卤化物
分子筛
钙钛矿(结构)
光催化
材料科学
复合数
铋
化学工程
无机化学
化学
催化作用
复合材料
有机化学
冶金
工程类
作者
Zihao Cui,Peng Wang,Yaqiang Wu,Xiaolei Liu,Guoqiang Chen,Peng Gao,Qianqian Zhang,Zeyan Wang,Zhaoke Zheng,Hefeng Cheng,Yuanyuan Liu,Ying Dai,Baibiao Huang
标识
DOI:10.1016/j.apcatb.2022.121375
摘要
A facile and effective impregnation method is employed to synthesize the space-confined growth of lead-free halide perovskite Cs3Bi2Br9 in MCM-41 molecular sieve. This MCM-41 @CBB (Cs3Bi2Br9) composite shows an outstanding performance for the photocatalytic reduction of CO2 to CO at the gas−solid condition under visible-light irradiation. The CO production rate of the MCM-41 @ 50 wt% CBB is determined to be 17.24 μmol g−1 h−1, which greatly exceeds that of pure CBB (1.89 μmol g−1 h−1). The composite is highly stable showing no apparent decrease in the catalytic activity after 8 cycles of repeated experiment. The performance of space-confined growth of CBB nanoparticles in the serial molecular sieve exhibits 2.97–13.4 fold higher than that of pure CBB, respectively, which is superb than CPB (CsPbBr3) and MCM-41 @CPB prepared in the same condition. The results are comparable with those reported for many lead halide perovskites, and are in the top among the lead-free perovskites, especially bismuth halide perovskites.
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