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<p>The present study explores the potential of molybdenum disulfide–reduced graphene oxide/poly(p-aminobenzene sulfonic acid) (MoS<sub>2</sub>-rGO/poly(p-ABSA)) for the detection of morphine (MO). The developed nanocomposites have an interconnected 3D network structure, in which the organic conducting polymer poly(p-ABSA) forms a uniform coating over the surface of the MoS<sub>2</sub>-rGO composite. The composite film synthesis has been optimized to improve the electrocatalytic behavior of the developed sensor. The synergetic effect of MoS<sub>2</sub>-rGO and poly(p-ABSA) composites contributed towards the excellent electrocatalytic activity of the developed sensor against MO. A low detection limit of 76&#xa0;nM with a good regression between MO concentration and peak currents (R<sup>2</sup> = 0.99) has been achieved within the range of 50&#xa0;nM to 30&#xa0;µM. The fabricated sensor was successfully employed to determine MO in real samples and the results showed that it exhibited better reliability for real samples assay. Further, the potential of MoS<sub>2</sub>-rGO/poly(p-ABSA)-based sensor as a commendable electrochemical sensing platform for simple and sensitive detection of various analytes has also been proposed.</p> Graphical Abstract <p></p>

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Electrochemically Modified Sensor Based on Reduced Graphene Oxide–Molybdenum Disulfide–Doped Poly(p-Aminobenzene Sulfonic Acid) Nanocomposite Film for the Detection of Morphine

  • 期刊论文

  • 发表日期：

    2025年5月13日

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  • Pinky Abraham,
  • Renjini Sadhana,
  • Pavitha Pushpakaran Anitha,
  • Akhilash Mohanan Pillai

摘要

The present study explores the potential of molybdenum disulfide–reduced graphene oxide/poly(p-aminobenzene sulfonic acid) (MoS2-rGO/poly(p-ABSA)) for the detection of morphine (MO). The developed nanocomposites have an interconnected 3D network structure, in which the organic conducting polymer poly(p-ABSA) forms a uniform coating over the surface of the MoS2-rGO composite. The composite film synthesis has been optimized to improve the electrocatalytic behavior of the developed sensor. The synergetic effect of MoS2-rGO and poly(p-ABSA) composites contributed towards the excellent electrocatalytic activity of the developed sensor against MO. A low detection limit of 76 nM with a good regression between MO concentration and peak currents (R2 = 0.99) has been achieved within the range of 50 nM to 30 µM. The fabricated sensor was successfully employed to determine MO in real samples and the results showed that it exhibited better reliability for real samples assay. Further, the potential of MoS2-rGO/poly(p-ABSA)-based sensor as a commendable electrochemical sensing platform for simple and sensitive detection of various analytes has also been proposed.

Graphical Abstract