Study of the Electrocatalytic Reaction of Hydrogen Peroxide Mediated byAzobenzene Monolayer with Several Multipotential Pulse Techniques

J. González, C. Soto, Á. Molina
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Abstract

The comparison between the response corresponding to a simple charge transfer taking place at an electroactive monolayer with that of an electrocatalytic process at a modified electrode are presented by using the multipulse potential techniques cyclic staircase voltammetry (CSCV) and cyclic square wave voltammetry (CSWV). General analytical and explicit equations for the IE responses have been tested by means of the study of the reduction of azobenzene monolayer at mercury electrode. The value of the chemical rate constant ( k c ' = 40 M  1 s  1 ) has been easily obtained from the cathodic plateau of the CSCV curves and from the best fitting between theoretical and experimental CSWV curves.
偶氮苯单分子膜催化过氧化氢电催化反应的多势脉冲技术研究
利用多脉冲电位技术,循环阶梯伏安法(CSCV)和循环方波伏安法(CSWV)比较了电活性单层上发生的简单电荷转移与修饰电极上电催化过程的响应。通过研究偶氮苯单层在汞电极上的还原,对IE响应的一般解析方程和显式方程进行了测试。化学速率常数k c′= 40 M1 s1由CSCV曲线的阴极平台和理论与实验曲线的最佳拟合得到。
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