Sorption of cations and anions from a binary electrolyte at uncharged electrode surface: Comparing the monolayer and two-layer adsorption modelsстатья
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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Аннотация:Equations for calculating coverage and decrease in the surface tension Deltasigma during co-adsorption of cations and anions (CA) on an uncharged interface from a binary electrolyte with concentration c are derived. The equations are valid if electric centers of CA are localized in two parallel layers. The Deltasigma vs. lnc curves, computed within this model and a model for co-adsorption in a common layer are compared. The Deltasigma vs. Inc curves, calculated within either model to an accuracy substantially exceeding experimental accuracy, may be formally described with an equation of the Frumkin isotherm for neutral molecules and a corresponding equation for Deltasigma. The link of effective parameters of the Frumkin isotherm with the adsorption parameters of mixed adsorption isotherms of CA depends on the model.