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

doi:10.1016/j.cjche.2018.04.023

Chinese Journal of Chemical Engineering ›› 2019, Vol. 27 ›› Issue (3): 544-548.DOI: 10.1016/j.cjche.2018.04.023

• Catalysis, Kinetics and Reaction Engineering • Previous Articles Next Articles

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 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:2019-04-25 Published:2019-03-28
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).

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 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

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).

Abstract

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

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

Jianling Meng, Yongdan Li. A high H₂ evolution rate under visible light of a CdS/TiO₂@NiS catalyst due to a directional electron transfer between the phases[J]. Chinese Journal of Chemical Engineering, 2019, 27(3): 544-548.

Jianling Meng, Yongdan Li. A high H₂ evolution rate under visible light of a CdS/TiO₂@NiS catalyst due to a directional electron transfer between the phases[J]. 中国化学工程学报, 2019, 27(3): 544-548.

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

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

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