Chinese Journal of Catalysis ›› 2023, Vol. 49: 42-67.DOI: 10.1016/S1872-2067(23)64444-4

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Metal-sulfide-based heterojunction photocatalysts: Principles, impact, applications, and in-situ characterization

Haibo Zhanga,b, Zhongliao Wangb,*(), Jinfeng Zhangb,*(), Kai Daia,b,*()   

  1. aKey Laboratory of Green and Precise Synthetic Chemistry and Applications, Ministry of Education, Huaibei Normal University, Huaibei 235000, Anhui, China
    bAnhui Province Key Laboratory of Pollutant Sensitive Materials and Environmental Remediation, School of Physics and Electronic Information, Huaibei Normal University, Huaibei 235000, Anhui, China
  • Received:2023-03-12 Accepted:2023-04-18 Online:2023-06-18 Published:2023-06-05
  • Contact: *E-mail: daikai940@chnu.edu.cn (K. Dai), wangzl@chnu.edu.cn (Z. Wang), jfzhang@chnu.edu.cn (J. Zhang).
  • About author:Zhongliao Wang received his B.A. degree from Huaibei Normal University (China) in 2015, Master degree under the supervision of Prof. Kai Dai from Huaibei Normal University in 2018, and Ph.D. degree under the supervision of Prof. Jiaguo Yu from State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology (China) in 2021. His research interests mainly focus on the controllable synthesis of photocatalysts, CO2 photoreduction, overall utilization of photogenerated charge, photocatalytic mechanism research, and DFT calculation.
    Jinfeng Zhang (Huaibei Normal University) received his M.S. degree from Ningxia University (China) in 2007, and Ph.D. degree from Wuhan University of Technology (China) in 2016. He carried out postdoctoral research in Wuhan University of Technology from 2016 to 2018. Since the end of 2007, he has been working in Huaibei Normal University. His research interests mainly focus on semiconductor photocatalysis. As the first author or corresponding author, he has published more than 50 SCI papers, including 3 hot paper of ESI and 12 highly cited papers of ESI. He has mainly undertaken more than 6 research projects, including the National Natural Science Foundation of China, China Postdoctoral Science Foundation and Anhui Provincial Department of Education.
    Kai Dai (Huaibei Normal University) received his B.A. degree from Anhui University (China) in 2002, and Ph.D. degree from Shanghai University (China) in 2007. He worked in Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences at 2007, and then in Huaibei Normal University at 2010. He is a recipient of National Science Foundation for Distinguished Young Scholars of Anhui Province (2018) and the head of Anhui provincial excellent research and innovation team in universities (2022) and Anhui provincial teaching team (2019). He has also been invited by Xi’an Jiaotong Liverpool University to be a visiting professor and PhD co-supervisor since 2022. His research interests mainly focus on semiconductor nanomaterials for solar energy conversion. He has published more than 140 peer-reviewed papers, including 9 hot paper of ESI and 22 highly cited papers of ESI. He was invited as a member of the 5th and 6th editorial board of Acta Phys.-Chim. Sin.
  • Supported by:
    National Natural Science Foundation of China(22278169);National Natural Science Foundation of China(51973078);Excellent Scientific Research and Innovation Team of Education Department of Anhui Province(2022AH010028);Major Projects of Education Department of Anhui Province(2022AH040068);Key Foundation of Educational Commission of Anhui Province(2022AH050396)

Abstract:

Semiconductor photocatalysis is a new sustainable development technology that has demonstrated remarkable potential in the fields of energy-production and environmental-protection. However, a single photocatalyst usually does not possess both strong redox and fast charge-separation properties, greatly limiting photocatalysis efficiency. Heterojunction photocatalysts can perfectly solve this problem by providing multiple reactive sites and fast charge separation and migration, elevating photocatalytic efficiency to a new higher level. Metal sulfides are a family of compounds composed of metals and sulfur (e.g., CdS, CuS, MoS2, In2S3, ZnIn2S4, and ZnxCd1-xS) that are preferred choices for heterojunction photocatalysts due to their narrow bandgaps, broad visible-light absorption ranges, and convenient preparation methods. This review article introduces the characteristics of metal sulfides, summarizes methods for their synthesis, and discusses various types of metal-sulfide-based heterojunctions. The use of such photocatalysts in energy and environmental-remediation applications is subsequently discussed. In addition, the roles of charge separation and transfer in heterojunction photocatalysts are demonstrated using in-situ characterization techniques. Finally, we discuss some application prospects and challenges concerning metal-sulfide-based heterojunction photocatalysts.

Key words: Photocatalysis, Metal sulfide, Heterojunction, Charge separation, Application