Comparative study of Cl-, Br-, and I- ions adsorption from dimethyl formamide at Hg- and Ga-electrodesстатья
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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Авторы:
Emets V.V. ,
Damaskin B.B.
Журнал:
Russian Journal of Electrochemistry
Том:
46
Номер:
9
Год издания:
2010
Издательство:
Maik Nauka/Interperiodica Publishing
Местоположение издательства:
Russian Federation
Первая страница:
1036
Последняя страница:
1041
DOI:
10.1134/S1023193510090090
Аннотация:
The adsorption of Cl-, Br-, and I- ions from their 0.1 M solutions in dimethyl formamide at renewable liquid Hg- and Ga-electrodes was studied under similar experimental conditions by the differential-capacitance and jet-electrode methods. The data obtained points out to a strong effect of the metal nature on adsorption parameters and the halogenide-ion surface activity series. The halogenide-ion surface activity at the Hg-electrode increased in the following sequence: Cl- < Br- < I-; at the Ga-electrode, in the reverse sequence: I- < Br- < Cl-. The results are explained qualitatively in terms of the Andersen-Bockris model. It follows from the obtained data that (1) the free energy of the metal-halogenide-ion interaction increases in the following sequence: I- < Br - < Cl-; (2) the free energy of the Ga-halogenide-ion interaction exceeds that of the Hg-halogenide-ion interaction; and (3) the difference of the Cl-, Br-, and I- ions interaction with the metals increased significantly when passing from Hg - to Ga-electrode. © 2010 Pleiades Publishing, Ltd.
Добавил в систему:
Дамаскин Борис Борисович