A sensitive electrochemical sensor based on CoWO4/multi-walled carbon nanotubes for the selective determination of chlorpromazine hydrochloride†

IF 3.6 3区化学 Q2 CHEMISTRY, ANALYTICAL

Analyst Pub Date : 2024-11-15 DOI:10.1039/D4AN01298D

Si Zeng, Peiyao Zhu, Deyu Liu, Yongmei Hu, Qitong Huang and Haiping Huang

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Abstract

In this work, a novel electrochemical sensor based on cobalt tungstate/multi-walled carbon nanotube (CoWO₄/MWCNT) nanocomposites has been used to detect chlorpromazine hydrochloride (CPZ). The CoWO₄/MWCNT nanocomposite was obtained by solvothermal technology and ultrasonic method and analyzed using different characterization techniques such as scanning electron microscopy (SEM), X-ray diffractometry (XRD), energy-dispersive spectroscopy (EDS) and X-ray photoelectron spectroscopy (XPS). The electrochemical behavior of CoWO₄/MWCNT/GCE was explored using cyclic voltammetry (CV). Electrochemical experiments confirm that CoWO₄/MWCNT/GCE exhibits excellent electrocatalytic activity towards CPZ with good selectivity, reproducibility and stability. The linear dynamic range of CPZ was observed to be 1–2000 μM with a detection limit of 0.33 μM. Moreover, the actual sample was analyzed using lake water with satisfactory results, portraying the sensor as a potential candidate for the detection of CPZ.

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基于 CoWO4/多壁碳纳米管的灵敏电化学传感器用于选择性测定盐酸氯丙嗪

在这项研究中，一种基于钨酸钴/多壁碳纳米管（CoWO4/MWCNTs）纳米复合材料的新型电化学传感器被用于检测盐酸氯丙嗪（CPZ）。CoWO4/MWCNTs 纳米复合材料是通过溶热技术和超声波法获得的，并通过扫描电子显微镜（SEM）、X 射线衍射仪（XRD）、能量色散光谱（EDS）和 X 射线光电子能谱（XPS）等不同的表征技术进行了分析。使用循环伏安法 (CV) 探索了 CoWO4/MWCNTs/GCE 的电化学行为。电化学实验证实，CoWO4/MWCNTs/GCE 对 CPZ 具有优异的电催化活性，并具有良好的选择性、重现性和稳定性。CPZ 的线性动态范围为 1-2000 µM，检测限为 0.33 µM。此外，还使用湖水对实际样品进行了分析，结果令人满意。

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