Chem. J. Chinese Universities ›› 2025, Vol. 46 ›› Issue (3): 20240464.doi: 10.7503/cjcu20240464

• Physical Chemistry • Previous Articles     Next Articles

Ultra-fast Synthesis of Highly Dispersed Pt Nanoparticles Loaded on Carbon Nanotubes by Nanosecond Pulsed Laser for Hydrogen Evolution Reaction

WEN Ying, CHEN Rongsheng(), NI Hongwei()   

  1. State Key Laboratory of Refractories and Metallurgy,School of Materials and Metallurgy,Wuhan University of Science and Technology,Wuhan 430081,China
  • Received:2024-10-14 Online:2025-03-10 Published:2024-11-27
  • Contact: NI Hongwei E-mail:chenrs@wust.edu.cn;nihongwei@wust.edu.cn
  • Supported by:
    the National Key Research and Development Program of China(2020YFC1909702-4);the National Natural Science Foundation of China(U21A20317)

Abstract:

The most efficient catalysts for hydrogen evolution reaction(HER) under the acidic environment are still based on platinum group metals and its alloys. Usually, the size and distribution of the active component particles on the carrier of Pt-based catalysts are important factors affecting the activity, selectivity, and stability of the catalysts. In this paper, highly dispersed Pt nanoparticles with uniform size distribution were loaded on multi-walled carbon nanotubes(MWCNT) by nanosecond pulsed laser irradiation for HER applications. Plasma generated by laser irradiation of MWCNT can efficiently reduce H2PtCl6 to metallic Pt atoms, which then assembled highly dispersed Pt nanoparticles of 2—3 nm in diameter on the side walls of MWCNT. The defects caused some Pt nanoparticles to be embedded in the walls of MWCNT during laser irradiation. Comparied with mixed MWCNT/Pt catalysts, electronic interactions between Pt(0) and MWCNT in L-Pt/MWCNT facilitate the reaction kinetics. The L-Pt/MWCNT catalyst exhibited high activity and good stability towards HER, with an overpotential of 39 mV at a current density of 10 mA/cm2 and a Tafel slope of 15 mV/dec.

Key words: Hydrogen evolution reaction, Pt nanoparticles, Carbon nanotubes, Nanosecond pulsed laser

CLC Number: 

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