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Study of ferric oxide hydrosols from electrophoresis, coagulation, and peptization measurements

par Dumont, Freddy ;Van Tan, Dang;Watillon, André
Référence Journal of colloid and interface science, 55, 3, page (678-687)
Publication Publié, 1976-06

Article révisé par les pairs

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Résumé :

Coagulation values, electrokinetic potentials and peptization properties of ferric oxide hydrosols were measured in the pH range 2-12 in the presence of various monovalent ions. The observed ionic adsorption sequences are explained in terms of the Gurney concept of the ion-ion interactions extended to the ion surface interactions. From stability and peptization measurements, it is shown that the water structure near the interface changes through the p.z.c. The conclusions deduced from the haematite surface study are extended to other interfaces. © 1976.