期刊
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
卷 45, 期 4, 页码 2840-2851出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2019.11.182
关键词
Photocatalysts; Visible light; g-C3N4@alpha-Fe2O3/Co-Pi; Hydrogen evolution; Stability
资金
- National Natural Science Foundation of China [21606147]
- Key projects of industrial science and technology plan in Qiannan Prefecture [2017(11)]
- Innovation Project of the Shandong Academy of Medical Sciences
- Academy Science and Technology Project of Shandong Academy of Medical Sciences [2017-55]
For the first time, g-C3N4@alpha-Fe2O3/Co-Pi heterojunctional hollow spheres were successfully fabricated via thermal condensation method followed by solvothermal and photo deposition treatment, which showed excellent photocatalytical property. Except for the Z-scheme charge transfer between alpha-Fe2O3 and g-C3N4, the Co-Pi could further reduce the combination of photogenerated electrons and holes as a hole storage agent, resulting in remarkably enhanced visible-light photocatalytic water splitting activity with the H-2 production rate of 450 mu mol h(-1)g(-1), which is 15.7 times higher than that of g-C3N4. Moreover, the photocatalytic activity of the prepared ternary hollow photocatalysts showed almost no significant weakness after five cycles, which indicated their good performance stability. The as-prepared g-C3N4@alpha-Fe2O3/Co-Pi also possessed good activity for overall water splitting with the hydrogen production rate reaching 9.8 mu mol h(-1)g(-1). This synthesized g-C3N4@alpha-Fe2O3/Co-Pi composite is expected to be a promising candidate for water splitting. (C) 2019 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
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