SCI和EI收录∣中国化工学会会刊

Chinese Journal of Chemical Engineering ›› 2022, Vol. 43 ›› Issue (3): 266-274.DOI: 10.1016/j.cjche.2021.03.055

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CdS nanoparticles decorated hexagonal Fe2O3 nanosheets with a Z-scheme photogenerated electron transfer path for improved visible-light photocatalytic hydrogen production

Feng Guo1, Haoran Sun1, Yuxing Shi1, Fengyu Zhou1, Weilong Shi2   

  1. 1. School of Energy and Power, Jiangsu University of Science and Technology, Zhenjiang 212003, China;
    2. School of Material Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, China
  • Received:2021-01-24 Revised:2021-03-10 Online:2022-04-28 Published:2022-03-28
  • Contact: Feng Guo,E-mail:gfeng0105@126.com;Weilong Shi,E-mail:shiwl@just.edu.cn
  • Supported by:
    The authors would like to acknowledge the founding support from the National Natural Science Foundation of China (21906072 and 22006057), the Natural Science Foundation of Jiangsu Province (BK20190982), "Doctor of Mass entrepreneurship and innovation" Project in Jiangsu Province, and Doctoral Scientific Research Foundation of Jiangsu University of Science and Technology (China) (1062931806 and 1142931803).

CdS nanoparticles decorated hexagonal Fe2O3 nanosheets with a Z-scheme photogenerated electron transfer path for improved visible-light photocatalytic hydrogen production

Feng Guo1, Haoran Sun1, Yuxing Shi1, Fengyu Zhou1, Weilong Shi2   

  1. 1. School of Energy and Power, Jiangsu University of Science and Technology, Zhenjiang 212003, China;
    2. School of Material Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, China
  • 通讯作者: Feng Guo,E-mail:gfeng0105@126.com;Weilong Shi,E-mail:shiwl@just.edu.cn
  • 基金资助:
    The authors would like to acknowledge the founding support from the National Natural Science Foundation of China (21906072 and 22006057), the Natural Science Foundation of Jiangsu Province (BK20190982), "Doctor of Mass entrepreneurship and innovation" Project in Jiangsu Province, and Doctoral Scientific Research Foundation of Jiangsu University of Science and Technology (China) (1062931806 and 1142931803).

Abstract: Photocatalytic water splitting for hydrogen production (H2) is one of the main potential applications of photocatalytic technology, which can use solar energy as the energy required for chemical reactions to alleviate the energy crisis. In this work, zero-dimensional/two-dimensional (0D/2D) contact surface CdS/α-Fe2O3 (CF) heterojunction photocatalyst was synthesized via a simple solvothermal method. Photocatalytic hydrogen production experiments revealed that the CF-15 sample shows the optimal photocatalytic H2 rate (1806 (μmol·h-1·g-1)) and apparent quantum efficiency (AQE = 13.7% at λ = 420 nm). The enhancement of photocatalytic performance is mainly attributed to the contact of 0D/2D interface and the synergistic effect of Z-scheme electron transfer mechanism. This work provides an effective way for modified composite semiconductor photocatalyst by constructing special interface heterojunction to achieve highly efficiently catalysis.

Key words: Photocatalysis, Hydrogen production, 0D/2D, CdS, α-Fe2O3, Z-scheme

摘要: Photocatalytic water splitting for hydrogen production (H2) is one of the main potential applications of photocatalytic technology, which can use solar energy as the energy required for chemical reactions to alleviate the energy crisis. In this work, zero-dimensional/two-dimensional (0D/2D) contact surface CdS/α-Fe2O3 (CF) heterojunction photocatalyst was synthesized via a simple solvothermal method. Photocatalytic hydrogen production experiments revealed that the CF-15 sample shows the optimal photocatalytic H2 rate (1806 (μmol·h-1·g-1)) and apparent quantum efficiency (AQE = 13.7% at λ = 420 nm). The enhancement of photocatalytic performance is mainly attributed to the contact of 0D/2D interface and the synergistic effect of Z-scheme electron transfer mechanism. This work provides an effective way for modified composite semiconductor photocatalyst by constructing special interface heterojunction to achieve highly efficiently catalysis.

关键词: Photocatalysis, Hydrogen production, 0D/2D, CdS, α-Fe2O3, Z-scheme