Chem. J. Chinese Universities ›› 2025, Vol. 46 ›› Issue (5): 20240529.doi: 10.7503/cjcu20240529

• Physical Chemistry • Previous Articles     Next Articles

Metalloporphyrin/Multi-walled Carbon Nanotubes Composites for Electrocatalytic Hydrogen Evolution Reaction

LIU Zhaozhen, YAO Yanfang, FANG Kun, LYU Yunrui, YE Yong(), LIU Haiyang()   

  1. School of Chemistry and Chemical Eengineering,Key Laboratory of Fuel Cell Technology of Guangdong Province,South China University of Technology,Guangzhou 510641,China
  • Received:2024-12-02 Online:2025-05-10 Published:2025-03-05
  • Contact: YE Yong, LIU Haiyang E-mail:yeyong@scut.edu.cn;chhyliu@scut.edu.cn
  • Supported by:
    the National Natural Science Foundation of China(21671068)

Abstract:

In this paper, 5,10,15,20-tetraphenylporphyrin(TPP) complexes of transition metals(MTPP, M=Co, Cu, Mn, Ni, Fe) were prepared and the metalloporphyrin/multi-walled carbon nanotubes composites(MTPP/ MWCNTs) for electrocatalytic hydrogen evolution reaction(HER) were fabricated by non-covalent interactions. The results showed that the composite CoTPP/MWCNTs exhibited the best electrocatalytic HER performance when the loading amount(mass fraction) of metalloporphyrin was 10%. The ultraviolet-visible diffuse reflectance spectroscopy(UV-Vis DRS) and X-ray photoelectron spectroscopy(XPS) results showed that there are strong π-π interactions between the metalloporphyrin and the multi-walled carbon nanotubes. The catalytic activities of MTPP/MWCNTs follows the order of Co>Cu>Mn>Ni>Fe. Among them, the CoTPP/MWCNTs shows an overpotential of 631 mV at the current density of 10 mA/cm2, the smallest Tafel slope(161.3 mV/dec) and charge transfer resistance(10.3 Ω), suggesting the utilization of the non-covalent combination of metalloporphyrin with multi-walled carbon nanotubes is an effective way to construct composite electrocatalysts.

Key words: Metalloporphyrin, Multi-walled carbon nanotubes, Noncovalent interaction, Electrocatalysis, Hydrogen evolution reaction

CLC Number: 

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