| 抗坏血酸在聚对羟基苯甲酸(poly-PHB)修饰玻碳上的电催化 |
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| 引用本文： | 余建国,王永乐,韩李梅,谷慧科,赵永男,张恒彬.抗坏血酸在聚对羟基苯甲酸(poly-PHB)修饰玻碳上的电催化[J].应用化学,2009,26(9):1117-1119. |
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| 作者姓名： | 余建国 王永乐 韩李梅 谷慧科 赵永男 张恒彬 |
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| 作者单位： | (1.天津工业大学材料科学与化学工程学院,改性与功能纤维天津市重点实验室 天津 300160;
2.吉林大学化学学院 长春) |
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| 基金项目： | 天津市教委科技发展基金，天津工业大学科研启动基金 |
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| 摘 要： | 过循环伏安制备了聚对羟基苯甲酸修饰的玻碳电极。考察了该电极对抗坏血酸的电催化性能。结果显示，聚对羟基苯甲酸修饰玻碳电极对抗坏血酸有很好的电催化作用。在修饰后的电极上产生的峰电流比修饰前的电极产生的峰电流大4倍，氧化峰电位负移189 mV。其氧化峰电流与抗坏血酸浓度在2.6×10-5~3.68 ×10-4mol/L范围内呈线性关系，相关性系数为0.9984，检测限为5×10-6 mol/L(S /N = 3)。在AA与UA共存的体系中，能排除多巴胺对抗坏血酸测定的干扰。
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| 关 键 词： | 对羟基苯甲酸 抗坏血酸 电催化 伏安法 |
| 收稿时间： | 2008-09-02 |
| 修稿时间： | 2008-11-03 |
Electrocatalytic Oxidation of Ascorbic Acid at Poly(para-hydroxybenzoic acid) (poly-PHB) modified glassy carbon electrode |
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| YU Jian-Guo,WANG Yong-Le,HAN Li-Mei,GU Hui-Ke,DIAO Yong-Nan,ZHANG Heng-Bin.Electrocatalytic Oxidation of Ascorbic Acid at Poly(para-hydroxybenzoic acid) (poly-PHB) modified glassy carbon electrode[J].Chinese Journal of Applied Chemistry,2009,26(9):1117-1119. |
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| Authors: | YU Jian-Guo WANG Yong-Le HAN Li-Mei GU Hui-Ke DIAO Yong-Nan ZHANG Heng-Bin |
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| Institution: | (1.College of Materials Science and Chemistry Engineering & Tianjin Key Laboratory of Fiber ;
Modification and Functional Fiber,Tianjin Polytechnic University,Tianjin 300160;
2.College of Chemistry,Jilin University,Changchun) |
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| Abstract: | Poly(para-hydroxybenzoic acid) (poly-PHB) modified glassy carbon electrode was prepared by cyclic voltammetry. The electrocatalytic activity of ascorbic acid(AA) was explored at the poly-PHB GCE. The results showed a good electrocatalytic ability for AA and current increased on the film modified GCE. The peak potential was shift negatively from 0. 2383 V to 0.0496 V. A linear relationship existed between the catalytic current and the AA concentration in the range of 2.6 ×10-5 to 3.68 ×10-4 mol/L with a correlation coefficient of 0.9984 (n = 11). The detection limit (S/N = 3) was 5×10- 6 mol/L. The poly-PHB GCE exhibited an effective and fast catalytic response to the oxidation of AA with good reproducibility and stability. |
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| Keywords: | para-hydroxybenzoic acid ascorbic acid electrocatalysis voltammetry |
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