Modulating paired Ir-O-Ir via electronic perturbations of correlated Ir single atoms to overcome catalytic selectivity.

ABSTRACT: Single-atom catalysts have been extensively utilized for electrocatalysis, in which electronic metal-support interactions are typically employed to stabilize single atoms. However, this neglects the metal-metal interactions of adjacent atoms, which are essential for the fine-tuning of selective sites. Herein, the high-loading of Ir single atoms (Ir SAs) (8.9 wt%) were adjacently accommodated into oxygen vacancy-rich Co₃O₄ nanosheets (Ir SAs/Co₃O₄). Electronic perturbations for both Ir single atoms and Co₃O₄ supports were observed under electronic metal-support and metal-metal interactions, thus generating Ir-O-Co/Ir units. Electrons were transferred from Co and Ir to O atoms, inducing the depletion of 3d/5d states in Co/Ir a

SUBMITTER: Chen SH 

PROVIDER: S-EPMC10510769 | biostudies-literature | 2023 Sep

REPOSITORIES: biostudies-literature