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Measuring Oxygen Solubility in Micelles
Author(s) -
Nissim Rita,
BatchelorMcAuley Christopher,
Compton Richard G.
Publication year - 2016
Publication title -
chemelectrochem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.182
H-Index - 59
ISSN - 2196-0216
DOI - 10.1002/celc.201500380
Subject(s) - micelle , oxygen , chemistry , solubility , bromide , aqueous solution , inorganic chemistry , electrochemistry , limiting oxygen concentration , electrode , organic chemistry
A novel electrochemical method has been developed for the determination of the oxygen solubility in cetyltrimethylammonium bromide (CTAB) micelles. The electroreduction of oxygen is studied in aqueous phosphate buffer solutions, using a microelectrode. The addition of micelle‐forming surfactants to solutions pre‐saturated with oxygen leads to a reduction of the oxygen signal, allowing the oxygen uptake by the micelles to be measured. For CTAB micelles, an oxygen concentration of 6.7±0.72 m m was observed, which was shown to remain constant with increasing CTAB concentration in the bulk solution. The method has general applicability.