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Ceria supported ruthenium(0) nanoparticles: Highly efficient catalysts in oxygen evolution reaction
Elif Demir1, Serdar Akbayrak2, Ahmet M Önal1
1Department of Chemistry, Middle East Technical University, 06800 Ankara, Turkey.
Ruthenium nanoparticles on ceria show high catalytic activity for the oxygen evolution reaction (OER) in water electrolysis. This novel catalyst offers a low onset potential and stable performance, advancing electrocatalysis research.
Area of Science:
- Materials Science
- Electrochemistry
- Catalysis
Background:
- The oxygen evolution reaction (OER) is crucial for water electrolysis and renewable energy technologies.
- Developing efficient and stable electrocatalysts for OER remains a significant challenge.
Purpose of the Study:
- To prepare and characterize Ruthenium(0) nanoparticles on ceria (Ru 0/CeO 2) as a novel electrocatalyst.
- To evaluate the catalytic activity and stability of Ru 0/CeO 2 on a glassy carbon electrode (GCE) for OER in alkaline media.
Main Methods:
- Synthesis of Ru 0/CeO 2 nanoparticles on a GCE.
- Electrochemical characterization of the catalyst using cyclic voltammetry and chronoamperometry.
- Evaluation of OER performance in an alkaline solution at room temperature.
Main Results:
- Ru 0/CeO 2/GCE demonstrated high catalytic activity for OER.
- Achieved a low onset potential of 1.57 V vs. RHE and an overpotential of 420 mV vs. RHE at 10 mA/cm -2.
- The catalyst exhibited excellent stability, with no change in onset potential after 6.1 hours of OER measurement.
Conclusions:
- Ruthenium(0) nanoparticles supported on ceria are effective electrocatalysts for the oxygen evolution reaction.
- The Ru 0/CeO 2/GCE system offers a promising low-cost, high-performance alternative for water electrolysis.
- The catalyst's stability suggests its potential for long-term industrial applications.
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