Universiti Teknologi Malaysia Institutional Repository

Ion transport across liquid vertical bar liquid interfacial boundaries monitored at generator-collector electrodes

Ibrahim, Norahim and A., Vuorema and H., Meadows and J., Del Campo and M., Cortina-Puig and M. Y., Vagin and A. A., Karyakin and M., Sillanpaa and F., Marken (2010) Ion transport across liquid vertical bar liquid interfacial boundaries monitored at generator-collector electrodes. Electroanalysis, 22 (24). 2889 - 2896. ISSN 1040-0397

[img] PDF
70Kb

Official URL: http://dx.doi.org/10.1002/elan.201000368

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−<ClO4−<NO3−). Potential applications in ion analysis are discussed.

Item Type:Article
Uncontrolled Keywords:electrochemistry, cobalt, phthalocyanine, 4-(3-phenylpropyl)-pyridine, triple phase boundary, ion transfer, generator, collector, interdigitated array, gold electrode
Subjects:Q Science > Q Science (General)
Divisions:Biosciences and Bioengineering (Formerly known)
ID Code:26236
Deposited By: Liza Porijo
Deposited On:29 Jun 2012 01:18
Last Modified:18 Jul 2012 08:06

Repository Staff Only: item control page