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<p>The combination of semiconductors materials where the zinc oxide (ZnO NRs) is dispersed in the graphene oxide (GO) has attracted research interest due to their improved electrochemical properties when it comes to electroanalytical sensing. Hydrothermal method is implied to make the nanocomposite with the synthesized materials. This prepared nanocomposite with ZnO adhered to the pores of the GO layers is utilized in to modify the Glassy Carbon Electrode (GCE) and applied as a sensor in the monitoring of the sulfamethoxazole (SMX) in water. The working electrode was modified using GO, ZnO and GO/ZnO nanocomposite and were analysed using cyclic voltammetry in [Fe (CN)<sub>6</sub>]<sup>3−/4−</sup> standard electrolyte solution. Later the Differential Pulse Voltammetry (DPV) technique was used in the monitoring of the SMX compound in real water sample with pH adjusted to 7.02. The LOD and LOQ values were found to be 0.07125&#xa0;µg/L and 0.23751&#xa0;µg/L respectively.</p> Graphical Abstract <p></p>

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Electrochemical Sensing of Sulfamethoxazole Antibiotic in Water at Graphene Oxide/Zinc Oxide Nanocomposites Modified Glassy-Carbon Electrode: Optimization and Real Time Measurement

  • 期刊论文

  • 发表日期：

    2025年7月18日

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  • Senthil Rathi Balasubramani,
  • Senthil Kumar Ponnusamy,
  • Nethaji Pavadai,
  • Senthil Theerthagiri

摘要

The combination of semiconductors materials where the zinc oxide (ZnO NRs) is dispersed in the graphene oxide (GO) has attracted research interest due to their improved electrochemical properties when it comes to electroanalytical sensing. Hydrothermal method is implied to make the nanocomposite with the synthesized materials. This prepared nanocomposite with ZnO adhered to the pores of the GO layers is utilized in to modify the Glassy Carbon Electrode (GCE) and applied as a sensor in the monitoring of the sulfamethoxazole (SMX) in water. The working electrode was modified using GO, ZnO and GO/ZnO nanocomposite and were analysed using cyclic voltammetry in [Fe (CN)6]3−/4− standard electrolyte solution. Later the Differential Pulse Voltammetry (DPV) technique was used in the monitoring of the SMX compound in real water sample with pH adjusted to 7.02. The LOD and LOQ values were found to be 0.07125 µg/L and 0.23751 µg/L respectively.

Graphical Abstract