In situ integration of a cocatalyst and heterojunction to a WO3 photoanode with enhanced photoelectrochemical performance via phosphatization

Faqi Zhan; Haiyan Zhao; Guochang Wen; Zhiqing Ma; Yisi Liu; Min Zhu; Yuehong Zheng; Dalin Chen; Peiqing La

doi:10.1039/D2NJ04818C

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In situ integration of a cocatalyst and heterojunction to a WO₃ photoanode with enhanced photoelectrochemical performance via phosphatization†

Faqi Zhan,

*^ab Haiyan Zhao,^b Guochang Wen,^b Zhiqing Ma,^a Yisi Liu,^c Min Zhu,^b Yuehong Zheng,^b Dalin Chen*^a and Peiqing La^b

Author affiliations

* Corresponding authors

^a State Key Laboratory of Nickel and Cobalt Resources Comprehensive Utilization, Jinchang, China
E-mail: zhanfaqi@lut.edu.cn

^b State Key Laboratory of Advanced Processing and Recycling of Non-Ferrous Metals, Lanzhou University of Technology, Lanzhou 730050, China

^c Institute of Advanced Materials, Hubei Normal University, Huangshi, China

Abstract

A novel ternary NiP_x/NiWO₄/WO₃ photoanode with the cooperation effect of a heterojunction and cocatalyst was successfully fabricated by an in situ phosphatization process. The NiWO₄ layer forms a heterojunction with WO₃ to improve the separation and transfer of electron–hole pairs. NiP_x acts as a cocatalyst for accelerating the surface water oxidation reaction. A 2.55-fold improvement in photocurrent density at 1.23 V vs. RHE was achieved compared with the pristine WO₃ film.

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Article information

DOI: https://doi.org/10.1039/D2NJ04818C
Article type: Communication
Submitted: 30 Sep 2022
Accepted: 26 Dec 2022
First published: 04 Jan 2023

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New J. Chem., 2023,47, 1620-1624

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In situ integration of a cocatalyst and heterojunction to a WO₃ photoanode with enhanced photoelectrochemical performance via phosphatization

F. Zhan, H. Zhao, G. Wen, Z. Ma, Y. Liu, M. Zhu, Y. Zheng, D. Chen and P. La, New J. Chem., 2023, 47, 1620 DOI: 10.1039/D2NJ04818C

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