Interface engineering of Co9S8/CdIn2S4 ohmic junction for efficient photocatalytic H2 evolution under visible light

Chunxue Li; Yidong Zhao; Xiaoteng Liu; Pengwei Huo; Yongsheng Yan; Lili Wang; Guangfu Liao; Chunbo Liu

doi:10.1016/j.jcis.2021.05.084

Interface engineering of Co₉S₈/CdIn₂S₄ ohmic junction for efficient photocatalytic H₂ evolution under visible light

Chunxue Li, Yidong Zhao, Xiaoteng Liu, Pengwei Huo, Yongsheng Yan^*, Lili Wang^*, Guangfu Liao^*, Chunbo Liu

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

85 Citations (Scopus)

Abstract

The design and development of high-performance photocatalysts from three aspects of simultaneous enhancement of light harvest, carrier migration rate, and redox reaction rate is still a great challenge. Herein, a novel Co₉S₈/CdIn₂S₄ ohmic junction with a robust internal electric field (IEF) is successfully prepared via hydrothermal and in situ synthesis methods and is used for effective photocatalytic H₂ evolution (PHE). Under simulated visible light irradiation, the PHE rate of 5% Co₉S₈/CdIn₂S₄ can reach 1083.6 μmol h⁻¹ g⁻¹, which is 6.4 times higher than that of CdIn₂S₄ (170.5 μmol h⁻¹ g⁻¹). The enhanced PHE performance is mainly ascribed to the improved light harvest and carrier separation efficiency and fast surface H₂ evolution kinetics. Moreover, Co₉S₈ nanotubes serve as promising Co-based cocatalysts that can evidently enhance PHE activity. Additionally, Co₉S₈/CdIn₂S₄ shows superior stability because the photogenerated carrier transfer path restrains the photocorrosion behavior. The photocatalytic mechanism is proposed based on experimental results and DFT calculations. This work offers new insights for the design and development of highly active photocatalysts from interface engineering.

Original language	English
Pages (from-to)	794-803
Number of pages	10
Journal	Journal of Colloid and Interface Science
Volume	600
Early online date	19 May 2021
DOIs	https://doi.org/10.1016/j.jcis.2021.05.084
Publication status	Published - 15 Oct 2021

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Keywords

Co9S8/CdIn2S4
Internal electric field
Ohmic junction
Photocatalytic H2 evolution

Access to Document

10.1016/j.jcis.2021.05.084

Cite this

@article{9c71cc7f57ac4057a1a81759f8b97104,

title = "Interface engineering of Co9S8/CdIn2S4 ohmic junction for efficient photocatalytic H2 evolution under visible light",

abstract = "The design and development of high-performance photocatalysts from three aspects of simultaneous enhancement of light harvest, carrier migration rate, and redox reaction rate is still a great challenge. Herein, a novel Co9S8/CdIn2S4 ohmic junction with a robust internal electric field (IEF) is successfully prepared via hydrothermal and in situ synthesis methods and is used for effective photocatalytic H2 evolution (PHE). Under simulated visible light irradiation, the PHE rate of 5\% Co9S8/CdIn2S4 can reach 1083.6 μmol h−1 g−1, which is 6.4 times higher than that of CdIn2S4 (170.5 μmol h−1 g−1). The enhanced PHE performance is mainly ascribed to the improved light harvest and carrier separation efficiency and fast surface H2 evolution kinetics. Moreover, Co9S8 nanotubes serve as promising Co-based cocatalysts that can evidently enhance PHE activity. Additionally, Co9S8/CdIn2S4 shows superior stability because the photogenerated carrier transfer path restrains the photocorrosion behavior. The photocatalytic mechanism is proposed based on experimental results and DFT calculations. This work offers new insights for the design and development of highly active photocatalysts from interface engineering.",

keywords = "Co9S8/CdIn2S4, Internal electric field, Ohmic junction, Photocatalytic H2 evolution",

