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Updated: Jan 17, 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
Hydroxyl-regulated CoMoO4 nanotubes as an efficient bifunctional electrocatalyst for the hydrogen/oxygen evolution
1New Energy Materials and Devices Research Team, College of New Energy, Jingchu University of Technology, Jingmen, China.
Erythritol functionalization enhances cobalt molybdate nanotubes, boosting their performance as electrocatalysts for hydrogen and oxygen evolution reactions. This surface engineering strategy improves active sites and charge transfer for better energy conversion.
Area of Science:
- Materials Science
- Electrochemistry
- Catalysis
Background:
- Cobalt molybdate (CoMoO4) bimetallic oxides are promising electrocatalysts for hydrogen/oxygen evolution reactions (HER/OER).
- Synergistic effects between Mo conductivity and Co redox capacity enhance CoMoO4 performance.
- Surface atom tailoring is common, but functional group introduction for improved active sites is less explored.
Purpose of the Study:
- To investigate the effect of surface functionalization with hydroxyl groups on CoMoO4 nanotubes for enhanced electrocatalytic HER/OER.
- To explore erythritol as a regulating agent for CoMoO4 surface structure and electronic properties.
Main Methods:
- Synthesis of erythritol-regulated CoMoO4 (CoMoO4-E) nanotubes.
- Electrochemical characterization of HER and OER performance in alkaline solution.
- Analysis of surface structure, active sites, electron interaction, and charge/ion transport.
Main Results:
- CoMoO4-E nanotubes exhibited increased active sites, improved electron interaction, and facilitated charge/ion transport.
- Enhanced hydrogen/oxygen gas diffusion was observed in CoMoO4-E.
- Excellent HER activity (-87 mV at -10 mA cm-2) and OER activity (254 mV at 10 mA cm-2) were achieved.
Conclusions:
- Erythritol-mediated surface engineering effectively enhances CoMoO4 electrocatalysts for HER/OER.
- The strategy provides new insights for developing advanced bimetallic oxide electrocatalysts.
- Functional group introduction is a viable approach to optimize catalyst performance.
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