期刊
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
卷 43, 期 34, 页码 16566-16572出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2018.07.068
关键词
Water splitting; Hydrogen production; Photocatalysts; Pt co-catalysis; g-C3N4/KNbO3
资金
- National Natural Science Foundation of China [21522603, 21477050, 21401082, 21503142, 21671083]
- Six Talents Peak Project in Jiangsu Province [XCL-025]
- Chinese German Cooperation Research Project [GZ1091]
- Postgraduate Research & Practice Innovation Program of Jiangsu Province [KYCX17_1774]
- Youth Foundation of Jiangsu Scientific Committee [BK20170526]
In this paper, g-C3N4/KNbO3 heterojunction composites were prepared and used to water splitting for hydrogen production under simulated sunlight. The morphology and structure of the composites were characterized by X-ray powder diffraction, scanning electron microscopy, transmission electron microscopy, energy dispersive X-Ray spectroscopy and high resolution transmission electron microscopy. The g-C3N4/KNbO(3 )composites exhibited the better photocatalytic performance for water splitting more than 2 and 1.8 times of the pure g-C3N4 and KNbO3. Meanwhile, the Pt nanoparticles as a co-catalyst were deposited on the surface of g-C3N4/KNbO3 as Pt-g-C3N4/KNbO3 composites for water splitting which enhanced photocatalytic properties almost 74 and 14 times than that of Pt-KNbO3 and Pt-g-C3N4. Such a significant improvement of the photocatalytic activity was mainly ascribed to the photoinduced electron-holes in the interface of g-C3N4/KNbO3 composites rapid separation and the co-catalysis effect of Pt nanoparticles. These present study work may provide a useful method for water splitting using an effective composites photocatalysts. (C) 2018 Published by Elsevier Ltd on behalf of Hydrogen Energy Publications LLC.
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