Abstract
We add a new method to previously used approaches in corrosion research of copper by applying a direct measurement method for adsorption kinetics which is able to directly monitor in-situ adsorption. For our study we selected a well known system for that: copper surfaces and benzotriazole (BTA) dissolved in methanol. Measurements were performed with our recently developed impedance scanning ...
Abstract
We add a new method to previously used approaches in corrosion research of copper by applying a direct measurement method for adsorption kinetics which is able to directly monitor in-situ adsorption. For our study we selected a well known system for that: copper surfaces and benzotriazole (BTA) dissolved in methanol. Measurements were performed with our recently developed impedance scanning quartz crystal microbalance (QCM). Time dependence of its serial resonance frequency can be used to study the kinetics of adsorption by fitting the measured adsorption curve to the Langmuir adsorption isotherm. The free adsorption energy Delta G(ads) determined by this approach is in accordance with results from literature determined by other electrochemical methods showing that our approach yields reliable results. (C) 2011 Elsevier B.V. All rights reserved.
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