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Article Dans Une Revue Applied Surface Science Année : 2002

Adsorption of cadmium ions at the electrolyte/silica interface: II. Theoretical study of surface energetic heterogeneity

Résumé

The equations developed by us for the triple layer surface complexation approach, taking into account energetic heterogeneity of surface oxygen, are applied here to study the heterogeneity influences on the adsorption of cadmium ions at the NaClO4/silica aqueous solution interface. The model of surface heterogeneity made it possible to fit in a quantitative way the data obtained in the four independent experiments: surface charge measurements (titration), measurements of electrophoretic mobility and monitoring radiometrically cation of inert electrolyte adsorption, together with cadmium ion adsorption at different pH values. Particularly the studies of cadmium ion adsorption show that the energetic heterogeneity of the silica surface oxygen should be taken into account.

Dates et versions

hal-00345853 , version 1 (10-12-2008)

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Robert Charmas, Wojtek Piasecki, Wladyslaw Rudzinski, Benedicte Prelot, Fabien Thomas, et al.. Adsorption of cadmium ions at the electrolyte/silica interface: II. Theoretical study of surface energetic heterogeneity. Applied Surface Science, 2002, 196 (1-4), pp.331-342. ⟨10.1016/S0169-4332(02)00071-5⟩. ⟨hal-00345853⟩

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