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Ion Transport Across Liquid|Liquid Interfacial Boundaries Monitored at Generator‐Collector Electrodes |
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| Authors: | Anne Vuorema Helen Meadows Norahim Bin Ibrahim Javier Del?Campo Montserrat Cortina‐Puig Mikhail Yu Vagin Arkady A Karyakin Mika Sillanpää Frank Marken |
| Institution: | 1. Laboratory of Applied Environmental Chemistry, Department of Environmental Sciences,University of Eastern Finland, Patteristonkatu 1, 50100 Mikkeli, Finland;2. Department of Chemistry, University of Bath, Bath BA2?7AY, UK;3. Faculty of Biosciences & Bioengineering, Department of Biological Sciences, Universiti Teknologi Malaysia, 81310, Skudai, Malaysia;4. IMB‐CNM. CSIC, Campus de la Universidad Autónoma de Barcelona, Bellaterra 08193, Spain;5. Faculty of Chemistry, M.?V. Lomonosov Moscow State University, Lenin's Hills, GSP‐3, 119991, Moscow, Russia;6. Faculty of Technology, Lappeenranta University of Technology, Patteristonkatu 1, FI‐50100 Mikkeli, Finland |
| Abstract: | 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? |
| Keywords: | Electrochemistry Cobalt Phthalocyanine 4‐(3‐Phenylpropyl)‐pyridine Triple phase boundary Ion transfer Generator Collector Interdigitated array Gold electrode |