The simplest construction of single-site catalysts by the synergism of micropore trapping and nitrogen anchoring.

ABSTRACT: Single-site catalysts feature high catalytic activity but their facile construction and durable utilization are highly challenging. Herein, we report a simple impregnation-adsorption method to construct platinum single-site catalysts by synergic micropore trapping and nitrogen anchoring on hierarchical nitrogen-doped carbon nanocages. The optimal catalyst exhibits a record-high electrocatalytic hydrogen evolution performance with low overpotential, high mass activity and long stability, much superior to the platinum-based catalysts to date. Theoretical simulations and experiments reveal that the micropores with edge-nitrogen-dopants favor the formation of isolated platinum atoms by the micropore trapping and nitrogen anchoring of [PtCl₆]^2-, followed by the spontaneous

SUBMITTER: Zhang Z 

PROVIDER: S-EPMC6458126 | biostudies-literature | 2019 Apr

REPOSITORIES: biostudies-literature