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Effect of metal nature on specific adsorption of Cl-, Br -, and I- ions from N-methylformamide solutionsстатья
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 16 декабря 2014 г.
- Авторы: Emets V.V., Damaskin B.B.
- Журнал: Journal of Electroanalytical Chemistry
- Том: 712
- Год издания: 2014
- Издательство: Elsevier Sequoia
- Местоположение издательства: Switzerland
- Первая страница: 62
- Последняя страница: 73
- DOI: 10.1016/j.jelechem.2013.09.019
- Аннотация: The differential capacitance curves were measured with an ac bridge in the M/[N-MF + 0.1m M KCl + 0.1(1 - m) M KClO4], M/[N-MF + 0.1m M KBr + 0.1(1 - m) M KClO4], and M/[N-MF + 0.1m MKI + 0.1(1 - m) M KClO 4] systems (where M = In-Ga, Tl-Ga) at the following values of molar fraction m of the surface-active anion: 0, 0.01, 0.02, 0.05, 0.1, 0.2, 0.5, and 1. The I-, Br- and Cl- (Hal-) anions specific adsorption in the above systems can be described quantitatively by the Frumkin isotherm. The main parameters of adsorption of the I-, Br-, and Cl- anions were determined for the studied interfaces. Unlike Ga/N-MF interface, where the adsorption energy (О”G ads) increased in the sequence Br- ≈ I- < Cl-, at the (In-Ga)/N-MF and (Tl-Ga)/N-MF interfaces, same as at the Hg/N-MF interface, it increased in the reverse sequence: Cl- < Br- < I-. It is found that the values of О”G ads, energy of metal-Hal- interaction (О”GM-Hal -), and difference (О”GM-Hal1–О”GM -Hal2-) grow in the series of (Tl-Ga) < (In-Ga) < Ga. The metal-Hal- interaction energy increase in the sequence of О”GM-Cl->О”GM-Br->О”GM-I-. The values of difference (О”GM-Hal1–О”GM-Hal2-) are higher for the Ga electrode and lower for the (In-Ga) and (Tl-Ga) electrodes than the values of difference between the Hal- solvation energies (О”GS -Hal1–О”GS-Hal2-), which determines the sequences of Hal- adsorption. В© 2013 Published by Elsevier B.V.
- Добавил в систему: Дамаскин Борис Борисович