Ultrafine Iridium Nanoparticles Anchored on Co-Based Metal-Organic Framework Nanosheets for Robust Hydrogen Evolution in Alkaline Media

Rongfang Li; Xueyi Chen; Heng Zhang; Yiren Wang; Yang Lv; Haopeng Jiang; Bowen Guo; Xun Feng

doi:10.1021/acs.inorgchem.3c04291

Ultrafine Iridium Nanoparticles Anchored on Co-Based Metal-Organic Framework Nanosheets for Robust Hydrogen Evolution in Alkaline Media

Inorg Chem. 2024 Jan 29;63(4):2282-2288. doi: 10.1021/acs.inorgchem.3c04291. Epub 2024 Jan 17.

Authors

Rongfang Li¹, Xueyi Chen^{1

2}, Heng Zhang^{1

2}, Yiren Wang³, Yang Lv¹, Haopeng Jiang⁴, Bowen Guo⁵, Xun Feng¹

Affiliations

¹ College of Chemistry and Chemical Engineering, Luoyang Normal University, Luoyang 471934, P. R. China.
² College of Chemistry, Zhengzhou University, Zhengzhou 450001, P. R. China.
³ College of Horticulture and Plant Protection, Henan University of Science and Technology, Luoyang 471934, P. R. China.
⁴ School of Materials Science and Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, P. R. China.
⁵ College of Chemistry and Pharmaceutical Engineering, Nanyang Normal University, Nanyang 473601, P. R. China.

PMID: 38232293
DOI: 10.1021/acs.inorgchem.3c04291

Abstract

A highly promising electrocatalyst has been designed and prepared for the hydrogen evolution reaction (HER). This involves incorporating well-dispersed Ir nanoparticles into a cobalt-based metal-organic framework known as Co-BPDC [Co(bpdc)(H₂O)₂, BPDC: 4,4'-biphenyldicarboxylic acid]. Ir@Co-BPDC demonstrates exceptional HER activity in alkaline media, surpassing both commercial Pt/C and recent noble-metal catalysts. Theoretical results indicate that electron redistribution, induced by interfacial bonds, optimizes the adsorption energy of water and hydrogen, thereby enhancing our understanding of the superior properties of Ir@Co-BPDC for HER.