Crystal facet modulation of Bi2WO6 microplates for spatial charge separation and inhibiting reverse reaction

Abraham Adenle; Hongpeng Zhou; Xiaoping Tao; Yue Zhao; Ming Shi; Bin Zeng; Jiangshan Qu; Rengui Li; Can Li

doi:10.1039/D1CC04942A

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Crystal facet modulation of Bi₂WO₆ microplates for spatial charge separation and inhibiting reverse reaction†

Abraham Adenle,^ab Hongpeng Zhou,^a Xiaoping Tao,^a Yue Zhao,^a Ming Shi,^ab Bin Zeng,^ab Jiangshan Qu,^ab Rengui Li

*^a and Can Li

*^a

Author affiliations

* Corresponding authors

^a State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Zhongshan Road 457, Dalian, China
E-mail: rgli@dicp.ac.cn, canli@dicp.ac.cn

^b University of Chinese Academy of Sciences, Beijing 100049, China

Abstract

We experimentally demonstrated that spatial charge separation can take place between the {010} and {001} facets of Bi₂WO₆ microplates. Further assembly of the reduction and oxidation cocatalysts leads to a remarkable enhancement of photocatalytic water oxidation activity in the presence of Fe³⁺ ions while the reverse oxidation of Fe²⁺ to Fe³⁺ ions is totally inhibited. The origin of the driving force is theoretically proven to be the difference in surface work function between the co-exposed facets, which shows a feasible strategy for developing efficient photocatalysts for solar energy conversion.

This article is part of the themed collections: 10th Anniversary of the Youth Innovation Promotion Association of the Chinese Academy of Science and 2021 Emerging Investigators

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Article information

DOI: https://doi.org/10.1039/D1CC04942A
Article type: Communication
Submitted: 02 Sep 2021
Accepted: 11 Oct 2021
First published: 11 Oct 2021

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Chem. Commun., 2021,57, 11637-11640

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Crystal facet modulation of Bi₂WO₆ microplates for spatial charge separation and inhibiting reverse reaction

A. Adenle, H. Zhou, X. Tao, Y. Zhao, M. Shi, B. Zeng, J. Qu, R. Li and C. Li, Chem. Commun., 2021, 57, 11637 DOI: 10.1039/D1CC04942A

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Chemical Communications