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Correspondence between the Frumkin and Alekseev-Popov-Kolotyrkin models at the adsorption of neutral organic moleculesстатья
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.
- Автор: Damaskin B.B.
- Журнал: Russian Journal of Electrochemistry
- Том: 43
- Номер: 1
- Год издания: 2007
- Издательство: Maik Nauka/Interperiodica Publishing
- Местоположение издательства: Russian Federation
- Первая страница: 9
- Последняя страница: 16
- DOI: 10.1134/S1023193507010028
- Аннотация: By the example of a system Hg/(H2O + xM NaF + yM n-C 4H9OH) for four x values (0.01, 0.03, 0.1, and 0.3) in combination with six different y values (in a range from 0.05 to 0.8), an assumption on the simultaneous fulfillment of the classical model of the diffuse layer and the model of two parallel capacitors supplemented by the Frumkin isotherm is analyzed. It is shown that the classical theory of the diffuse layer agrees with experimental data on the capacitance in this system and also on the adsorption of secondary butanol not only near the zero-charge potential but also in the vicinity of adsorption-desorption peaks where the electrode charge reaches absolute values of 6-10 μC/cm2. At the same time, the experimental differential capacitance curves in this system are well described by the model of two parallel capacitors supplemented by the Frumkin isotherm (the Frumkin model) for all supporting-electrolyte concentrations. However, this model is far less accurate in describing the calculated curves of the dense-layer differential capacitance, which contradicts the straightforward physical basis of the Alekseev-Popov-Kolotyrkin model. To resolve this contradiction, further studies with the use of molecular models are necessary. © Nauka/Interperiodica 2007.
- Добавил в систему: Дамаскин Борис Борисович