Ion Transport Across Liquid|Liquid Interfacial Boundaries Monitored at Generator-Collector Electrodes
Ion Transport Across Liquid|Liquid Interfacial Boundaries Monitored at Generator-Collector Electrodes
复制标题
在发生-收集电极处监测的跨液体|液体界面边界的离子传输
DOI：
10.1002/elan.201000368
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发表时间：
2010
期刊：
影响因子：
3
通讯作者：
F. Marken
中科院分区：
文献类型：
--
作者：
Anne Vuorema;Anne Vuorema;H. Meadows;Norahim Ibrahim;Norahim Ibrahim;J. Campo;M. Cortina;M. Vagin;A. Karyakin;M. Sillanpää;M. Sillanpää;F. Marken
用交叉型金带阵列电极研究了液/液界面上的阴离子迁移过程。含有Co(II)的有机相4-(3-苯丙基)-吡啶以无规液滴形式固定在电极表面，然后浸泡在水溶液中。钴(II)在发生电极上的氧化与阴离子从水相到有机相的转移有关。阴/阳离子在电极间隙的扩散时间延迟了阴离子在集电极上的反还原。采用基于有限差分数值模拟模型的工作曲线，估算了阴离子在有机相(Pf6−)中的表观扩散系数
Anion transfer processes at a liquid|liquid interface were studied with an interdigitated gold band array electrode. The organic phase, 4-(3-phenylpropyl)-pyridine containing Co(II)phthalocyanine, was immobilised as random droplets at the electrode surface and then immersed into aqueous electrolyte. Oxidation of Co(II)phthalocyanine at the generator electrode was shown to be associated with anion transfer from the aqueous into the organic phase. The corresponding back reduction at the collector electrode with anion expulsion was delayed by the anion/cation diffusion time across the interelectrode gap. A working curve based on a finite difference numerical simulation model was employed to estimate the apparent diffusion coefficients for anions in the organic phase (PF6−