Abstract
Differential capacity measurements are reported for the adsorption of nicotinic acid (Nc) at the mercury electrode in water using buffered solutions at various pH and aqueous solutions with KF as a supporting electrolyte. The data were analysed to obtain the surface pressure and the surface excess of Nc respectively, as a function of charge and bulk Nc concentrations. Then, using the methods previously developed by Parsons, the Frumkin isotherm constants were determined and compared with those published for the adsorption of pyridine. From results obtained, a structural picture of the adsorption layer has been outlined.
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Schedule a callMore From: Journal of electroanalytical chemistry (Lausanne, Switzerland)
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