Flux-assisted synthesis of tungsten-doped layered perovskite oxychloride with promoted visible-light-responsive O2 evolution performance

Xiangyao Song; Shiwen Du; Xiangying Xing; Beibei Dong; Zhaochi Feng; Fei Cheng

doi:10.1039/D2CC05806E

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Flux-assisted synthesis of tungsten-doped layered perovskite oxychloride with promoted visible-light-responsive O₂ evolution performance†

Xiangyao Song,‡^a Shiwen Du,‡^b Xiangying Xing,‡^a Beibei Dong,

*^a Zhaochi Feng

^b and Fei Cheng*^a

Author affiliations

* Corresponding authors

^a School of Chemistry and Chemical Engineering, Hebei University of Technology, Tianjin 300130, China
E-mail: bbdong@hebut.edu.cn, fcheng@hebut.edu.cn

^b Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China

Abstract

Here, we successfully prepared Ba₂Bi₃Ta₂O₁₁Cl via a simple one-step molten salt method and adjusted its crystal morphology and structure, based on which the O₂-evolving activity was significantly improved. In addition, W doping promotes the charge separation efficiency, lowers the energy barrier for water oxidation reaction, and thus improves the activity. Finally, the optimized W-doped sample after molten salt treatment shows the best O₂ production activity (55 μmol h⁻¹) without loading any cocatalyst, which is 6 times higher than that of pristine Ba₂Bi₃Ta₂O₁₁Cl and 2 times higher than that of the undoped Ba₂Bi₃Ta₂O₁₁Cl treated with molten salt, respectively.

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Article information

DOI: https://doi.org/10.1039/D2CC05806E
Article type: Communication
Submitted: 26 Oct 2022
Accepted: 30 Dec 2022
First published: 02 Jan 2023

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Chem. Commun., 2023,59, 1225-1228

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Flux-assisted synthesis of tungsten-doped layered perovskite oxychloride with promoted visible-light-responsive O₂ evolution performance

X. Song, S. Du, X. Xing, B. Dong, Z. Feng and F. Cheng, Chem. Commun., 2023, 59, 1225 DOI: 10.1039/D2CC05806E

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Chemical Communications