Catalytically enhanced thin and uniform TaS₂ nanosheets for hydrogen evolution reaction

Abstract

Though the transition-metal dichalcogenides (TMDs) were proven to have a better performance on the hydrogen evolution reaction (HER), the bulk production of active TMD materials remains a challenging work. This report overcomes those barriers by showing a simple procedure to synthesize TaS₂ nanosheets through modifying the arc discharge process. The usage of chloride as the transporting agent reduces the growth period of the formed TaS₂ with active edge sites. TaS₂ is found to have a uniform thickness (4 nm) with high crystallinity and adopt a 2H polytype (double-layered hexagonal) structure. The as-synthesized TaS₂ has superior activity for HER with the potential of 280 mV.

Keywords

hydrogen evolution reaction / TaS₂ nanosheets / arc disharge / active edge sites

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Acknowledgements

This work was supported by the National Natural Science Foundation of China (Grant Nos. 21576289 and 21322609), the Science Foundation Research Funds Provided to New Recruitments of China University of Petroleum, Beijing (2462014QZDX01) and the Thousand Talents Program.

RIGHTS & PERMISSIONS

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