果表明,所有Ce^(3+)掺杂样品的光催化性能都优于未掺杂的ZnO,并且发现Ce^(3+)掺杂浓度为0.1%时,其光催化性能最佳,光催化RhB的降解率达到95.6%。同时对Ce^(3+)掺杂ZnO的光催化机理提出了解释。In this study,Ce^(3+)-doped ZnO nanomaterials with different concentrations were prepared by hydrothermal method.The prepared samples were characterized by X-ray diffractometer(XRD),scanning electron microscope(SEM),transmission electron microscope(TEM),energy dispersive spectrometer(EDS),photoluminescence(PL),and Brunauer Emmett Teller(BET).Among them,XRD confirmed the successful doping of Ce^(3+),PL showed that Ce^(3+)-doped inhibited the recombination of electron-hole pairs,and BET found that Ce^(3+)-doped increased the specific surface area of ZnO.Photodegradation experiments were performed on aqueous solutions of Rhodamine B(RhB)under simulated daylight conditions.The experiments results showed that the photocatalytic performance of all Ce^(3+)-doped samples was better than that of undoped ZnO.It was found that the sample(.1%Ce^(3+)doped ZnO)exhibited the best photocatalytic performance(degradation efficiency of 95.6%).The photocatalytic mechanism of Ce^(3+)-doped ZnO was also presented.

关 键 词：氧化锌 Ce^(3+)掺杂ZnO 水热法 光催化 

分 类 号：TQ462.7[化学工程—制药化工]