| 聚苯胺纳米纤维修饰石墨箔电极的制备及电化学性能 |
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| 引用本文： | 桑晓光,曾繁武,刘晓霞.聚苯胺纳米纤维修饰石墨箔电极的制备及电化学性能[J].高等学校化学学报,2012,33(6):1312-1318. |
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| 作者姓名： | 桑晓光 曾繁武 刘晓霞 |
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| 作者单位： | 1. 东北大学化学系, 沈阳 110819;
2. 中国科学院金属研究所, 沈阳材料科学国家(联合)实验室, 沈阳 110016 |
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| 摘 要： | 以石墨箔(GF)为工作电极, 采用循环伏安法(CV), 通过电化学聚合, 制备了聚苯胺(PANI)纳米纤维修饰GF电极(Nano-PANI/GF). 利用红外光谱(FTIR)研究了Nano-PANI/GF修饰电极上聚合物的组成, 利用扫描电镜(SEM)观测了Nano-PANI/GF修饰电极的表面形貌. 利用循环伏安法研究了Nano-PANI/GF修饰电极在0.1 mol/L磷酸盐缓冲溶液(pH=6.9)中的电化学活性, 发现Nano-PANI/GF修饰电极在中性溶液中有良好的电化学活性. Nano-PANI/GF修饰电极对抗坏血酸(AA)电化学氧化的催化作用结果表明, 在0.2 V(vs. SCE)电位下, 在浓度范围1.7~2.0×103 μmol/L内, 抗坏血酸的氧化电流与浓度呈良好线性关系, 线性方程式为y=0.00013x+0.0031. 修饰电极对抗坏血酸的最低检测限为1.7 μmol/L(S/N=3).
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| 关 键 词： | 聚苯胺纳米纤维 石墨箔 电化学催化 抗坏血酸 |
| 收稿时间： | 2011-07-16 |
Preparation and Electrochemical Properties of Polyaniline Nanofiber Modified Graphite Foil |
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| SANG Xiao-Guang
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ZENG Fan-Wu
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LIU Xiao-Xia.Preparation and Electrochemical Properties of Polyaniline Nanofiber Modified Graphite Foil[J].Chemical Research In Chinese Universities,2012,33(6):1312-1318. |
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| Authors: | SANG Xiao-Guang ZENG Fan-Wu LIU Xiao-Xia |
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| Institution: | 1. Department of Chemistry, Northeastern University, Shenyang 110819, China;
2. Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China |
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| Abstract: | Polyaniline nanofiber(Nano-PANI) modified graphite foil(GF)(Nano-PANI/GF) was prepared by electrochemical polymerization of aniline on GF electrode.The polymer on the modified electrode Nano-PANI/GF was characterized by FTIR.The morphologies of the modified electrode were investigated by SEM.The Nano-PANI/GF electrode made through cyclic voltammetric scans in a solution of 0.1 mol/L aniline and 1.0 mol/L HCl showed good electroactivites in 0.1 mol/L phosphate buffer solution(pH=6.9).The electrocatalytic properties of the modified electrode toward ascorbic acid oxidation were studied through cyclic voltammetry and potentiometry.The current for ascorbic acid oxidation on the modified electrode at 0.2 V showed linear response to the concentration of ascorbic acid in the range of 1.7-2.0×103μmol/L.The detection limit of ascorbic acid on the modified electrode is 1.7 μmol/L(S/N=3). |
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| Keywords: | Polyaniline nanofiber Graphite foil Electrocatalysis Ascorbic acid |
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