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Estimating of Surface Activity of Cl- and Br- Ions in the (In-Ga)/[N-Methylformamide plus mc KCl + (1-m)c KClO4] and (In-Ga)/[N-Methylformamide plus mc KBr + (1-m)c KClO4] Systems by Different Methodsстатья
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: 12 октября 2013 г.
- Авторы: Emets V.V., Damaskin B.B.
- Журнал: Russian Journal of Electrochemistry
- Том: 49
- Номер: 6
- Год издания: 2013
- Издательство: Maik Nauka/Interperiodica Publishing
- Местоположение издательства: Russian Federation
- Первая страница: 537
- Последняя страница: 544
- DOI: 10.1134/S1023193513060050
- Аннотация: Differential capacitance curves in the (In–Ga)/[Nmethylformamide + mc KCl + (1 – m)c KClO4] and (In–Ga)/[N-methylformamide + mc KBr + (1 – m)c KClO4] systems are measured using an ac bridge for the following molar portions m of the surfaceactive anion: 0, 0.01, 0.02, 0.05, 0.1, 0.2, 0.5, and 1. The Cl– and Br– anions specific adsorption in the systems can be described quantitatively by the Frumkin isotherm. The principal parameters of Cl– and Br– anions adsorption at the (In–Ga)/Nmethylformamide interface are determined by different methods. Unlike Ga/Nmethylformamide interface, where the adsorption energy increased in the sequence I– ≈ Br– < Cl–, at the (In–Ga)/Nmethylformamide interface it increased in the reverse sequence: Cl– < Br– < I–. The adsorption parameters at the charge density q = 0, obtained by three different methods, are close to each other. However, the parameters α1 and α2, which characterize the charge effect on the adsorption energy, when determined by the analyzing of dependences of adsorption potential drop Eads on ln(mc), differ from those determined by two other methods. The error may be caused by the assuming that the adsorption potential drop is proportional to the coverage of dense layer with the specifically adsorbed ions.
- Добавил в систему: Дамаскин Борис Борисович