Ag2CrO4/ZnO composite photocatalyst with high catalytic performance was prepared by precipitation method.The structure and morphology of the catalyst were characterized by XRD,SEM,TEM,XPS and UV-Vis.The photocatalytic performance and stability of the photocatalyst were investigated by visible light photocatalytic degradation of organic dyes (RhB).The results shown that Ag2CrO4 was uniformly attached to ZnO nanorods.When the composite molar ratio of Ag2CrO4 to ZnO is 1:2,the catalyst exhibits the best photocatalytic performance,and the degradation rate of RhB can reach 86% within 90min.After 5 cycles of experiments,the degradation rate of RhB was still up to 82%,while pure Ag2CrO4 was only 24%.The research shown that the excellent photocatalytic activity and stability of Ag2CrO4/ZnO were mainly due to the stable loading between Ag2CrO4 and ZnO,which can effectively separate photogenerated electrons and holes,reduced the active sites and improved the photocatalytic activity and stability of the catalyst.
Huang Fengping, Li Chunhua, Xin Meng, Liu Boxue, Zhou Xinmin, Ding Li
. Preparation and photocatalytic performance of Ag2CrO4/ZnO composite photocatalyst[J]. New Chemical Materials, 2020
, 48(9)
: 105
-110
.
DOI: 10.19817/j.cnki.issn 1006-3536.2020.09.023
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