Department of Chemical Engineering, Sri Sivasubramaniya Nadar College of Engineering, Chennai, 603110, Tamil Nadu, India; Centre of Excellence in Water Research (CEWAR), Sri Sivasubramaniya Nadar College of Engineering, Chennai, 603 110, Tamil Nadu, India.
Centre of Excellence in Water Research (CEWAR), Sri Sivasubramaniya Nadar College of Engineering, Chennai, 603 110, Tamil Nadu, India; Department of Electronics and Communication Engineering, Sri Sivasubramaniya Nadar College of Engineering, Chennai, 603110, Tamil Nadu, India.
Food Chem Toxicol. 2022 Sep;167:113311. doi: 10.1016/j.fct.2022.113311. Epub 2022 Jul 19.
The electrochemical behavior of sulfamethoxazole (SMX) was investigated on the surface of the glassy carbon electrode with Nafion coated GO, ZnO, GO-ZnO nanocomposites using cyclic voltammetry (CV). The results of voltammetric studies exhibited a considerable increase in background current on SMX detection at nafion coated GO-ZnO nanocomposite GC electrodes. However, the adopted fabrication procedure for GC electrodes was reported previously but only difference is nafion was drop casted over the fabricated nanocomposite electrode. In order to investigate the electrochemical performance behavior of GO/GCE, ZnO/GCE, GO-ZnO/GCE, variation on ZnO amounts with Nafion coated and uncoated GO/GC electrodes were involved and it was analyzed using cyclic voltammetry in 5 mM KFeCN using 0.1 M KCl solution electrolyte medium. In GO-ZnO/GC electrode, peak currents got reduced when compared with GO/GC electrode but their potential voltage difference (peak-to-peak) separation was increased. Similar results was observed for nafion coated GO-ZnO/GC electrode. On comparing the electrochemical process, the importance of nafion coated GO-ZnO nanocomposites were studied and proceeded with optimized amounts of modifier on the electrode surface for SMX detection. Thus Nf/GO-ZnO with different ZnO ratios performance showed significant response on determining SMX, resulting to progress as electrode sensor for health-care applications.
采用循环伏安法（CV）研究了磺胺甲恶唑（SMX）在涂有 Nafion 的玻碳电极表面上的电化学行为。通过伏安研究的结果表明，在涂有 Nafion 的 GO-ZnO 纳米复合材料 GC 电极上检测到磺胺甲恶唑时，背景电流有了相当大的增加。然而，所采用的 GC 电极的制造过程以前曾有报道，但唯一的区别是 Nafion 滴铸在制造的纳米复合材料电极上。为了研究 GO/GCE、ZnO/GCE、GO-ZnO/GCE 的电化学性能行为，我们研究了涂覆和未涂覆 Nafion 的 GO/GC 电极上 ZnO 含量的变化，并使用 0.1 M KCl 溶液电解质介质中的 5 mM KFeCN 进行循环伏安法分析。在 GO-ZnO/GC 电极中，与 GO/GC 电极相比，峰电流减小，但它们的电位电压差（峰-峰）分离增加。涂覆有 Nafion 的 GO-ZnO/GC 电极也观察到了类似的结果。在比较电化学过程时，研究了涂覆有 Nafion 的 GO-ZnO 纳米复合材料的重要性，并在电极表面上进行了优化量的修饰剂研究，以用于 SMX 的检测。因此，具有不同 ZnO 比例的 Nf/GO-ZnO 表现出对测定 SMX 的显著响应，从而作为电极传感器用于医疗保健应用。
