Ceria supported ruthenium(0) nanoparticles: Highly efficient catalysts in oxygen evolution reaction

Elif Demir; Serdar Akbayrak; Ahmet M Önal; Saim Özkar

doi:10.1016/j.jcis.2018.09.075

Ceria supported ruthenium(0) nanoparticles: Highly efficient catalysts in oxygen evolution reaction

J Colloid Interface Sci. 2019 Jan 15:534:704-710. doi: 10.1016/j.jcis.2018.09.075. Epub 2018 Sep 22.

Authors

Elif Demir¹, Serdar Akbayrak², Ahmet M Önal³, Saim Özkar¹

Affiliations

¹ Department of Chemistry, Middle East Technical University, 06800 Ankara, Turkey.
² Department of Chemistry, Middle East Technical University, 06800 Ankara, Turkey; Department of Chemistry, Faculty of Arts and Science, Sinop University, 57000 Sinop, Turkey. Electronic address: serdarakbayrak.rg@gmail.com.
³ Department of Chemistry, Middle East Technical University, 06800 Ankara, Turkey. Electronic address: aonal@metu.edu.tr.

PMID: 30268935
DOI: 10.1016/j.jcis.2018.09.075

Abstract

Ruthenium(0) nanoparticles were successfully prepared on the surface of ceria (Ru⁰/CeO₂) and used as catalysts on glassy carbon electrode (GCE) in oxygen evolution reaction (OER) from water electrolysis at room temperature. Ru⁰/CeO₂ on GCE exhibits high catalytic activity for OER in alkaline solution. It provides a low onset potential of 1.57 V vs. RHE and low overpotential of 420 mV vs. RHE to reach a current density of 10 mA cm^-2. Ru⁰/CeO₂ on GCE shows no change in the onset potential value even after 6.1 h electrochemical measurement in OER.

Keywords: Ceria; Electrocatalyst; Oxygen evolution; Ruthenium; Water splitting.