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首页> 外文期刊>Proceedings of the institution of mechanical engineers >Electrochemical reaction of riboflavin at carbon nanotubes/Ni composite modified electrode fabricated by composite electrodeposition of carbon-nanotubes and Ni matrix
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Electrochemical reaction of riboflavin at carbon nanotubes/Ni composite modified electrode fabricated by composite electrodeposition of carbon-nanotubes and Ni matrix

机译：碳纳米管与Ni基体复合电沉积制备核黄素在碳纳米管/ Ni复合修饰电极上的电化学反应

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摘要

The paper focuses on the electrochemical behavior of riboflavin (vitamin B2) at carbon nanotubes/Ni composite modified electrode fabricated by composite electrodeposition of carbon nanotubes and Ni matrix. Cyclic voltammetry is used to compare the electrocatalysis activity of the carbon nanotubes/Ni composite modified electrode and the conventional carbon nanotubes modified electrode. The carbon nanotubes/Ni composite modified electrode exhibits a marked enhancement of the current response and a reduction of the voltage peak difference. The oxidation-reduction reactions for different pHs and different riboflavin concentrations are discussed. In phosphate buffer solution, there is a good linear relationship between oxidation and reduction peak current and riboflavin concentration in the range from 10~(-4)to 10~(-6)mol/L with a detection limit of 3.5 × 10~(-7)mol/L After 50 CV cycles in riboflavin, the relative standard deviation is only 4.71 % for the voltage peak, which indicates that the carbon nanotubes/Ni composite modified electrode has a good, reproducible and stable surface.
机译：本文重点研究了核黄素（维生素B2）在碳纳米管/ Ni基体复合电沉积制备的碳纳米管/ Ni复合修饰电极上的电化学行为。循环伏安法用于比较碳纳米管/镍复合修饰电极与常规碳纳米管修饰电极的电催化活性。碳纳米管/ Ni复合改性电极表现出明显的电流响应增强和电压峰差减小。讨论了不同pH和不同核黄素浓度下的氧化还原反应。在磷酸盐缓冲溶液中，氧化还原峰电流与核黄素浓度在10〜（-4）〜10〜（-6）mol / L范围内具有良好的线性关系，检出限为3.5×10〜（ -7）mol / L在核黄素中进行50 CV循环后，电压峰值的相对标准偏差仅为4.71％，这表明碳纳米管/ Ni复合修饰电极具有良好的，可复制的和稳定的表面。

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  • 作者

    Yang Yuan; Liting Wang; Yan Wang; Xuemei Cui; Hong Wang; Guifu Ding;

  • 作者单位

    National Key Laboratory of Nano/Micro Fabrication Technology,Shanghai Jiao Tong University,People's Republic of China;

    LanZhou ChengGuan Third Hospital, People's Republic of China;

    National Key Laboratory of Nano/Micro Fabrication Technology, Research Institute of Nano/Micro Science and Technology, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China;

    National Key Laboratory of Nano/Micro Fabrication Technology,Shanghai Jiao Tong University,People's Republic of China;

    National Key Laboratory of Nano/Micro Fabrication Technology,Shanghai Jiao Tong University,People's Republic of China;

    National Key Laboratory of Nano/Micro Fabrication Technology,Shanghai Jiao Tong University,People's Republic of China;

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  • 正文语种 eng
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  • 关键词

    Carbon nanotubes; composite electrodeposition; riboflavin; cyclic voltammetry; electrocatalysis;

    机译：碳纳米管;复合电沉积核黄素;循环伏安法电催化;

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