Abstract Silver was electrodeposited onto glassy carbon electrode from 0.1 mM AgClO4 acetonitrile solution containing 0.1 M LiClO4. The electrochemical deposition was carried out at constant potential of −0.5 V vs. SCE. The surface morphology was studied by scanning electron microscopy and the average particle size was determined to be 45 nm to 90 nm when increasing the deposition time from 10 s to 300 s. The rotating disk electrode (RDE) method was employed for oxygen reduction studies in 0.1 M KOH solution. It was determined that the final product for the reaction is water and the rate-determining step is the slow transfer of the first electron to O2 molecule. The specific activities (SA) and mass activities (MA) were calculated from the RDE results and the latter was independent of the deposition time. The method used to determine electroactive surface area of Ag influenced substantially the determination of SA values.

中文翻译：

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非水溶液中电化学沉积银纳米颗粒的氧还原反应

摘要 将银从含有 0.1 M LiClO4 的 0.1 mM AgClO4 乙腈溶液电沉积到玻碳电极上。电化学沉积在-0.5 V vs. SCE 的恒定电位下进行。通过扫描电子显微镜研究表面形貌，当沉积时间从 10 s 增加到 300 s 时，平均粒径确定为 45 nm 到 90 nm。旋转圆盘电极 (RDE) 方法用于在 0.1 M KOH 溶液中进行氧还原研究。确定反应的最终产物是水，决定速率的步骤是第一个电子向 O2 分子的缓慢转移。比活度 (SA) 和质量活度 (MA) 由 RDE 结果计算得出，后者与沉积时间无关。