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The transition metal dichagenides and their metallic 1T structure are attracting contemporary attentions for applications in high-performance devices because their peculiar optical and electrical properties. The single and few layers 1T structure is generally obtained by mechanical or chemical exfoliation. This work presents facile one-step synthesis of 2H-1T MoS 2 :Cu/reduced graphene oxide nanosheets. The experiment results indicated that the MoS 2  and MoS 2 :Cu prepared by simple chemical solution reaction possessed 2H-1T structures. The reduced graphene oxide (rGO) incorporation further induced the phase transition from 2H-MoS 2  to 1T-MoS 2  and morphology transition from granular/nanosheet to more nanosheet. The 2H-1T structure and 2H → 1T phase transition, together with the Cu doping and interface effect between the MoS 2  and rGO, remarkably enhanced the conduction and photoconduction of the nanostructures. Thus, Cu doping and rGO incorporation obviously enhanced the catalytic activity and its stability, making the MoS 2 :Cu/rGO nanosheet a most active and stable catalyst for hydrogen evolution. This work clearly indicates that the 1T-MoS 2  nanosheets with high catalytic activity for hydrogen evolution can be easily obtained by the facile low temperature chemical method and induction of rGO.

RETRACTED ARTICLE: One-step assembly of 2H-1T MoS2:Cu/reduced graphene oxide nanosheets for highly efficient hydrogen evolution