光催化
X射线光电子能谱
异质结
降级(电信)
材料科学
可见光谱
辐照
化学工程
光降解
光化学
核化学
催化作用
化学
光电子学
有机化学
物理
核物理学
工程类
电信
计算机科学
作者
Xueyan Liu,Jianhua Shu,Haiyan Wang,Zao Jiang,Longjun Xu,Chenglun Liu
标识
DOI:10.1016/j.jpcs.2022.111061
摘要
The photocatalytic degradation of organic wastewater is a very promising strategy due to its high efficiency and no secondary pollution. Herein, the synthesis of a CoWO4/ZnWO4 p-n heterojunction and the photocatalytic removal of RhB has been reported. Characterization of the photocatalysts using XRD, FTIR, XPS, SEM and TEM confirmed that ZnWO4 nanoparticles were successfully attached to the CoWO4 nanosheets. More importantly, CZW-3 prepared with a CoWO4/ZnWO4 ratio of 1:3 displayed the highest photocatalytic activity, degrading RhB at a rate of 93% over 40 min, which is approximately 1.3-fold higher than pure ZnWO4. The creation of p-n heterojunctions, which strengthen the transmission of photogenerated carriers, is primarily responsible for the high photocatalytic activity observed. During the degradation process, the •O2− is the most important reactive species. Furthermore, a plausible photocatalytic mechanism has been discussed.
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