Electrochemical behavior of rutin on a multi-walled carbon nanotube and ionic liquid composite film modified electrode
Electrochemical behavior of rutin on a multi-walled carbon nanotube and ionic liquid composite film modified electrode
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芦丁在多壁碳纳米管与离子液体复合膜修饰电极上的电化学行为
DOI：
10.1016/j.colsurfb.2010.07.028
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发表时间：
2010-11-01
影响因子：
5.8
通讯作者：
Lu, Xiaoquan
中科院分区：
文献类型：
--
作者：
Liu, Xiuhui;Li, Li;Lu, Xiaoquan
研究了芦丁在多壁碳纳米管-白介素-凝胶/玻碳电极上的电化学行为。结果表明，该修饰电极对芦丁的氧化具有良好的电催化作用，氧化还原峰电流增大，峰间分离度减小。计算了芦丁的电化学参数，得到电荷转移系数（α）和电极反应标准速率常数（k（s））分别为0.47和0.2 s（-1）。此外，采用电化学阻抗谱（EIS）、扫描电镜（SEM）、粘土膜厚度等方法对MWNTs-IL-Gel/GCE进行了表征。和UV-vis光谱。芦丁在该修饰电极上的氧化峰电流与芦丁浓度在7.2 × 10 ~（-8）~ 6.0 × 10 ~（-8）mol·L ~（-1）范围内呈线性关系，检出限为2.0 × 10 ~（-8）mol·L ~（-1）。结果表明，该电极可用于芦丁的灵敏、简便、快速测定。(C)2010爱思唯尔有限公司版权所有。
In this paper, the electrochemical behaviors of rutin at the MWNTs-IL-Gel/glassy carbon electrode (GCE) were investigated. Good electrocatalysis behavior towards the oxidation of rutin with enhancement of the redox peak current and decrease of the peak-to-peak separation was demonstrated. The electrochemical parameters of rutin were calculated giving values of the charge-transfer coefficient (alpha) and the electrode reaction standard rate constant (k(s)) as 0.47 and 0.2 s(-1), respectively. In addition, the MWNTs-IL-Gel/GCE was characterized by different methods including electrochemical impedance spectroscopy (EIS), scanning electron microscope (SEM), clay film thickness. and UV-vis spectra. The oxidation peak currents of rutin in such modified electrode increased linearly with the concentration of rutin in the range from 7.2 x 10(-8) to 6.0 x 10(-8) mol L-1 with a detection limit of 2.0 x 10(-8) mol L-1. These results suggest that the proposed electrode can be used for sensitive, simple and rapid determination of rutin. (C) 2010 Elsevier B.V. All rights reserved.