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Molybdenum-Induced Pore Expansion in CoFe-Nanomesh for Efficient Oxygen Evolution Reaction
Shashank Sharma1, Parul Aggarwal1, Amit Paul1
1Department of Chemistry, Indian Institute of Science Education and Research (IISER) Bhopal, Bhopal, Madhya Pradesh, India.
Chemistry, an Asian Journal
|March 27, 2026
Summary
Molybdenum doping transforms cobalt-iron oxide nanomesh pores, enhancing oxygen evolution reaction (OER) performance. This pore modification boosts catalyst activity and stability for energy applications.
Area of Science:
- Materials Science
- Electrochemistry
- Nanotechnology
Background:
- Ink-bottle type mesopores in nanomaterials can limit catalytic activity.
- Developing efficient catalysts for oxygen evolution reaction (OER) is crucial for energy technologies.
Purpose of the Study:
- To engineer hierarchical mesopores in cobalt-iron oxide nanomesh via molybdenum doping.
- To enhance the catalytic activity and stability for the oxygen evolution reaction (OER).
Main Methods:
- Molybdenum doping of CoFe2O4 nanomesh.
- Characterization using FTIR, SEM, TEM, AFM, and BET analyses.
- Electrochemical testing for OER performance evaluation.
Main Results:
- Transformed ink-bottle mesopores into slit-type hierarchical mesopores.
- CoFe20Mo5 exhibited an overpotential of 318 mV and mass activity of 429 A/g for OER.
- Achieved a roughness factor of 1238, indicating significantly enhanced ion accessibility.
Conclusions:
- Molybdenum doping effectively restructures pores and enhances electrical properties of CoFe2O4 nanomesh.
- The hierarchical mesoporous structure and improved conductivity lead to superior OER activity and stability.
- This approach offers a promising strategy for designing advanced electrocatalysts.
