光催化
光降解
降级(电信)
卤化物
复合数
钙钛矿(结构)
氧化物
化学工程
石墨烯
化学
材料科学
纳米技术
无机化学
催化作用
计算机科学
有机化学
复合材料
冶金
电信
工程类
作者
Qiang Huang,Jiaxin Liu,Fei Qi,Yayun Pu,Nan Zhang,Jiayu Yang,Zhiyu Liang,Changqing Tian
标识
DOI:10.1016/j.jece.2023.109960
摘要
The use of halide perovskites as photocatalysts has attracted more and more attention. However, the instability and toxicity of the lead halide perovskites have hindered their practical large-scale application. Herein, lead-free Cs2AgBiI6 double perovskite was synthesized by a simple antisolvent recrystallization approach for photocatalysis. Meanwhile, in order to solve the limited photocatalytic performance problem of the pure metal halide perovskites, for the first time, we designed and prepared highly stable Cs2AgBiI6-Graphene oxide (GO) composite photocatalyst. The photodegradation rate of Sudan Red III by Cs2AgBiI6-GO was found to be as high as 85% after 100 min of light irradiation, which was twice that of the pure Cs2AgBiI6 and also more efficient than recently reported photocatalysts under comparable conditions. This work demonstrated that the GO with unique physicochemical properties could prevent the photocatalyst agglomeration and provide charge carrier transport channel to inhibit electron-hole recombination to improve the overall photocatalytic performance.
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