SCI和EI收录∣中国化工学会会刊

中国化学工程学报 ›› 2019, Vol. 27 ›› Issue (3): 544-548.DOI: 10.1016/j.cjche.2018.04.023

• Catalysis, Kinetics and Reaction Engineering • 上一篇    下一篇

A high H2 evolution rate under visible light of a CdS/TiO2@NiS catalyst due to a directional electron transfer between the phases

Jianling Meng1, Yongdan Li2   

  1. 1 School of Material and Chemical Engineering, Tongren University, Tongren 554300, China;
    2 Tianjin Key Laboratory of Applied Catalysis Science and Technology, State Key Laboratory for Chemical Engineering, School of Chemical Engineering, Tianjin University, Tianjin 300072, China
  • 收稿日期:2018-02-28 修回日期:2018-04-09 出版日期:2019-03-28 发布日期:2019-04-25
  • 通讯作者: Jianling Meng,E-mail addresses:mengjian_ling@126.com;Yongdan Li,ydli@tju.edu.cn
  • 基金资助:

    Supported by the Scientific Research Starting Foundation for Doctors (trxyDH1512),and the Foundation for Youth Talent Growth Project in the Ministry of Science and Technology of China (20171184),and the Mutual Foundation in the Ministry of Science and Technology of China (20177315).

A high H2 evolution rate under visible light of a CdS/TiO2@NiS catalyst due to a directional electron transfer between the phases

Jianling Meng1, Yongdan Li2   

  1. 1 School of Material and Chemical Engineering, Tongren University, Tongren 554300, China;
    2 Tianjin Key Laboratory of Applied Catalysis Science and Technology, State Key Laboratory for Chemical Engineering, School of Chemical Engineering, Tianjin University, Tianjin 300072, China
  • Received:2018-02-28 Revised:2018-04-09 Online:2019-03-28 Published:2019-04-25
  • Contact: Jianling Meng,E-mail addresses:mengjian_ling@126.com;Yongdan Li,ydli@tju.edu.cn
  • Supported by:

    Supported by the Scientific Research Starting Foundation for Doctors (trxyDH1512),and the Foundation for Youth Talent Growth Project in the Ministry of Science and Technology of China (20171184),and the Mutual Foundation in the Ministry of Science and Technology of China (20177315).

摘要: The photocatalytic activity of CdS can be greatly improved by co-modification of NiS and TiO2 materials; furthermore the order of connection affects much. A directional electron transfer route via CdS → TiO2 → NiS is found crucial to the enhancement of ternary catalyst, where TiO2 acts as an electron reservoir and NiS works as an effective cocatalyst. CdS/TiO2@NiS with NiS loaded on TiO2 has an activity of H2 evolution 2.5 times higher than NiS@CdS/TiO2 with NiS pre-loaded on CdS. Faster e-/h+ separation rates is obtained of CdS/TiO2@NiS under visible light than under extra UV light irradiation, which in turn demonstrates the importance of directional electron transfer route.

关键词: Directional electron transfer, Photocatalysis, Hydrogen, Visible light

Abstract: The photocatalytic activity of CdS can be greatly improved by co-modification of NiS and TiO2 materials; furthermore the order of connection affects much. A directional electron transfer route via CdS → TiO2 → NiS is found crucial to the enhancement of ternary catalyst, where TiO2 acts as an electron reservoir and NiS works as an effective cocatalyst. CdS/TiO2@NiS with NiS loaded on TiO2 has an activity of H2 evolution 2.5 times higher than NiS@CdS/TiO2 with NiS pre-loaded on CdS. Faster e-/h+ separation rates is obtained of CdS/TiO2@NiS under visible light than under extra UV light irradiation, which in turn demonstrates the importance of directional electron transfer route.

Key words: Directional electron transfer, Photocatalysis, Hydrogen, Visible light