Electrochemical detection of rutin with a carbon ionic liquid electrode modified by Nafion, graphene oxide and ionic liquid composite
Electrochemical detection of rutin with a carbon ionic liquid electrode modified by Nafion, graphene oxide and ionic liquid composite
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Nafion、氧化石墨烯和离子液体复合材料修饰的碳离子液体电极电化学检测芦丁
DOI：
10.1007/s00604-012-0811-8
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发表时间：
2012-07-01
影响因子：
5.7
通讯作者：
Zhang, Liqi
中科院分区：
文献类型：
--
作者：
Hu, Song;Zhu, Huanhuan;Zhang, Liqi
本文报道了一种以Nafion、氧化石墨烯和离子液体制成的复合物修饰的碳离子液体电极，并将其应用于芦丁的灵敏测定。用循环伏安法和电化学阻抗谱对修饰电极进行了表征。由于纳米氧化石墨烯和离子液体的存在及其相互作用，它表现出优异的循环伏安和差分脉冲伏安性能。芦丁在pH3.0时出现一对氧化还原峰，峰电流与浓度在0.08 μM ~ 0.1mM范围内呈良好的线性关系，检出限为0.016 μM（3σ）。该修饰电极表现出良好的选择性和稳定性，并成功应用于片剂中芦丁的测定，回收率良好。图A将Nafion、氧化石墨烯和离子液体1-乙基-3-甲基咪唑四氟硼酸盐复合修饰在碳离子液体电极（CILE）上，用于芦丁的灵敏检测。
We report on a carbon ionic liquid electrode modified with a composite made from Nafion, graphene oxide and ionic liquid, and its application to the sensitive determination of rutin. The modified electrode was characterized by cyclic voltammetry and electrochemical impedance spectroscopy. It shows excellent cyclic voltammetric and differential pulse voltammetric performance due to the presence of nanoscale graphene oxide and the ionic liquid, and their interaction. A pair of well-defined redox peaks of rutin appears at pH 3.0, and the reduction peak current is linearly related to its concentration in the range from 0.08 μM to 0.1 mM with a detection limit of 0.016 μM (at 3σ). The modified electrode displays excellent selectivity and good stability, and was successfully applied to the determination of rutin in tablets with good recovery.FigureA Nafion, graphene oxide and ionic liquid 1-ethyl-3-methylimidazolium tetrafluoroborate composite was modified on carbon ionic liquid electrode (CILE) for the sensitive detection of rutin.