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Effects caused by an unequal approach of acetonitrile dipoles to the mercury surface and the surface of the gallium metalsстатья
Информация о цитировании статьи получена из
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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
- Авторы: Emets V.V., Damaskin B.B., Kazarinov V.E.
- Журнал: Russian Journal of Electrochemistry
- Том: 33
- Номер: 11
- Год издания: 1997
- Издательство: Maik Nauka/Interperiodica Publishing
- Местоположение издательства: Russian Federation
- Первая страница: 1193
- Последняя страница: 1201
- Аннотация: The differential capacitance curves and potentials of zero charge for the Hg, Ga, In-Ga, and Tl-Ga electrodes are measured in acetonitrile solutions of a surface-inactive electrolyte under identical experimental conditions. The solvent-potential drops at the gallium subgroup metals with respect to the mercury electrode are shown to contain two contributions. One is a chemisorption contribution associated with different donor-acceptor interactions of the metals with molecules of acetonitrile. The other is a physical contribution that is caused by an unequal expansion of the electronic density of the metals beyond their ionic carcasses. It is found that the chemisorption potential drop of acetonitrile at the Tl-Ga electrode relative to the Hg electrode is equal to zero and grows on going to the In-Ga and Ga electrodes. It is demonstrated that the difference between the distances of the nearest approach of the solvent dipoles to the surface of the metals is virtually independent of the solvent nature in both proton solvents (water and methanol) and aprotic solvents (acetonitrile), provided there is no metal-solvent chemisorption interaction. © 1997 MAEe cyrillic signK Hayκa/Interperiodica Publishing.
- Добавил в систему: Дамаскин Борис Борисович