author = "Chunxue Li and Yidong Zhao and Xiaoteng Liu and Pengwei Huo and Yongsheng Yan and Lili Wang and Guangfu Liao and Chunbo Liu",

note = "We gratefully acknowledge the financial support of the National Natural Science Foundation of China (21805115, 21576112, and 21606114) and the Open Project Program of Key Laboratory of Preparation and Application of Environmental Friendly Materials (Jilin Normal University), Ministry of Education, China (2019009). ",

year = "2021",

month = oct,

day = "15",

doi = "10.1016/j.jcis.2021.05.084",

language = "English",

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pages = "794--803",

journal = "Journal of Colloid and Interface Science",

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TY - JOUR

T1 - Interface engineering of Co9S8/CdIn2S4 ohmic junction for efficient photocatalytic H2 evolution under visible light

AU - Li, Chunxue

AU - Zhao, Yidong

AU - Liu, Xiaoteng

AU - Huo, Pengwei

AU - Yan, Yongsheng

AU - Wang, Lili

AU - Liao, Guangfu

AU - Liu, Chunbo

N1 - We gratefully acknowledge the financial support of the National Natural Science Foundation of China (21805115, 21576112, and 21606114) and the Open Project Program of Key Laboratory of Preparation and Application of Environmental Friendly Materials (Jilin Normal University), Ministry of Education, China (2019009).

PY - 2021/10/15

Y1 - 2021/10/15

N2 - The design and development of high-performance photocatalysts from three aspects of simultaneous enhancement of light harvest, carrier migration rate, and redox reaction rate is still a great challenge. Herein, a novel Co9S8/CdIn2S4 ohmic junction with a robust internal electric field (IEF) is successfully prepared via hydrothermal and in situ synthesis methods and is used for effective photocatalytic H2 evolution (PHE). Under simulated visible light irradiation, the PHE rate of 5% Co9S8/CdIn2S4 can reach 1083.6 μmol h−1 g−1, which is 6.4 times higher than that of CdIn2S4 (170.5 μmol h−1 g−1). The enhanced PHE performance is mainly ascribed to the improved light harvest and carrier separation efficiency and fast surface H2 evolution kinetics. Moreover, Co9S8 nanotubes serve as promising Co-based cocatalysts that can evidently enhance PHE activity. Additionally, Co9S8/CdIn2S4 shows superior stability because the photogenerated carrier transfer path restrains the photocorrosion behavior. The photocatalytic mechanism is proposed based on experimental results and DFT calculations. This work offers new insights for the design and development of highly active photocatalysts from interface engineering.

AB - The design and development of high-performance photocatalysts from three aspects of simultaneous enhancement of light harvest, carrier migration rate, and redox reaction rate is still a great challenge. Herein, a novel Co9S8/CdIn2S4 ohmic junction with a robust internal electric field (IEF) is successfully prepared via hydrothermal and in situ synthesis methods and is used for effective photocatalytic H2 evolution (PHE). Under simulated visible light irradiation, the PHE rate of 5% Co9S8/CdIn2S4 can reach 1083.6 μmol h−1 g−1, which is 6.4 times higher than that of CdIn2S4 (170.5 μmol h−1 g−1). The enhanced PHE performance is mainly ascribed to the improved light harvest and carrier separation efficiency and fast surface H2 evolution kinetics. Moreover, Co9S8 nanotubes serve as promising Co-based cocatalysts that can evidently enhance PHE activity. Additionally, Co9S8/CdIn2S4 shows superior stability because the photogenerated carrier transfer path restrains the photocorrosion behavior. The photocatalytic mechanism is proposed based on experimental results and DFT calculations. This work offers new insights for the design and development of highly active photocatalysts from interface engineering.

KW - Co9S8/CdIn2S4

KW - Internal electric field

KW - Ohmic junction

KW - Photocatalytic H2 evolution

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