Abstract The quasi-reversible one-electron reduction of oxygen in dimethylsulfoxide is reported for a range of electrode materials (C, Pt, Pd, and Au) and temperatures (293–343 K). Modelling was undertaken using Butler-Volmer and symmetric Marcus-Hush methods, with the former found to provide more reproducible results for this system, in agreement with previous reports of quasi-reversible systems. The reorganisation energy for the reaction was found to be ca. 1.0 eV, and the reaction confirmed to be predominantly outer-sphere. The observed standard electrochemical rate constant (k0) is ca. 5.7 times faster for C electrodes than Pt, despite having a lower electronic density of states.

中文翻译：

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二甲亚砜中氧的电化学还原动力学

摘要 据报道，在一系列电极材料（C、Pt、Pd 和 Au）和温度（293-343 K）下，二甲亚砜中氧的准可逆单电子还原。建模是使用 Butler-Volmer 和对称 Marcus-Hush 方法进行的，发现前者为该系统提供了更多可重复的结果，与之前关于准可逆系统的报告一致。发现反应的重组能约为。1.0 eV，并且确认反应主要是外球体。观察到的标准电化学速率常数 (k0) 约为。尽管具有较低的电子态密度，但 C 电极比 Pt 快 5.7 倍。