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Adsorption behavior of 1-adamantanecarboxylic acid and its effect on the electroreduction of anions in solutions of different pHстатья
Информация о цитировании статьи получена из
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Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
- Авторы: Stenina E.V., Fedorovich N.V., Borzenko M.I., Shokova E.A.
- Журнал: Russian Journal of Electrochemistry
- Том: 34
- Номер: 12
- Год издания: 1998
- Издательство: Maik Nauka/Interperiodica Publishing
- Местоположение издательства: Russian Federation
- Первая страница: 1321
- Последняя страница: 1328
- Аннотация: Effect of solution pH on the adsorption behavior of 1-adamantanecarboxylic acid (1-AdCOOH), which forms at the interface electrode/solution two-dimensional condensed layer, is studied along with the acid’s effect on electroreduction of the S2O82- and BrO4- anions. When recording the potential dependences of the differential capacitance, it is found that, in the pH interval 4.0-6.2, at a constant concentration of 1-AdCOOH, a transition is observed from a complete coverage of the surface by a condensed layer to disappearance at relatively high pH values of effects that are typical for a two-dimensional condensation of organic compounds. Correspondingly, in this pH interval, a transition takes place from a strong inhibition of processes of the electroreduction of anions to its complete termination. In the case of the BrO4- anion, during the reduction of which the near-electrode layer experiences alkalization, at some pH values, the effect is discovered of noncoincidence of regions of potentials of adsorption and inhibition of the process which disappears in relatively acidic (pH ≈ 4.0) and buffer solutions. The effects discovered are explained from the viewpoint of a participation of 1-AdCOOH in acidic-basic equilibriums both in the bulk solution and in the near-electrode layer. Estimates are conducted of pH and concentration of 1-AdCOOH in the near-electrode layer. © 1998 MAHK Hayka/Interperiodica Publishing.
- Добавил в систему: Борзенко Марина Игоревна