Specific adsorption of chloride ions on liquid Ga electrode from N-methylformamide solutions with constant ionic strength

被引：18
作者：
Emets, V. V. [1 ]
Damaskin, B. B. [2 ]
机构：
[1] Russian Acad Sci, Frumkin Inst Phys Chem & Electrochem, Moscow 119071, Russia
[2] Moscow MV Lomonosov State Univ, Fac Chem, Moscow 119992, Russia
来源：
RUSSIAN JOURNAL OF ELECTROCHEMISTRY | 2011年 / 47卷 / 12期
关键词：
gallium electrode; N-methylformamide; specific adsorption of Cl(-) anions; Frumkin isotherm; DOUBLE-LAYER STRUCTURE; SURFACE; SOLVENTS; MERCURY; INTERFACE; GALLIUM; CATIONS; ANIONS;
D O I：
10.1134/S1023193511120044
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
Differential capacitance curves are measured by mans of an ac-bridge in the system Ga/[N-MF + 0.1m M KCl + 0.1(1 - m) M KClO(4)] with the surface-active anion taken in the following molar fractions m: 0, 0.01, 0.02, 0.05, 0.1, 0.2, 0.5, and 1. As compared with the other solvents, N-methylformamide (N-MF) makes it possible to realize the highest positive charges of the Ga electrode at which the electrode remains ideally polarizable (up to 20 mu C/cm(2)). The data on the specific adsorption of Cl(-) ions in the mentioned system can be described qualitatively by the Frumkin isotherm in which the free energy is considered as a linear function of the electrode charge.
引用
收藏
页码：1319 / 1326
页数：8
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