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Updated: Jan 15, 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
Enhanced mesoporous metal-support interaction through d-d orbitals hybridization for advanced hydrogen evolution
Simiao Sha1, Yunting Zhu1, Jing Zhang1
1School of Materials Science and Engineering, Shanghai University, Shanghai 200444, China.
This study engineered Co-doped MoP nanoparticles within CMK-5 carbon to enhance the strong metal-support interaction (SMSI) for efficient hydrogen evolution reaction (HER) catalysis.
Area of Science:
- Materials Science
- Catalysis
- Electrochemistry
Background:
- Strong metal-support interaction (SMSI) improves catalytic activity through charge transfer but has limitations in electronic structure control and adsorption energy tuning.
- Transition metal phosphides (TMPs) confined in ordered mesoporous carbon offer a platform for advanced catalyst design.
Purpose of the Study:
- To systematically engineer transition metal phosphides (TMPs) confined within CMK-5 carbon to enhance catalytic performance.
- To investigate the synergistic effects of cobalt doping and CMK-5 confinement on molybdenum phosphide (MoP) for improved hydrogen evolution reaction (HER).
Main Methods:
- Confined MoP nanoparticles within the hierarchical channels of 3D ordered mesoporous carbon (CMK-5).
- Introduced electron-rich cobalt atoms into the MoP/CMK-5 composite to modify electronic structure and hydrogen adsorption.
- Utilized X-ray Photoelectron Spectroscopy (XPS) to confirm SMSI and charge redistribution.
- Employed Density Functional Theory (DFT) to analyze electronic structure modulation and d-band center shifts.
Main Results:
- Confirmed SMSI between phosphide and CMK-5 via PC bond formation (XPS).
- Co doping synergistically enhanced SMSI through charge redistribution, weakening excessive hydrogen adsorption on Mo sites.
- DFT revealed CoMo hybrid regulated the d-band center, optimizing hydrogen adsorption for HER.
- Co-MoP/CMK-5 exhibited a low overpotential (62 mV at 10 mA cm⁻²) and excellent stability (>60 h) for HER in 1 M KOH.
Conclusions:
- The engineered Co-MoP/CMK-5 catalyst demonstrates significantly enhanced HER performance due to synergistic SMSI and optimized electronic structure.
- Spatial confinement within CMK-5 contributes to the catalyst's remarkable stability.
- This approach provides a viable strategy for designing advanced electrocatalysts with tunable properties.
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