Spin engineering of single-site metal catalysts.

ABSTRACT: Single-site metal atoms (SMAs) on supports are attracting extensive interest as new catalytic systems because of maximized atom utilization and superior performance. However, rational design of configuration-optimized SMAs with high activity from the perspectives of fundamental electron spin is highly challenging. Herein, N-coordinated Fe single atoms are successfully distributed over axial carbon micropores to form dangling-FeN₄ centers (d-FeN₄). This unique d-FeN₄ demonstrates much higher intrinsic activity toward oxygen reduction reaction (ORR) in HClO₄ than FeN₄ without micropore underneath and commercial Pt/C. Both theoretical calculation and electronic structure characterization imply that d-FeN₄ endows central Fe with

SUBMITTER: Li Z 

PROVIDER: S-EPMC9249949 | biostudies-literature | 2022 Jul

REPOSITORIES: biostudies-literature