Reducing noble metal dependence: oxygen evolution reaction with a Ru-minimized Bi2Ru2O7@MOF-801 composite

P Sujita; Keshav Gupta; V Gopal; S Sarmila; Sethumathavan Vadivel

doi:10.1039/d4nr04140b

Reducing noble metal dependence: oxygen evolution reaction with a Ru-minimized Bi₂Ru₂O₇@MOF-801 composite

Nanoscale. 2025 Jan 10. doi: 10.1039/d4nr04140b. Online ahead of print.

Authors

P Sujita¹, Keshav Gupta², V Gopal¹, S Sarmila¹, Sethumathavan Vadivel¹

Affiliations

¹ Department of Chemistry, Faculty of Engineering and Technology, SRM Institute of Science and Technology, Kattankulathur, Tamil Nadu, 603203, India. [email protected].
² Department of Computing Technologies (CTECH), School of Computing, Faculty of Engineering and Technology, SRM Institute of Science and Technology, Kattankulathur, Tamil Nadu, 603203, India.

PMID: 39791231
DOI: 10.1039/d4nr04140b

Abstract

Developing efficient and noble metal-minimized electrocatalysts for the oxygen evolution reactions (OER) is critical for energy conversion reactions. Here we present Ru-minimized Bi₂Ru₂O₇@MOF-801 that synergistically combines the high catalytic activity of the bimetallic oxide with the unique structural and hydrophilic properties of the Zr-MOF. The composite achieves superior OER performance with a low overpotential of 307 mV at 50 mA cm^-2 and a Tafel slope of 99.8 mV dec^-1 surpassing those of pure Bi₂Ru₂O₇ and MOF-801. Comparative testing with cutting-edge catalysts shows that using less Ru and incorporating a MOF work well together, providing a promising way to make high-performance OER catalysts that are also cost-effective by integrating the MOF for energy applications.