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- Title
Construction of Mo/Mo<sub>2</sub>C@C modified ZnIn<sub>2</sub>S<sub>4</sub> Schottky junctions for efficient photo-thermal assisted hydrogen evolution.
- Authors
Xiu-Qing Qiao; Wenxuan Chen; Chen Li; Zizhao Wang; Dongfang Hou; Bojing Sun; Dong-Sheng Li
- Abstract
Photocatalytic water splitting on noble metal-free photocatalysts for H2 generation is a promising but challenging approach to realize solar-to-chemical energy conversion. In this study, Mo/Mo2C nanoparticles anchored carbon layer (Mo/Mo2C@C) was obtained by a one-step in-situ phase transition approach and developed for the first time as a photothermal cocatalyst to enhance the activity of ZnIn2S4 photocatalyst. Mo/Mo2C@C nanosheet exhibits strong absorption in the full spectrum region and excellent photo-thermal conversion ability, which generates heat to improve the reaction temperature and accelerate the reaction kinetics. Moreover, metallic Mo/Mo2C@C couples with ZnIn2S4 to form ZnIn2S4–Mo/Mo2C@C Schottky junction (denoted as ZMM), which prevents the electrons back transfer and restrains the charge recombination. In addition, conductive carbon with strong interfacial interaction serves as a fast charge transport bridge. Consequently, the optimized ZMM-0.2 junction exhibits an H2 evolution rate of 1031.07 μmol g−1 h−1, which is 41 and 4.3 times higher than bare ZnIn2S4 and ZnIn2S4–Mo2C, respectively. By designing novel photothermal cocatalysts, our work will provide a new guidance for designing efficient photocatalysts.
- Subjects
PHOTOCATALYSIS; ENERGY conversion; FORCE &; energy; SCHOTTKY barrier; SEMICONDUCTOR-metal boundaries
- Publication
Materials Reports: Energy, 2023, Vol 3, Issue 4, p1
- ISSN
2666-9358
- Publication type
Article
- DOI
10.1016/j.matre.2023.100234