纳米片构建的花状ZnO和CdS/ZnO复合物的制备及其光催化性能测试  

Synthesis and photocatalytic performance of flower-like ZnO and CdS/ZnO assembled with nanoflakes

作　　者：张丽惠[1] 韦致远 王攀[1] 王俊海[1] ZHANG Li-hui;WEI Zhi-yuan;WANG Pan;WANG Jun-hai(School of Materials and Chemical Engineering,Chuzhou University,Anhui 239000,China)

机构地区：[1]滁州学院材料与化学工程学院,安徽滁州239000

出　　处：《化学研究与应用》2020年第4期584-590,共7页Chemical Research and Application

基　　金：安徽省高校自然科学研究一般项目(KJ2018B14)资助;安徽省高校优秀青年人才支持计划重点项目(gxyq2019095)资助。

摘　　要：在乙二醇(EG)和水组成的二元溶剂热体系中,通过Zn(NO3)2·6H2O和尿素的水热反应及其后续的退火处理,制备了纳米片组装的花状ZnO。以花状ZnO为基底,采用直接沉淀法,制备了CdS/ZnO复合物。在可见光照射下,研究了所制备的ZnO和CdS/ZnO复合物降解结晶紫水溶液的光催化性能。结果表明,相对于ZnO,CdS/ZnO复合物在400~700 nm区间产生了新的吸收,对结晶紫可见光降解具有好的催化效果,此外,CdS/ZnO复合物作为光催化剂具有较好的稳定性和重复使用性,可望用于污水处理。Flower-like ZnO assembled from nanoflakes were synthesized via a hydrothermal reaction of Zn(NO3)2·6H2O with urea in ethylene glycol(EG)and de-ionized water solvotheral system and subsequent annealing.CdS/ZnO composites were fabricated using the method of direct sedimentation based on the flower-like ZnO.The photocatalytic performance of the as-prepared ZnO and CdS/ZnO composites for the degradation of crystal violet aqueous solution was studied under visible light irradiation.The result shows that CdS/ZnO composite produces new absorption in the 400-700 nm range,and the photocatalytic performance is significantly enhanced compared with that of ZnO microflowers,besides,the as-prepared CdS/ZnO composite shows some stability and reusability as photocatalyst,which is expected to be useful in the treatment of wastewaters.

关 键 词：ZnO微米花 CdS/ZnO复合物 结晶紫 可见光 

分 类 号：O614.12[理学—无机化学]