Ion transport across liquid vertical bar liquid interfacial boundaries monitored at generator-collector electrodes
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....
Saved in:
| Main Authors: | , , , , , , , , |
|---|---|
| Format: | Article |
| Published: |
John Wiley & Sons, Inc
2010
|
| Subjects: | |
| Online Access: | http://eprints.utm.my/id/eprint/26236/ http://dx.doi.org/10.1002/elan.201000368 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| Summary: | 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. |
|---|