Voltammetry of hydroxide ion in aqueous solutions on gold microelectrodes
Abdelsalam, Mmdouh Elsayed, Denuault, Guy, Baldo, M.Antonietta and Daniele, Salvatore (1998) Voltammetry of hydroxide ion in aqueous solutions on gold microelectrodes. Journal of Electroanalytical Chemistry, 449, (1-2), 5-7. (doi:10.1016/S0022-0728(98)00053-9)
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Description/Abstract
A well-defined wave for the oxidation of hydroxide ions was recorded with gold microdisc electrodes either in sodium sulphate or sodium perchlorate solutions made basic with sodium hydroxide. The wave appeared at about 1.3 V versus SCE, just before the background discharge. The plot of the limiting current corresponding to this wave against the radius of a series of microdisc electrodes gave a straight line which indicated that the process is diffusion controlled. Similarly, the limiting current was found to depend linearly on pH over the range 9-12.5. To our knowledge, the results presented in this article provide the first experimental evidence for the diffusion-controlled electrochemical oxidation of hydroxide ions in aqueous solutions. (C) 1998 Elsevier Science S.A. All rights reserved.
| Item Type: | Article |
|---|---|
| Additional Information: | ZZ066 |
| ISSN: | 0022-0728 (print) |
| Uncontrolled Keywords: | microelectrode, hydroxide oxidation |
| Subjects: | Q Science > QD Chemistry T Technology > TK Electrical engineering. Electronics Nuclear engineering |
| Divisions: | University Structure - Pre August 2011 > School of Chemistry |
| ePrint ID: | 179247 |
| URI: | http://eprints.soton.ac.uk/id/eprint/179247 |
| Deposited On: | 31 Mar 2011 15:05 |
| Last Modified: | 01 Jun 2011 02:19 |
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