ROTATING-DISK ELECTRODES - THE THEORY OF CHRONOAMPEROMETRY AND ITS USE IN MECHANISTIC INVESTIGATIONS
ROTATING-DISK ELECTRODES - THE THEORY OF CHRONOAMPEROMETRY AND ITS USE IN MECHANISTIC INVESTIGATIONS
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DOI：
10.1098/rspa.1988.0076
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发表时间：
1988-07-08
影响因子：
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通讯作者：
UNWIN, PR
中科院分区：
文献类型：
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作者：
COMPTON, RG;LAING, ME;UNWIN, PR
提出了一种计算旋转圆盘电极电位阶跃实验时安培响应的通用计算策略。该方法适用于广泛的电极反应机理，并对ECE、DISP1、DISP2、EC’和CE反应的单步和双步电位实验给出了理论结果。对于最后一种情况，该处理扩展到涵盖反应物具有严重不均匀扩散系数的情况。还推导了稳态行为。确定了可以区分各种机制途径的程度，并确定了必要的实验。
A general computational strategy is presented for the calculation of the chronoamperometric responses arising from potential-step experiments at rotating disc electrodes. The method is applicable to a wide range of electrode reaction mechanisms and theoretical results are given for single- and double-potential-step experiments for ECE, DISP1, DISP2, EC' and CE reactions. For the last, the treatment is extended to cover the case where reactants have grossly unequal diffusion coefficients. Steadystate behaviour is also deduced. The extent to which the various mechanistic pathways can be distinguished is identified and the necessary experiments defined.