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Updated: May 12, 2025

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
A systematic investigation on the advantage of confinement effect by nitrogen doped carbon nanotubes for hydrogen
Yunsi Yan1, Bing Wang2, Chen Li3
1State Key Laboratory for Hubei New Textile Materials and Advanced Processing Technology, School of Materials Science and Engineering, Wuhan Textile University, 430200 Wuhan, China; Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan 430074, China.
Abstract:
Robust hydrogen evolution reaction (HER) electrocatalyst is of significance important for the realization of water splitting technology. In this work, we report the nitrogen doped carbon nanotubes confined CoRu alloy nanoparticles (CoRu@NCNT) as superior HER electrocatalyst. The d band center of Ru atom is downshifted resulting in loosening the hydrogen binding strength; therefore, a robust HER activity is achieved for CoRu@NCNT with mass activity enhanced by 6-time than commercial Pt/C and CoRu/NCNT in both acidic and alkaline mediums. Moreover, compared to CoRu/NCNT electrocatalyst, CoRu@NCNT exhibits a better HER performance attributed to the prevention of avoidable surface oxidation of Ru. Moreover, a more moderate Gibbs free energy for hydrogen is achieved for CoRu@NCNT. Similarly, the stability of CoRu@NCNT outperforms CoRu/NCNT stemming from the NCNT confinement effect suppressing the movement and coalescence of CoRu nanoparticles.
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