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首页> 外文期刊>Electroanalysis >Electrocatalytic Determination of Ascorbic Acid Using a Palladium Coated Nanoporous Gold Film Electrode
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Electrocatalytic Determination of Ascorbic Acid Using a Palladium Coated Nanoporous Gold Film Electrode

机译：钯涂层纳米多孔金膜电极电催化测定抗坏血酸

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摘要

Cyclic voltammetry and differential pulse voltammetry were used to investigate the electrochemical behavior of ascorbic acid (AA) on palladium coated nanoporous gold film (PdNPGF) electrode. The deposition of palladium was done through oxidation of copper UPD layer by palladium ions. This low Pd-loading electrode behaved as the nanostructured Pd for electrocatalytic reaction. The PdNPGF electrode exhibits excellent electrocatalytic behavior by enhancing the AA oxidation peak current due to synergistic influence of the Pd film and NPGF. The kinetic parameters such as electron transfer coefficient, α, was 0.47 and the voltammetric responses of the PdNPGF electrode were linear against concentration of AA in the ranges of 2.50-33.75mM and 0.10-0.50mM with CV and DPV respectively.
机译：采用循环伏安法和差分脉冲伏安法研究了抗坏血酸（AA）在钯包覆的纳米多孔金膜（PdNPGF）电极上的电化学行为。钯的沉积是通过钯离子对UPD铜层的氧化来完成的。这种低Pd负载电极表现为用于电催化反应的纳米结构Pd。由于Pd膜和NPGF的协同作用，PdNPGF电极通过增强AA氧化峰电流而表现出出色的电催化性能。动力学参数如电子传递系数α为0.47，PdNPGF电极的伏安响应与CV和DPV分别为2.50-33.75mM和0.10-0.50mM的AA浓度呈线性关系。

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