Single-atom nanozymes.

ABSTRACT: Conventional nanozyme technologies face formidable challenges of intricate size-, composition-, and facet-dependent catalysis and inherently low active site density. We discovered a new class of single-atom nanozymes with atomically dispersed enzyme-like active sites in nanomaterials, which significantly enhanced catalytic performance, and uncovered the underlying mechanism. With oxidase catalysis as a model reaction, experimental studies and theoretical calculations revealed that single-atom nanozymes with carbon nanoframe-confined FeN₅ active centers (FeN₅ SA/CNF) catalytically behaved like the axial ligand-coordinated heme of cytochrome P450. The definite active moieties and crucial synergistic effects endow FeN₅ SA/CNF with a clear electron push-effect

SUBMITTER: Huang L 

PROVIDER: S-EPMC6499548 | biostudies-literature | 2019 May

REPOSITORIES: biostudies-literature