University of Oulu

Liu, S., Li, F., Li, T., & Cao, W. (2023). High-performance ZnIn2S4/Ni(Dmgh)2 for photocatalytic hydrogen evolution: Ion exchange construction, photocorrosion mitigation, and efficiency enhancement by photochromic effect. Journal of Colloid and Interface Science, 642, 100–111.

High-performance ZnIn₂S₄/Ni(dmgH)₂ for photocatalytic hydrogen evolution: ion exchange construction, photocorrosion mitigation, and efficiency enhancement by photochromic effect

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Author: Liu, Shangshu1; Li, Feng1,2; Li, Taohai1,2;
Organizations: 1College of Chemistry, Key Lab of Environment Friendly Chemistry and Application in Ministry of Education, Xiangtan University, Xiangtan 411105, China
2Nano and Molecular Materials Research Unit, Faculty of Science, University of Oulu, P.O. Box 3000, FIN-90014, Finland
Format: article
Version: published version
Access: open
Online Access: PDF Full Text (PDF, 3.3 MB)
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Language: English
Published: Elsevier, 2023
Publish Date: 2023-05-12


In this work, a novel photocatalyst of ZnIn₂S₄/Ni(dmgH)₂ was designed by a simple chemical precipitation method and used to enhance hydrogen evolution under visible light irradiation. Along with vigorous discharges of hydrogen bubbles, an optimal rate of 36.3 mmol/g/h was reached under UV–Vis light for hydrogen evolution, nearly 4.9 times of the one from pure ZnIn₂S₄. The heterojunction exhibits steady hydrogen evolution capability and owns a high apparent quantum efficiency (AQE) of 20.45% under the monochromatic light at 420 nm. By coupling ZnIn₂S₄ with Ni(dmgH)₂, an extraordinary photochromic phenomenon was detected and attributed to the active Ni-S component in situ formed between the nickel and sulfur composites under light irradiation. The emerging sulfide benefits light absorption of the system and separation of photogenerated electron and hole pairs. Besides providing a promising photocatalyst for visible light hydrogen production, the present work is hoped to inspire new trends of catalytic medium designs and investigations.

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Series: Journal of colloid and interface science
ISSN: 0021-9797
ISSN-E: 1095-7103
ISSN-L: 0021-9797
Volume: 642
Pages: 100 - 111
DOI: 10.1016/j.jcis.2023.03.123
Type of Publication: A1 Journal article – refereed
Field of Science: 116 Chemical sciences
Funding: National Natural Science Foundation of China (21601149), China Scholarship Council, University of Oulu Finland, the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme (grant agreement No. 101002219).
EU Grant Number: (101002219) CATCH - Cross-dimensional Activation of Two-Dimensional Semiconductors for Photocatalytic Heterojunctions
Copyright information: © 2023 The Authors. Published by Elsevier Inc. This is an open access article distributed under the terms of the Creative Commons CC-BY license, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.