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首页> 外文期刊>International Journal of Electrochemical Science >Graphene/Tungsten trioxide (Gr/WO3) composite modified screen-printed carbon electrode for the sensitive electrochemical detection of nitrofurantoin in biological samples
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Graphene/Tungsten trioxide (Gr/WO3) composite modified screen-printed carbon electrode for the sensitive electrochemical detection of nitrofurantoin in biological samples

机译：石墨烯/三氧化钨（Gr / WO 3 ）复合修饰的丝网印刷碳电极用于生物样品中呋喃妥因的灵敏电化学检测

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摘要

Graphene /tungsten trioxide (Gr/WO 3 ) composites were prepared by a simple method. This compositehas been used as a potential electrode material for the electrochemical detection of nitrofurantoin(NTF). The as-prepared Gr/WO 3 composite was confirmed by X-ray diffraction (XRD), Field-emission scanning electron microscopy (FESEM), and Raman spectroscopy. Besides, theelectrochemical properties of the prepared electrode were identified by different voltammetrytechniques such as cyclic voltammetry (CV) and linear sweep voltammetry (LSV). The Gr/WO 3composite modified screen printed carbon electrode (SPCE) shows an excellent electrocatalyticactivity towards the detection of NTF. The Gr/WO 3 /SPCE electrode detects NTF with a lowerdetection limit (0.002 μM), well linear response range (0.01 - 234 μM) and acceptable sensitivity (2.18μAμM -1 cm -2 ). Moreover, the Gr/WO 3 modified electrode exhibited good selectivity, reproducibilityand higher stability when compared to other modified and unmodified electrodes. In addition to that,Gr/WO 3 /SPCE modified electrode achieved appreciable recoveries for the determination of NTF inbiological samples.
机译：采用简单的方法制备了石墨烯/三氧化钨（Gr / WO 3）复合材料。该复合材料已被用作电化学检测呋喃妥因（NTF）的电位电极材料。通过X射线衍射（XRD），场发射扫描电子显微镜（FESEM）和拉曼光谱法确认了所制备的Gr / WO 3复合材料。此外，通过不同的伏安技术，如循环伏安法（CV）和线性扫描伏安法（LSV）来鉴定所制备电极的电化学性能。 Gr / WO 3复合改性丝网印刷碳电极（SPCE）对NTF的检测显示出优异的电催化活性。 Gr / WO 3 / SPCE电极以较低的检测限（0.002μM），良好的线性响应范围（0.01-234μM）和可接受的灵敏度（2.18μAμM-1 cm -2）检测NTF。此外，与其他修饰和未修饰电极相比，Gr / WO 3修饰电极表现出良好的选择性，可重复性和更高的稳定性。除此之外，Gr / WO 3 / SPCE修饰电极在NTF生物学样品的测定中获得了可观的回收率。

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