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首页> 外文期刊>Electroanalysis >Electrocatalytic oxidation of some carbohydrates by nickel/poly(o-aminophenol) modified carbon paste electrode
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Electrocatalytic oxidation of some carbohydrates by nickel/poly(o-aminophenol) modified carbon paste electrode

机译：镍/聚（邻氨基苯酚）修饰的碳糊电极对某些碳水化合物的电催化氧化

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摘要

This study investigates the electrocatalytic oxidation of glucose and some other carbohydrates on nickel/poly (o-aminophenol) modified carbon paste electrode as an enzyme free electrode in alkaline solution. Poly(o-aminophenol) was prepared by electropolymerization using a carbon paste electrode bulk modified with o-aminophenol and continuous cyclic voltammetry in HClO4 Solution. Then Ni(II) ions were incorporated to electrode by immersion of the polymeric modified electrode having amine group in 1 M Ni(II) ion solution. Cyclic voltammetric and chronoamperometric experiments were used for the electrochemical study of this modified electrode; a good redox behavior of Ni(OH)(2)/NiOOH couple at the surface of electrode can be observed, the capability of this modified electrode for catalytic oxidation of glucose and other carbohydrates was demonstrated. The amount of a and surface coverage (P) of the redox species and catalytic chemical reaction rate constant (k) for each carbohydrate were calculated. Also, the electrocatalytic oxidation peak currents of all tested carbohydrates exhibit a good linear dependence on concentration and their quantification can be done easily.
机译：这项研究研究了镍/聚（邻氨基苯酚）修饰的碳糊电极上的葡萄糖和其他碳水化合物的电催化氧化，该电极在碱性溶液中为无酶电极。聚（邻氨基苯酚）是通过使用经邻氨基苯酚改性的碳糊电极本体进行电聚合并在HClO4溶液中进行连续循环伏安法制备的。然后通过将具有胺基的聚合物改性电极浸入1M Ni（II）离子溶液中，将Ni（II）离子掺入电极中。循环伏安法和计时电流法实验用于该修饰电极的电化学研究。可以观察到Ni（OH）（2）/ NiOOH偶在电极表面的良好氧化还原行为，证明了该修饰电极对葡萄糖和其他碳水化合物催化氧化的能力。计算每种碳水化合物的氧化还原物质的a量和表面覆盖率（P）以及催化化学反应速率常数（k）。而且，所有测试碳水化合物的电催化氧化峰值电流都表现出良好的线性线性关系，其定量很容易进行。

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