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<p>This study demonstrates a highly efficient electrochemical sensing platform for 4-nitrotoluene (4-NT) detection based on nanoflake-rich boron-doped carbon nanowall (NF-BCNW) electrodes. The electrodes, fabricated using a one-step deposition process, exhibit remarkable properties, including fast charge transfer and a developed surface area. The research shows the high efficiency of 4-NT detection in laboratory-grade aqueous samples, with a low detection limit (LOD) of 10.2&#xa0;nM and a high sensitivity of 10.42 ± 0.31 μA µM<sup>−1</sup>&#xa0;cm<sup>−2</sup>. The practical applicability of the 4-NT sensor was also tested in an environmental sample, tap water, resulting in an LOD of 20.5&#xa0;nM. The proposed electrode demonstrated considerable sensitivity for the sensing of 4-NT in the presence of various interfering ions and exhibited high stability over 380&#xa0;days. These findings position the NF-BCNW electrochemical sensor as an effective tool for water safety and environmental monitoring applications.</p> Graphical Abstract <p></p>

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High sensitivity voltammetric sensor of 4-nitrotoluene based on nanoflake-rich boron-doped carbon nanowall electrode for water safety

  • 期刊论文

  • 发表日期：

    2025年3月5日

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  • Paweł Rutecki,
  • Michał Sobaszek,
  • Anna Dettlaff

摘要

This study demonstrates a highly efficient electrochemical sensing platform for 4-nitrotoluene (4-NT) detection based on nanoflake-rich boron-doped carbon nanowall (NF-BCNW) electrodes. The electrodes, fabricated using a one-step deposition process, exhibit remarkable properties, including fast charge transfer and a developed surface area. The research shows the high efficiency of 4-NT detection in laboratory-grade aqueous samples, with a low detection limit (LOD) of 10.2 nM and a high sensitivity of 10.42 ± 0.31 μA µM−1 cm−2. The practical applicability of the 4-NT sensor was also tested in an environmental sample, tap water, resulting in an LOD of 20.5 nM. The proposed electrode demonstrated considerable sensitivity for the sensing of 4-NT in the presence of various interfering ions and exhibited high stability over 380 days. These findings position the NF-BCNW electrochemical sensor as an effective tool for water safety and environmental monitoring applications.

Graphical Abstract