Preparation, Characterization, and Electrocatalytic Properties of Mixed‐Valent Nickel Hexacyanoferrate/Phosphomolybdate Hybrid Film Electrodes Towards Oxidation of Ascorbic Acid and Reduction of S2O$\rm{ {_{8}^{2-}}}$
Preparation, Characterization, and Electrocatalytic Properties of Mixed‐Valent Nickel Hexacyanoferrate/Phosphomolybdate Hybrid Film Electrodes Towards Oxidation of Ascorbic Acid and Reduction of S2O$\rm{ {_{8}^{2-}}}$
复制标题
混合价六氰基铁酸镍/磷钼酸镍混合膜电极的制备、表征及其抗坏血酸氧化和 S2O$ 还原的电催化性能{_{8}^{2-}}}$
DOI：
10.1002/elan.200804490
复制
发表时间：
2009
期刊：
影响因子：
--
通讯作者：
R. Thangamuthu
中科院分区：
文献类型：
--
作者：
Shen;C. Liou;A. Balamurugan;R. Thangamuthu
采用多次扫描循环伏安法在玻碳电极上制备了多核混合价铁氰化镍/磷钼酸镍（NiHCF/PMo）、镍/磷钼酸镍（Ni/PMo）杂化膜。单个组分的组合提供了制造与单个组分相比具有可调电化学和分析性质的混合膜的机会。用电化学石英晶体微天平（EQCM）监测膜的生长。铁氰化镍/磷钼酸盐薄膜的循环伏安图由四对氧化还原电对组成，而镍/磷钼酸盐杂化薄膜的循环伏安图由三对氧化还原电对组成。循环伏安特性表明，在这两种膜中的电荷转移过程类似于表面限制的氧化还原物种。发现铁氰化镍/磷钼酸膜电极的伏安响应依赖于接触溶液的pH。采用循环伏安法研究了镍/磷钼酸盐杂化膜涂层电极对抗坏血酸氧化和硫氧阴离子S2 O还原的电催化行为。研究了镍/磷钼酸盐杂化膜电极在安培法和流动注射分析中的应用。
Polynuclear mixed-valent nickelhexacyanoferrate/phosphomolybdate (NiHCF/PMo), nickel/phosphomolybdate (Ni/PMo) hybrid films were prepared on glassy carbon electrode by multiple scan cyclic voltammetry. Combination of individual components gave the opportunity to fabricate hybrid film with tunable electrochemical and analytical properties compared to individual components. The film growth was monitored using electrochemical quartz crystal microbalance (EQCM). The cyclic voltammogram of the nickelhexacyanoferrate/phosphomolybdate film is characterized by four redox couple whereas nickel/phosphomolybdate hybrid film exhibits three redox couples. Cyclic voltammetric features suggest that the charge transfer process in both films resembles that of surface-confined redox species. The voltammetric response of nickelhexacyanoferrate/phosphomolybdate film electrode was found to be depending on the pH of the contacting solution. Electrocatalytic behavior of nickel/phosphomolybdate hybrid film coated electrodes toward oxidation of ascorbic acid and reduction of sulfur oxoanion, S2O, was investigated using cyclic voltammetry technique. Analytical application of nickel/phosphomolybdate hybrid film electrode was tested in amperometry and flow injection analysis.