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<p>A practical electrochemical sensor for the salicylic acid detection based on an amine group functionalized multi-walled carbon nanotubes modified carbon felt electrode (MWCNT-MAn/CFE) has been reported in this study. Morphological and structural characterizations of MWCNT-MAn were carried out by scanning electron microscopy, transmission electron microscopy and Fourier transform infrared spectroscopy, while the electrochemical measurements were conducted using cyclic and differential pulse voltammetry techniques. A remarkable increment in the salicylic acid oxidation peak current with a facilitated electrochemical reaction was obtained with MWCNT-MAn/CFE compared to the plain CFE. Under the optimum conditions, MWCNT-MAn/CFE exhibited a linear response in the range of 10–250 µM for salicylic acid with a limit of detection of 0.044 µM. Also, the proposed sensor was successfully applied to the salicylic acid detection in pharmaceutical samples.</p> Graphical Abstract <p></p>

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Electrochemical salicylic acid detection based on covalently amine group functionalized multi-walled carbon nanotubes modified carbon felt sensor

  • 期刊论文

  • 发表日期：

    2026年7月26日

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  • Tuğba Ören Varol,
  • Hüseyin Furkan Kıyıkçı,
  • Elif Vargun,
  • Nuri Karakurt,
  • Haojie Fei,
  • Lukáš Münster,
  • Ulku Anik,
  • Petr Slobodian,
  • Natalia Kazantseva,
  • Petr Saha

摘要

A practical electrochemical sensor for the salicylic acid detection based on an amine group functionalized multi-walled carbon nanotubes modified carbon felt electrode (MWCNT-MAn/CFE) has been reported in this study. Morphological and structural characterizations of MWCNT-MAn were carried out by scanning electron microscopy, transmission electron microscopy and Fourier transform infrared spectroscopy, while the electrochemical measurements were conducted using cyclic and differential pulse voltammetry techniques. A remarkable increment in the salicylic acid oxidation peak current with a facilitated electrochemical reaction was obtained with MWCNT-MAn/CFE compared to the plain CFE. Under the optimum conditions, MWCNT-MAn/CFE exhibited a linear response in the range of 10–250 µM for salicylic acid with a limit of detection of 0.044 µM. Also, the proposed sensor was successfully applied to the salicylic acid detection in pharmaceutical samples.

Graphical Abstract