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首页> 外文期刊>International Journal of Electrochemical Science >The Electrochemical Behavior of Nafion/Reduced Graphene Oxide Modified Carbon Electrode Surface and Its Application To Ascorbic Acid Determination
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The Electrochemical Behavior of Nafion/Reduced Graphene Oxide Modified Carbon Electrode Surface and Its Application To Ascorbic Acid Determination

机译：Nafion /还原氧化石墨烯修饰碳电极表面的电化学行为及其在抗坏血酸测定中的应用

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In this study, we has utilized electrochemically reduced graphene oxide and nafion co-modified glassycarbon electrode as a novel and sensitive electrochemical sensor for ascorbic acid in weak acid buffer3-solution. The modern voltammetric technique was chosen for studying the redox property of Fe(CN)6 electrochemical probe and electrochemical behavior of ascorbic acid at this modified carbon electrodesurface. We have also proposed a possible mechanism to better understand how to facilitate theelectron transfer between ascorbic acid and modified electrode surface. The electrochemical resultshave suggested that ascorbic acid exhibited a very sensitive anodic peak at about 0.3 V on as-preparedmodified electrode, and its anodic peak current was enhanced about two-times more than that on thebare glassy carbon electrode. A reasonable linear relationship between the anodic peak current and theascorbic acid concentration (0.1~100 mM) and a low detection limit of 10 M were obtained using theprepared modified electrode. More importantly, here the proposed method can be successfully appliedto the practical samples with excellent sensitivity and reproducibility.
机译：在这项研究中，我们利用电化学还原的氧化石墨烯和nafion共修饰的玻璃碳电极作为弱酸缓冲液3中抗坏血酸的新型灵敏电化学传感器。选择了现代伏安法技术来研究Fe（CN）6电化学探针的氧化还原特性和抗坏血酸在该修饰碳电极表面上的电化学行为。我们还提出了一种可能的机制，以更好地理解如何促进抗坏血酸与修饰电极表面之间的电子转移。电化学结果表明，抗坏血酸在制备的修饰电极上约0.3 V处显示出非常敏感的阳极峰，其阳极峰电流比裸玻璃碳电极上增强了约两倍。使用所制备的修饰电极得到了阳极峰值电流与抗坏血酸浓度（0.1〜100 mM）之间的合理线性关系和10 M的低检测限。更重要的是，这里提出的方法可以成功地应用于具有良好灵敏度和重现性的实际样品。

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