Sulfur Line Vacancies in MoS2 for Catalytic Hydrogen Evolution Reaction

Defects in transition metal dichalcogenides play important roles in the field of the catalytic hydrogen evolution reaction (HER). However, the use of defective MoS2 as HER catalysts remains controversial because the types of defects are various, including zero-dimensional point defects, one-dimensio...

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Bibliographic Details
Published in:Crystals (Basel) 2022-09, Vol.12 (9), p.1218
Main Authors: Tang, Meng, Yin, Weinan, Liu, Shijie, Yu, Haoxuan, He, Yuhao, Cai, Yuntao, Wang, Longlu
Format: Article
Language:English
Subjects:
Annealing
Atomic structure
Catalysts
Crystal structure
Design defects
Dislocations
Electrocatalysts
Energy
Grain boundaries
Hydrogen
hydrogen evolution reaction
Hydrogen evolution reactions
Molybdenum
Molybdenum disulfide
MoS2
Point defects
Precious metals
Sulfur
sulfur line vacancies in MoS2
Transition metal compounds
Transmission electron microscopy
Vacancies
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Summary:Defects in transition metal dichalcogenides play important roles in the field of the catalytic hydrogen evolution reaction (HER). However, the use of defective MoS2 as HER catalysts remains controversial because the types of defects are various, including zero-dimensional point defects, one-dimensional linear defects, and two-dimensional plane defects. Recently, novel structures of linear defects have drawn more and more attention, and it is necessary to explore their unique properties. This review focuses on the formation mechanism, fabrication method, accurate atomic structure, and catalytic hydrogen evolution mechanism of sulfur line vacancies in MoS2 as electrocatalysts. The structure–activity relationship between line defects and catalytic performance is discussed in detail. This will provide a route for the design of excellent catalysts by engineering line defects.
ISSN:2073-4352
2073-4352
DOI:10.3390/cryst12091218