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首页> 外文期刊>The journal of physical chemistry, C. Nanomaterials and interfaces >Influence of Electrode Roughness on Stripping Voltammetry: Mathematical Modeling and Numerical Simulation
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Influence of Electrode Roughness on Stripping Voltammetry: Mathematical Modeling and Numerical Simulation

机译：电极粗糙度对溶出伏安法的影响：数学建模和数值模拟

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摘要

Electrodes with rough surfaces inevitably have practical importance from both applied and fundamental points of view including electroanalysis where stripping voltammetry is a popular technique due to its simplicity and high sensitivity. The diffusional domain approach is used to model stripping voltammetry at rough electrodes: two models of the electrode surface, "rough" and "scratched", are considered. Electron transfer is described by three models which correspond to cases of stripping of a monolayer, a thin layer, and a bulk layer. The shape of the votammograms strongly depends on the model of the electron transfer but is not always sensitive to the precise model of the electrode surface; the conditions under which this is the case are identified, and generic roughness effects on stripping voltammetry are quantified. We conclude that electrode roughness can have a significant effect on the stripping of the metals from the solid electrode especially in respect of the voltammetric waveshape.
机译：从应用和基本的观点来看，具有粗糙表面的电极不可避免地具有实际重要性，包括电分析，其中溶出伏安法由于其简单性和高灵敏度而成为一种流行的技术。扩散域方法用于对粗糙电极上的溶出伏安法进行建模：考虑了电极表面的两个模型，即“粗糙”和“划痕”。用三种模型描述电子转移，这三种模型分别对应于剥离单层，薄层和体层的情况。伏安图的形状在很大程度上取决于电子转移的模型，但并不总是对电极表面的精确模型敏感。确定这种情况下的条件，并量化对溶出伏安法的一般粗糙度影响。我们得出的结论是，电极粗糙度可能对从固态电极中剥离金属具有重大影响，尤其是在伏安波形方面。

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