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<p> An&#xa0;electrochemical sensor based on MXene/PANI/SnO<sub>2</sub> nanomaterials was developed for the detection of 4-aminophenol&#xa0;(4-AP). In situ oxidative growth of PANI on the MXene surface effectively hindered the stacking of the lamellae and increased the specific surface area of the composites. Further complexation of tin dioxide with swelling properties of the structure provided adsorption and catalytic sites for 4-AP. The prepared electrochemical sensor displayed good Linearity in the concentration range 0.50 ~ 115.38&#xa0;µM and low detection limit (LOD = 0.19&#xa0;µM). The&#xa0;sensor also had good reproducibility and stability. The MXene/PANI/SnO<sub>2</sub>/GCE sensor was applied to the determination of tablets and Yellow River water, and expressed high recoveries and low relative standard deviations.</p> Graphical Abstract <p></p>

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MXene/PANI/SnO2 electrochemical sensor for the determination of 4-aminophenol

  • 期刊论文

  • 发表日期：

    2025年9月9日

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  • Jing Chen,
  • Wenli Xue,
  • Yaqin Shi,
  • Wenjing Liu,
  • Rongfang Ma

摘要

An electrochemical sensor based on MXene/PANI/SnO2 nanomaterials was developed for the detection of 4-aminophenol (4-AP). In situ oxidative growth of PANI on the MXene surface effectively hindered the stacking of the lamellae and increased the specific surface area of the composites. Further complexation of tin dioxide with swelling properties of the structure provided adsorption and catalytic sites for 4-AP. The prepared electrochemical sensor displayed good Linearity in the concentration range 0.50 ~ 115.38 µM and low detection limit (LOD = 0.19 µM). The sensor also had good reproducibility and stability. The MXene/PANI/SnO2/GCE sensor was applied to the determination of tablets and Yellow River water, and expressed high recoveries and low relative standard deviations.

Graphical Abstract