The Role of Surface Termination in Halide Perovskites for Efficient Photocatalytic Synthesis

Yuanyuan Dong; Kailin Li; Wenjia Luo; Cheng Zhu; Haoliang Guan; Hao Wang; Lanning Wang; Kailin Deng; Huanping Zhou; Haipeng Xie; Yang Bai; Yujing Li; Qi Chen

doi:10.1002/anie.202002939

The Role of Surface Termination in Halide Perovskites for Efficient Photocatalytic Synthesis

Yuanyuan Dong, Kailin Li, Wenjia Luo, Cheng Zhu, Haoliang Guan, Hao Wang, Lanning Wang, Kailin Deng, Huanping Zhou, Haipeng Xie, Yang Bai, Yujing Li^*, Qi Chen^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

30 Citations (Scopus)

Abstract

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 MAPbI₃. By rational design of the surface termination for MAPbI₃, the production rate of butyl lactate is substantially improved to 7719 μg g⁻¹ cat. h⁻¹ under visible-light illumination. The MAI-terminated MAPbI₃ 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 MAPbI₃, which facilitates carrier transport and thus photosynthesis.

Original language	English
Pages (from-to)	12931-12937
Number of pages	7
Journal	Angewandte Chemie - International Edition
Volume	59
Issue number	31
DOIs	https://doi.org/10.1002/anie.202002939
Publication status	Published - 27 Jul 2020

Keywords

halide perovskite
iodide vacancies
photocatalysis
surface termination
triose

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title = "The Role of Surface Termination in Halide Perovskites for Efficient Photocatalytic Synthesis",

abstract = "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 MAPbI3. By rational design of the surface termination for MAPbI3, the production rate of butyl lactate is substantially improved to 7719 μg g−1 cat. h−1 under visible-light illumination. The MAI-terminated MAPbI3 surface governs the photocatalytic performance. Specially, MAI-terminated surface is susceptible to iodide oxidation, which thus promotes the exposure of PbII as active sites for this photocatalysis process. Moreover, MAI-termination induces a p-doping effect near the surface for MAPbI3, which facilitates carrier transport and thus photosynthesis.",

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author = "Yuanyuan Dong and Kailin Li and Wenjia Luo and Cheng Zhu and Haoliang Guan and Hao Wang and Lanning Wang and Kailin Deng and Huanping Zhou and Haipeng Xie and Yang Bai and Yujing Li and Qi Chen",

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AU - Dong, Yuanyuan

AU - Li, Kailin

AU - Luo, Wenjia

AU - Zhu, Cheng

AU - Guan, Haoliang

AU - Wang, Hao

AU - Wang, Lanning

AU - Deng, Kailin

AU - Zhou, Huanping

AU - Xie, Haipeng

AU - Bai, Yang

AU - Li, Yujing

AU - Chen, Qi

PY - 2020/7/27

Y1 - 2020/7/27

N2 - 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 MAPbI3. By rational design of the surface termination for MAPbI3, the production rate of butyl lactate is substantially improved to 7719 μg g−1 cat. h−1 under visible-light illumination. The MAI-terminated MAPbI3 surface governs the photocatalytic performance. Specially, MAI-terminated surface is susceptible to iodide oxidation, which thus promotes the exposure of PbII as active sites for this photocatalysis process. Moreover, MAI-termination induces a p-doping effect near the surface for MAPbI3, which facilitates carrier transport and thus photosynthesis.

AB - 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 MAPbI3. By rational design of the surface termination for MAPbI3, the production rate of butyl lactate is substantially improved to 7719 μg g−1 cat. h−1 under visible-light illumination. The MAI-terminated MAPbI3 surface governs the photocatalytic performance. Specially, MAI-terminated surface is susceptible to iodide oxidation, which thus promotes the exposure of PbII as active sites for this photocatalysis process. Moreover, MAI-termination induces a p-doping effect near the surface for MAPbI3, which facilitates carrier transport and thus photosynthesis.

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The Role of Surface Termination in Halide Perovskites for Efficient Photocatalytic Synthesis

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