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<p>Energy storage relies on the subtle interface engineering of carbon and other materials to achieve high performance. Herein, a novel electrode nanocomposite material of 1,2,3-benzene tricarboxylic acid diazonium-functionalized carbon nanotube (f-CNTs) with immobilized silver nanoparticles (Ag) is proposed. The physicochemical properties of the resulting nanocomposite f-CNTs@Ag were investigated by SEM, ATG, DRX, XPS, Raman, FT-IR, and UV–vis characterization to account for the synthesis of silver nanoparticles (Ag NPs) and their deposition on the arylated carbon nanotubes. Electrochemical performances, i.e., capacitive behaviors and kinetic reactions on the electrode’s surface, were determined by cyclic voltammetry (CV). EIS was used to impedance of the surface-modified electrodes. The maximum specific capacitance of f-CNTs@Ag is 127.68 F&#xa0;g<sup>−1</sup> at a sweep rate of 10&#xa0;mV&#xa0;s<sup>−1</sup>, and the specific capacitance retention rate is 95% even after 3000 cycles. The excellent properties of MWCNTs combined with the synergic effect of AgNPs make the synthesized nanocomposite exhibit desirable electrochemical performance. These results conclusively demonstrate that using diazonium salt for the immobilization of AgNPs on carbon nanotubes is an easy and effective means of synthesizing promising electrode materials for energy storage.</p> Graphical abstract <p></p>

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Silver Nanoparticles Supported by Carbon Nanotubes Functionalized with 1,2,3-Benzenetricarboxylic Acid: Spectroscopic Analysis and Electrochemical Capacitance

  • 期刊论文

  • 发表日期：

    2025年4月18日

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  • Déthié Faye,
  • Momath Lo,
  • Dame Seye,
  • Cheikh A. B. Diop,
  • Modou G. Diop,
  • Arona Ngom,
  • Mamadou Dieng,
  • Arvind K. Bhakta,
  • Diariatou Gningue-Sall,
  • Mohamed M. Chehimi,
  • Abdoulaye Koné

摘要

Energy storage relies on the subtle interface engineering of carbon and other materials to achieve high performance. Herein, a novel electrode nanocomposite material of 1,2,3-benzene tricarboxylic acid diazonium-functionalized carbon nanotube (f-CNTs) with immobilized silver nanoparticles (Ag) is proposed. The physicochemical properties of the resulting nanocomposite f-CNTs@Ag were investigated by SEM, ATG, DRX, XPS, Raman, FT-IR, and UV–vis characterization to account for the synthesis of silver nanoparticles (Ag NPs) and their deposition on the arylated carbon nanotubes. Electrochemical performances, i.e., capacitive behaviors and kinetic reactions on the electrode’s surface, were determined by cyclic voltammetry (CV). EIS was used to impedance of the surface-modified electrodes. The maximum specific capacitance of f-CNTs@Ag is 127.68 F g−1 at a sweep rate of 10 mV s−1, and the specific capacitance retention rate is 95% even after 3000 cycles. The excellent properties of MWCNTs combined with the synergic effect of AgNPs make the synthesized nanocomposite exhibit desirable electrochemical performance. These results conclusively demonstrate that using diazonium salt for the immobilization of AgNPs on carbon nanotubes is an easy and effective means of synthesizing promising electrode materials for energy storage.

Graphical abstract