期刊
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
卷 45, 期 7, 页码 4113-4121出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2019.12.077
关键词
Z-scheme; ZnIn2S4/LaNiO3; Photocatalysis; H-2 evolution; Heterojunction
资金
- National Science Foundation of China [21643009, 21902026, U1805255]
- Natural Science Foundation of Fujian Province [2019J01890, 2019J05127]
- State Key Laboratory of Photo catalysis on Energy and Environment [SKLPEEKF201715]
- State Key Laboratory of Photocatalysis on Energy and Environment [SKLPEE-2017B02]
The direct Z-scheme ZnIn2S4/LaNiO3 nanohybrid based on ZnIn2S4 nanosheets and LaNiO3 cubes was synthesized by a facile hydrothermal method. The ZnIn2S4/LaNiO3 nanohybrid showed improved photocatalytic H-2 evolution and stability. The photocatalytic H-2 evolution activity of ZnIn2S4/LaNiO3 nanohybrid is 3-fold enhanced than that of bare ZnIn2S4. The enhanced performance of ZnIn2S4/LaNiO3 nanohybrid is mainly ascribed to the formation of heterojunction between LaNiO3 and ZnIn2S4. The heterojunction can facilitate charge transport on the interface between LaNiO3 and ZnIn2S4 and suppress the recombination of photo-generated charge carriers over ZnIn2S4/LaNiO3 nanohybrid, which were well demonstrated by photoelectrochemical tests. Moreover, the direct Z-scheme photo catalytic reaction mechanism was proposed to elucidate the improved performance of ZnIn2S4/LaNiO3 nanohybrid photocatalyst. This study may provide some guidance on the construction of direct Z-scheme photocatalytic system for photocatalytic H-2 evolution. (C) 2019 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
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