Efficient photocatalytic hydrogen production over ZnIn2S4 by producing sulfur vacancies and coupling with nickel-based polyoxometalate

Kejia You; Bonan Li; Xiaohu Li; Rui Li; Junhao Wu; Baochun Ma; Yong Ding

doi:10.1039/D3CC03329E

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Efficient photocatalytic hydrogen production over ZnIn₂S₄ by producing sulfur vacancies and coupling with nickel-based polyoxometalate†

Kejia You,‡^a Bonan Li,‡^a Xiaohu Li,^a Rui Li,^a Junhao Wu,

^a Baochun Ma*^a and Yong Ding

*^ab

Author affiliations

* Corresponding authors

^a State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Advanced Catalysis of Gansu Province, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
E-mail: mabaochun@lzu.edu.cn, dingyong1@lzu.edu.cn

^b State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, China

Abstract

A composite catalytic system using sulfur-vacancy-containing ZnIn₂S₄-Sv as a light-harvesting material and nickel-based polyoxometalate Na₆K₄[Ni₄(H₂O)₂(PW₉O₃₄)₂] (Ni4POM) as a co-catalyst was developed. The Ni4POM/ZnIn₂S₄-Sv composite gave a good hydrogen production rate of 337.5 μmol h⁻¹, a value 11.8 times higher than that of ZnIn₂S₄-Sv. The direction of electron transfer, from ZnIn₂S₄-Sv to Ni4POM, was verified using surface photovoltage spectra.

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Article information

DOI: https://doi.org/10.1039/D3CC03329E
Article type: Communication
Submitted: 11 Jul 2023
Accepted: 09 Aug 2023
First published: 09 Aug 2023

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Chem. Commun., 2023,59, 10972-10975

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Efficient photocatalytic hydrogen production over ZnIn₂S₄ by producing sulfur vacancies and coupling with nickel-based polyoxometalate

K. You, B. Li, X. Li, R. Li, J. Wu, B. Ma and Y. Ding, Chem. Commun., 2023, 59, 10972 DOI: 10.1039/D3CC03329E

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Chemical Communications