Croatica Chemica Acta, Vol. 89 No. 1, 2016.
Original scientific paper
https://doi.org/10.5562/cca2688
Adsorption of N-decanoyl-N-methylglucamine at the Interface Electrode−NaClO4 Solution. Comparison of Adsorption Properties of Different Surfactants
Dorota Gugała-Fekner
; Faculty of Chemistry, Maria Curie-Sklodowska University, Lublin, Poland
Abstract
The electrosorption behaviour of non-ionic surfactant: N-decanoyl-N-methylglucamine on mercury electrode in 1 mol dm−3 NaClO4 solution was determined. The values of the relative surface excess were determined on the basis of double layer differential capacity. A set of parameters of maximal adsorption and the constants of Frumkin, modified Flory-Huggins and virial adsorption isotherms were obtained. It was stated that the adsorption of this surfactant is determined by the adsorption energy, however here is no simple relation between a surface excess and the values of repulsive interactions parameter A. Adsorption properties of three surfactants: cationic, anionic and non-ionic were compared.
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Keywords
electrochemistry; differential capacity; surface; adsorption isotherm; electrosorption; non-ionic surfactant
Hrčak ID:
158794
URI
Publication date:
20.6.2016.
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