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Updated: Jan 20, 2026
Synthesis of Metal Nanoparticles Supported on Carbon Nanotube with Doped Co and N Atoms and its Catalytic Applications in Hydrogen Production
Published on: December 6, 2021
Dual Regulation via Oxyphilic Dysprosium Doping: Stabilizing Oxide Support and Customizing Catalytic Pathway for
Hongyu Wang1, Weijin Cao1, Hao Sun1
1Hebei Provincial Key Laboratory of Green Chemical Technology and High Efficient Energy Saving, Tianjin Key Laboratory of Chemical Process Safety, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin, 300130, China.
Dysprosium-doped copper oxide supports stabilize catalysts for efficient hydrogen evolution reaction (HER) by optimizing the Volmer-Tafel pathway. This rare earth-mediated approach significantly boosts hydrogen production and catalyst durability.
Area of Science:
- Materials Science
- Electrochemistry
- Catalysis
Background:
- Stabilizing oxide supports under cathodic reduction for efficient hydrogen evolution reaction (HER) is a significant challenge.
- Optimizing the Volmer-Tafel pathway is crucial for enhancing HER catalytic activity.
Purpose of the Study:
- To develop a robust catalyst with enhanced stability and optimized HER pathway using dysprosium (Dy) doping.
- To investigate the dual regulatory role of Dy in stabilizing copper oxide (CuO) supports and improving catalytic performance.
Main Methods:
- Synthesis of a Dy-doped CuO supported Rh catalyst (Rh@Dy-CuO).
- Electrochemical characterization of the catalyst for HER performance.
- Assessment of catalyst stability under cathodic reduction conditions.
- Evaluation in an anion exchange membrane water electrolyzer.
Main Results:
- Dy incorporation strengthens the Cu-O bond, maintaining CuO stability and facilitating H2O dissociation.
- Dy doping optimizes charge transfer at the Rh-CuO interface, enhancing adsorbed hydrogen (*H) coverage on Rh.
- The Rh@Dy-CuO catalyst exhibits a mass activity 46 times higher than Pt/C at 100 mV overpotential.
- The catalyst demonstrates excellent performance in an anion exchange membrane water electrolyzer with 1000-hour stability.
Conclusions:
- Dy-driven dual regulation effectively stabilizes oxide supports and tailors HER pathways.
- This approach offers a novel strategy for designing advanced rare earth-mediated electrocatalysts.
- The developed Rh@Dy-CuO catalyst shows significant potential for efficient hydrogen production.
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