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<p>This article presents a novel, facile method for studying the kinetics of liquid-phase synthesis of precious metal nanoparticles. The method is particularly suitable for use in concentrated solutions and under conditions involving gas purging and medium stirring. It is based on the continuous measurement of changes in the solution’s color components and the potential of an indicator electrode during the synthesis process. The method was applied to investigate the effect of solution pH on the kinetics of polyol synthesis of Pt nanoparticles and Pt/C electrocatalysts. The obtained Pt/C electrocatalysts demonstrate high structural-morphological and electrochemical characteristics, surpassing commercial analogs. The simplicity and efficiency of the “kinetic control” technique makes it promising for use in various liquid-phase synthesis technologies.</p>

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Kinetics of platinum nanoparticles nucleation in polyol synthesis over a wide pH range and properties of Pt/C catalysts

  • 期刊论文

  • 发表日期：

    2025年5月1日

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  • Vladimir Guterman,
  • Kirill Paperzh,
  • Ilya Kantsypa,
  • Elena Vetrova,
  • Anatoly Metelitsa,
  • Ilya Pankov,
  • Yulia Pankova

摘要

This article presents a novel, facile method for studying the kinetics of liquid-phase synthesis of precious metal nanoparticles. The method is particularly suitable for use in concentrated solutions and under conditions involving gas purging and medium stirring. It is based on the continuous measurement of changes in the solution’s color components and the potential of an indicator electrode during the synthesis process. The method was applied to investigate the effect of solution pH on the kinetics of polyol synthesis of Pt nanoparticles and Pt/C electrocatalysts. The obtained Pt/C electrocatalysts demonstrate high structural-morphological and electrochemical characteristics, surpassing commercial analogs. The simplicity and efficiency of the “kinetic control” technique makes it promising for use in various liquid-phase synthesis technologies.