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Search for a model to describe the specific adsorption of anions A− in Ga/[N-Methylformamide + mc KCl + (1 − m)c KClO4] Systems, where KA is KCl, KBr, or KI

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Abstract

The adsorption parameters for systems Ga/[NMF + 0.1m M KCl + 0.1(1 − m) M KClO4], Ga/[NMF + 0.1m M KBr + 0.1(1 − m) M KClO4], and Ga/[NMF + 0.1m M KI + 0.1(1 − m) M KClO4] are calculated by using the regression analysis of the adsorption potential shift vs. electrode charge dependences for the following molar fractions m of the surface-active anion: 0.05, 0.1, 0.2, 0.5, and 1 within the framework of two models. The models are based on the Frumkin isotherm with the free adsorption energy dependent on the electrode charge, of which one model takes into account the diffuse layer and the other ignores it. It is shown that for electrode charges q ≤ 16 μC/cm2, both models provide equal accuracy; however, for higher q, preference should be given to the model that takes into account the contribution of the double layer diffuse part.

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Authors and Affiliations

  1. Faculty of Chemistry, Moscow State University, Vorob’evy Gory, Moscow, 119992, Russia

    B. B. Damaskin & V. A. Safonov

  2. Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Leninskii pr. 31, Moscow, 119071, Russia

    V. V. Emets

Authors
  1. B. B. Damaskin
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  2. V. A. Safonov
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  3. V. V. Emets
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Correspondence to B. B. Damaskin.

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Original Russian Text © B.B. Damaskin, V.A. Safonov, V.V. Emets, 2012, published in Elektrokhimiya, 2012, Vol. 48, No. 9, pp. 999–1004.

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Damaskin, B.B., Safonov, V.A. & Emets, V.V. Search for a model to describe the specific adsorption of anions A− in Ga/[N-Methylformamide + mc KCl + (1 − m)c KClO4] Systems, where KA is KCl, KBr, or KI. Russ J Electrochem 48, 911–916 (2012). https://doi.org/10.1134/S1023193512090054

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  • DOI: https://doi.org/10.1134/S1023193512090054

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