Quantitative Voltammetry in Weakly Supported Media: Effects of the Applied Overpotential and Supporting Electrolyte Concentration on the One Electron Oxidation of Ferrocene in Acetonitrile

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• 作者：Juan G. Limon-Petersen ; Ian Streeter ; Neil V. Rees ; Richard G. Compton
• 刊名：Journal of Physical Chemistry C
• 出版年：2009
• 出版时间：January 8, 2009
• 年：2009
• 卷：113
• 期：1
• 页码：333-337
• 全文大小：146K
• 年卷期：v.113,no.1(January 8, 2009)
• ISSN：1932-7455

文摘

Chronoamperometry is reported on the one electron oxidation of 3 mM ferrocene in acetonitrile using a 300 ± 5 μm radius gold hemisphere electrode. Varying concentrations of supporting electrolyte (tetra-n-butylammonium perchlorate) are used ranging from the fully supported (100 mM) to the almost completely unsupported (0.1 mM). The response is simulated using the Nernst−Plank−Poisson system of equations and excellent agreement between theory and experiment noted, so vindicating a recent theory (J. Phys. Chem. C, 2008, 112, 13716) for voltammetry in weakly supported media.