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首页> 外文期刊>International Journal of Electrochemical Science >Modification of a Carbon Paste Electrode with a ZnO@ZIF-8 Nanocomposite and Fabrication of a Highly Sensitive Electrochemical Sensor for Sulfamethoxazole Detection
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Modification of a Carbon Paste Electrode with a ZnO@ZIF-8 Nanocomposite and Fabrication of a Highly Sensitive Electrochemical Sensor for Sulfamethoxazole Detection

机译：用ZnO @ ZIF-8纳米复合材料改性碳浆料电极和高敏电化学传感器的制造，用于磺胺甲恶唑检测

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摘要

A highly sensitive electrochemical nanostructure sensor based on a ZnO@ZIF-8 nanocompositemodified carbon paste (ZnO@ZIF-8/CPE) electrode was constructed for trace analysis of sulfamethoxazole (SMX). ZnO@ZIF-8 was synthesized by the hydrothermal method and characterized using scanning electron microscopy and X-ray diffraction. Electrochemical experiments demonstrated a synergistic effect of ZnO and ZIF-8 that endowed the prepared sensor with excellent electrocatalytic behavior towards SMX oxidation. Under optimal conditions, the ZnO@ZIF-8/CPE sensor demonstrated a wide linear range of 0.04-50 μM for SMX and a regression coefficient of 0.9914 and a limit of detection of 0.02 μM. The sensor possessed good stability, selectivity, anti-jamming ability and reproducibility and was successfully used for SMX determinations in egg samples. The proposed sensor is ready to use for biomedicine and environmental protection monitoring.
机译：构建基于ZnO ZIF-8纳米分化碳浆（ZnO ZIF-8 / CPE）电极的高敏感的电化学纳米结构传感器以进行磺胺甲恶唑（SMX）的痕量分析。 通过水热法合成ZnO @ ZIF-8，并使用扫描电子显微镜和X射线衍射表征。 电化学实验证明了ZnO和ZIF-8的协同作用，其赋予制备的传感器，具有优异的电催化行为朝向SMX氧化。 在最佳条件下，ZnO @ ZIF-8 / CPE传感器显示SMX的宽线性范围为0.04-50μm，回归系数为0.9914，检测限为0.02μm。 传感器具有良好的稳定性，选择性，抗干扰能力和再现性，并成功用于蛋样中的SMX测定。 所提出的传感器已准备好用于生物医生和环保监测。

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