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The Role of Surface Termination in Halide Perovskites for Efficient Photocatalytic Synthesis
Author(s) -
Dong Yuanyuan,
Li Kailin,
Luo Wenjia,
Zhu Cheng,
Guan Haoliang,
Wang Hao,
Wang Lanning,
Deng Kailin,
Zhou Huanping,
Xie Haipeng,
Bai Yang,
Li Yujing,
Chen Qi
Publication year - 2020
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.202002939
Subject(s) - photocatalysis , halide , materials science , perovskite (structure) , iodide , photochemistry , semiconductor , catalysis , optoelectronics , chemistry , inorganic chemistry , organic chemistry
Halide perovskites have received attention in the field of photocatalysis owing to their excellent optoelectronic properties. However, the semiconductor properties of halide perovskite surfaces and the influence on photocatalytic performance have not been systematically clarified. Now, the conversion of triose (such as 1,3‐dihydroxyacetone (DHA)) is employed as a model reaction to explore the surface termination of MAPbI 3 . By rational design of the surface termination for MAPbI 3 , the production rate of butyl lactate is substantially improved to 7719 μg g −1 cat. h −1 under visible‐light illumination. The MAI‐terminated MAPbI 3 surface governs the photocatalytic performance. Specially, MAI‐terminated surface is susceptible to iodide oxidation, which thus promotes the exposure of Pb II as active sites for this photocatalysis process. Moreover, MAI‐termination induces a p‐doping effect near the surface for MAPbI 3 , which facilitates carrier transport and thus photosynthesis.