Axial optimization of biomimetic nanoenzyme catalysts applied to oxygen reduction reactions

Jingjing Liu; Jingjing Jia; Huiying Wen; Siqi Li; Yingjie Wu; Qi Wang; Ziwang Kan; Yan Li; Xia Wu; Jingxiang Zhao; Song Liu; Bin Li

doi:10.1039/d2cc06197j

Axial optimization of biomimetic nanoenzyme catalysts applied to oxygen reduction reactions

Chem Commun (Camb). 2023 Mar 21;59(24):3550-3553. doi: 10.1039/d2cc06197j.

Authors

Jingjing Liu¹, Jingjing Jia², Huiying Wen¹, Siqi Li¹, Yingjie Wu¹, Qi Wang¹, Ziwang Kan¹, Yan Li¹, Xia Wu¹, Jingxiang Zhao², Song Liu¹, Bin Li¹

Affiliations

¹ College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin, 150040, China. carlosliusong@nefu.edu.cn.
² College of Chemistry and Chemical Engineering, and Key Laboratory of Photonic and Electronic Bandgap Materials, Ministry of Education, Harbin Normal University, Harbin, 150025, China. zhaojingxiang@hrbnu.edu.cn.

PMID: 36861748
DOI: 10.1039/d2cc06197j

Abstract

Inspired by the bio-oxygen oxidation/reduction processes of hemoglobin, iron-based transition metal-like enzyme catalysts have been explored as oxygen reduction reaction (ORR) electrocatalysts. We synthesized a chlorine-coordinated monatomic iron material (FeN₄Cl-SAzyme) via a high temperature pyrolysis method as a catalyst for the ORR. The half-wave potential (E_1/2) was 0.885 V, which exceeded those of Pt/C and the other FeN₄X-SAzyme (X = F, Br, I) catalysts. Furthermore, through density functional theory (DFT) calculations, we systematically explored the better performance reason of FeN₄Cl-SAzyme. This work offers a promising approach toward high-performance single atom electrocatalysts.