articleNature CommunicationsNov 19, 2019GOLD OA

Single-atom cobalt array bound to distorted 1T MoS2 with ensemble effect for hydrogen evolution catalysis

KQKun QiXCXiaoqiang CuiLGLin GuSYShansheng YuXFXiaofeng Fan

Jilin University · State Key Laboratory of Automotive Simulation and Control · +6 more institutions

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Abstract

Abstract The grand challenge in the development of atomically dispersed metallic catalysts is their low metal-atom loading density, uncontrollable localization and ambiguous interactions with supports, posing difficulty in maximizing their catalytic performance. Here, we achieve an interface catalyst consisting of atomic cobalt array covalently bound to distorted 1T MoS 2 nanosheets (SA Co-D 1T MoS 2 ). The phase of MoS 2 transforming from 2H to D-1T, induced by strain from lattice mismatch and formation of Co-S covalent bond between Co and MoS 2 during the assembly, is found to be essential to form the highly active single-atom array catalyst. SA Co-D 1T MoS 2 achieves Pt-like activity toward HER and high…

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535
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Topics & keywords

Topics
Keywords
  • Catalysis
  • Density functional theory
  • Covalent bond
  • Cobalt
  • Materials science
  • Chemical physics
  • Metal
  • Atom (system on chip)
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