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首页> 外文期刊>International Journal of Electrochemical Science >A Novel Rutin Electrochemical Sensor Using Reduced Graphene Oxide/Magnetite/Silver Nanoparticle-Molecularly Imprinted Polymer Composite Modified Electrode
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A Novel Rutin Electrochemical Sensor Using Reduced Graphene Oxide/Magnetite/Silver Nanoparticle-Molecularly Imprinted Polymer Composite Modified Electrode

机译：还原石墨烯/磁铁矿/银纳米粒子-分子印迹聚合物复合修饰电极的新型芦丁电化学传感器

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摘要

A novel rutin (RT) electrochemical sensor was fabricated by using reduced graphene oxide (rGO)/magnetite (Fe3O4)/silver nanoparticle (Ag)-molecularly imprinted polymer (MIP) composite to modify screen-printed electrode (SPE). The ternary composite of rGO/Fe3O4/Ag was prepared by the one-step solvothermal method. Subsequently, RT molecules were absorbed on the surface of rGO/ Fe3O4/Ag due to the electrostatic force. Finally, the MIP was achieved by a polymerization reaction. The prepared composite was investigated by FTIR, XRD and VSM. The morphologies and electrochemical properties of different electrodes were characterized with FE-SEM, EIS, CV and DPV. Under the optimal conditions, the SPE│rGO/Fe3O4/Ag-MIP electrode exhibited highly sensitive and selective in determining of RT. The linear detection ranges (LDRs) were 1.0×10-2 to 10.0 μM (R=0.9978) and 10.0 to 3.0×103 μM (R=0.9965). The limit of detection (LOD) was as low as 4.2×10-3 μM (S/N=3). The proposed electrode was renewable, stable and reliable. It was used for determining RT in pharmaceutical samples with satisfactory results, confirming its promising application in routine RT analysis.
机译：利用还原的氧化石墨烯（rGO）/磁铁矿（Fe3O4）/银纳米颗粒（Ag）-分子印迹聚合物（MIP）复合材料修饰丝网印刷电极（SPE），制备了新型芦丁（RT）电化学传感器。通过一步溶剂热法制备了rGO / Fe3O4 / Ag三元复合物。随后，由于静电力，RT分子被吸收在rGO / Fe3O4 / Ag的表面上。最后，通过聚合反应实现了MIP。 FTIR，XRD和VSM对制备的复合材料进行了研究。用FE-SEM，EIS，CV和DPV表征了不同电极的形貌和电化学性能。在最佳条件下，SPE│rGO/ Fe3O4 / Ag-MIP电极对RT的测定具有很高的灵敏度和选择性。线性检测范围（LDR）为1.0×10-2至10.0μM（R = 0.9978）和10.0至3.0×103μM（R = 0.9965）。检测限（LOD）低至4.2×10-3μM（S / N = 3）。所提出的电极是可再生的，稳定的和可靠的。它用于测定药物样品中的RT，结果令人满意，证实了其在常规RT分析中的应用前景。

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