光催化
材料科学
钙钛矿(结构)
量子点
复合数
卤化物
化学工程
纳米技术
聚合物
纳米晶
半导体
光诱导电荷分离
载流子
光电子学
人工光合作用
复合材料
无机化学
化学
催化作用
有机化学
工程类
作者
Li Liang,Zhijie Zhang,Cheng Ding,Jiayue Xu
标识
DOI:10.1016/j.cej.2021.129543
摘要
The suitable band structure and exceptional light harvesting abilities render lead halide perovskite (LHP) nanocrystals promising alternative for photocatalytic CO2 reduction. However, pristine LHPs usually exhibit unsatisfactory photocatalytic activity in CO2 reduction due to the high radiative recombination, low charge separation, and insufficient stability. To overcome these obstacles, herein, a poly(3-hexylthiophene-2,5-diyl) (P3HT)/CsPbBr3 composite was fabricated by encapsulating the CsPbBr3 quantum dots (QDs) into a P3HT conducting polymer, which could act as a protective layer as well as a hole transporter. Owing to the efficient charge transfer brought by the synergic effect between the two components, the P3HT/CsPbBr3 composite exhibited outstanding photocatalytic performance in CO2 reduction, with an electron consumption rate high up to 475.3 μmol g−1 h−1, which was approximately 10-times higher than that of pristine CsPbBr3 QDs. Our study provides new insight into the design and fabrication of conducting polymers/LHP heterogeneous photocatalysts, which show great potentials in artificial photosynthesis.
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