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<p>In this study, we successfully developed a palladium nanoparticles (Pd NPs)-based anode catalyst for methanol oxidation by depositing Pd NPs onto nitrogen-doped reduced graphene oxide (N-rGO). The deposition was achieved through a reduction loading method employing poly(2,5-thienyl-3-(3-pyridyl)thiophene) (PDTPrT)-modified N-rGO. The structural features of the catalyst were comprehensively characterized using scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS). These analyses indicated a significantly enhanced synergistic interaction between PDTPrT and N-rGO. Furthermore, the Pd nanoparticles were uniformly dispersed on the PDTPrT/N-rGO composite surface, with an average particle size of 4.73&#xa0;nm. The electrocatalytic performance of the synthesized Pd/PDTPrT/N-rGO catalyst was assessed via cyclic voltammetry, chronoamperometry, and electrochemical impedance spectroscopy. The catalyst exhibited a notably high electrochemically active surface area of 51.60 mg<sup>2</sup>g<sup>−1</sup>. In a 0.5&#xa0;M KOH solution containing 1.0&#xa0;M methanol, it demonstrated a mass activity of 760&#xa0;mA&#xa0;mg<sup>−1</sup>, which is 1.9 times greater than that of the Pd/N-rGO catalyst. This substantial enhancement in electrocatalytic performance is attributed to the modification of N-rGO with PDTPrT, which improved the overall conductivity of the support.</p> Graphical Abstract

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Pendant pyridinyl-grafted polyterthiophene/N-rGO composites supported Pd NPs to facilitate methanol oxidation reactions in alkali media

  • 期刊论文

  • 发表日期：

    2026年2月14日

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  • Xue Yao,
  • Abdukeyum Abdurexit,
  • Ruxangul Jamal,
  • Bahtiyar Ahat,
  • Tursun Abdiryim,
  • Hui-Ying Wu,
  • Zhi-Wei Li,
  • Shu-Yue Xie,
  • Yan-Qiang Zhou

摘要

In this study, we successfully developed a palladium nanoparticles (Pd NPs)-based anode catalyst for methanol oxidation by depositing Pd NPs onto nitrogen-doped reduced graphene oxide (N-rGO). The deposition was achieved through a reduction loading method employing poly(2,5-thienyl-3-(3-pyridyl)thiophene) (PDTPrT)-modified N-rGO. The structural features of the catalyst were comprehensively characterized using scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS). These analyses indicated a significantly enhanced synergistic interaction between PDTPrT and N-rGO. Furthermore, the Pd nanoparticles were uniformly dispersed on the PDTPrT/N-rGO composite surface, with an average particle size of 4.73 nm. The electrocatalytic performance of the synthesized Pd/PDTPrT/N-rGO catalyst was assessed via cyclic voltammetry, chronoamperometry, and electrochemical impedance spectroscopy. The catalyst exhibited a notably high electrochemically active surface area of 51.60 mg2g−1. In a 0.5 M KOH solution containing 1.0 M methanol, it demonstrated a mass activity of 760 mA mg−1, which is 1.9 times greater than that of the Pd/N-rGO catalyst. This substantial enhancement in electrocatalytic performance is attributed to the modification of N-rGO with PDTPrT, which improved the overall conductivity of the support.

Graphical Abstract