Tuning the Electronic and Steric Interaction at the Atomic Interface for Enhanced Oxygen Evolution

Impact Factor:

15.419

DOI number:

10.1021/jacs.2c00533

Journal:

J. Am. Chem. Soc.

Abstract:

The two-dimensional surface or one-dimensional interface of heterogeneous catalysts is essential to determine the adsorption strengths and configurations of the reaction intermediates for desired activities. Recently, the development of single-atom catalysts has enabled an atomic-level understanding of catalytic processes. However, it remains obscure whether the conventional concept and mechanism of one-dimensional interface are applicable to zero-dimensional single atoms. In this work, we arranged the locations of single atoms to explore their interfacial interactions for improved oxygen evolution. When iridium single atoms were confined into the lattice of CoOOH, efficient electron transfer between Ir and Co tuned the adsorption strength of oxygenated intermediates. In contrast, atomic iridium species anchored on the surface of CoOOH induced inappreciable modification in electronic structures, whereas steric interactions with key intermediates at its Ir-OH-Co interface played a primary role in reducing its energy barrier toward oxygen evolution.

Co-author:

Yuan Kong, Jie Wei, Ruyang Wang, Peiyu Ma, Hongliang Li, Zhigang Geng, Ming Zuo, Jun Bao

First Author:

Chen Feng, Zhirong Zhang, Dongdi Wang

Correspondence Author:

Shiming Zhou*,Jie Zeng*

Document Type:

SCI

Volume:

144

Issue:

21

Page Number:

9271–9279

Translation or Not:

no

Date of Publication:

2022-05-12

Links to published journals:

https://pubs.acs.org/doi/full/10.1021/jacs.2c00533