Department of Chemical Engineering, Sri Sivasubramaniya Nadar College of Engineering, Chennai, 603 110, India; Centre of Excellence in Water Research (CEWAR), Sri Sivasubramaniya Nadar College of Engineering, Chennai, 603 110, India.
Department of Chemical Engineering, Sri Sivasubramaniya Nadar College of Engineering, Chennai, 603 110, India; Centre of Excellence in Water Research (CEWAR), Sri Sivasubramaniya Nadar College of Engineering, Chennai, 603 110, India.
Environ Res. 2023 Jan 1;216(Pt 1):114463. doi: 10.1016/j.envres.2022.114463. Epub 2022 Oct 5.
An electrochemical sensor detection of sulfamethoxazole was performed using a copper oxide Molybdenum sulfide modified glassy carbon electrode using Molybdenum sulfide (CuO/MoS) functionalization. As part of the characterization process, materials were characterized via cyclic voltammetry (CV), Square wave voltammetry (SWV), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), X-ray diffraction (XRD) and scanning electron microscopy (SEM). To optimize the performance of the experiment, parameters like the scan rate and pH, the electrolytes study, the stability, the comparative study and repeatability were optimized. In comparison to CuO, MoS and bare Glassy carbon electrode (GCE), an electrochemical sensor that incorporated CuO/MoS exhibited exceptional electrochemical performance. CuO/MoS modified electrodes showed a higher peak current for oxidation compared with bare, CuO and MoS modified electrodes, which demonstrated enhanced electrochemical conductivity for detection of SMX by minimizing oxidation potential from +0.18 V to +0.10 V. In the range of 100-800 μl SMX concentrations, the peak current linearly correlated with the concentration of SMX. In the calibration plot, the modified electrode showed linearity under ideal circumstances for SMX concentrations starting at 0.3 μM. This study investigated the presence of SMX with a detection limit of 0.34 Pg/L. CuO/MoS based electrochemical sensor, according to our analysis, are potentially useful in applications requiring the detection of trace amounts of SMX.
采用铜氧化物硫化钼修饰玻碳电极，对磺胺甲恶唑进行电化学传感器检测。在进行材料特性化过程中，使用硫化钼（CuO/MoS）功能化，通过循环伏安法（CV）、方波伏安法（SWV）、傅里叶变换红外光谱（FTIR）、扫描电子显微镜（SEM）、X 射线衍射（XRD）和扫描电子显微镜（SEM）对材料进行了特性化。为了优化实验性能，对参数（如扫描速率和 pH 值、电解质研究、稳定性、比较研究和重复性）进行了优化。与 CuO、MoS 和裸玻碳电极（GCE）相比，电化学传感器中加入 CuO/MoS 表现出卓越的电化学性能。与裸电极、CuO 和 MoS 修饰电极相比，CuO/MoS 修饰电极的氧化峰电流更高，这表明通过将氧化电位从+0.18 V 降低至+0.10 V，CuO/MoS 修饰电极对 SMX 的检测具有增强的电化学导电性。在 100-800 μl SMX 浓度范围内，峰电流与 SMX 的浓度呈线性相关。在标定图中，在理想条件下，修饰电极对 SMX 浓度从 0.3 μM 开始表现出线性关系。本研究通过检测限为 0.34 Pg/L 的实验，对 SMX 的存在情况进行了调查。根据我们的分析，基于 CuO/MoS 的电化学传感器在需要检测痕量 SMX 的应用中具有潜在的用途。
