Tailoring coordination environments of single-atom electrocatalysts for hydrogen evolution by topological heteroatom transfer.

ABSTRACT: The rational design of carbon-supported transition-metal single-atom catalysts requires the precise arrangement of heteroatoms within the single-atom catalysts. However, achieving this design is challenging due to the collapse of the structure during the pyrolysis. Here, we introduce a topological heteroatom-transfer strategy to prevent the collapse and accurately control the P coordination in carbon-supported single-atom catalysts. As an illustration, we have prepared self-assembled helical fibers with encapsulated cavities. Within these cavities, adjustable functional groups can chelate metal ions (N_x···Mⁿ⁺···O_y), facilitating the preservation of the structure during the pyrolysis based phosphidation. This process allows for the transfer of heteroatoms fr

SUBMITTER: Qian S 

PROVIDER: S-EPMC10981667 | biostudies-literature | 2024 Mar

REPOSITORIES: biostudies-literature