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Silica Coating on Colloidal Maghemite Particles |
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| Authors: | Klotz Ayral Guizard Ménager Cabuil |
| Affiliation: | a Laboratoire des Matériaux et Procédés Membranaires, UMR CNRS 5635, ENSCM, 8, rue de l'Ecole Normale, F34296, Montpellier cedex 5, France;b Laboratoire Liquides Ioniques et Interfaces Chargées, UMR CNRS 7612, Université P. et M. Curie, 4, place Jussieu, 75252, Paris cedex, France |
| Abstract: | Maghemite colloidal particles are coated with a silica layer using a silicon alkoxide as silica precursor. The coating process is studied by electrophoresis, quasi-elastic light scattering, nitrogen adsorption, and infrared spectrometry analyses. The conditions of complete coverage of the iron oxide particles by silica and the nature of the maghemite–silica interface are discussed. |
| Keywords: | maghemite silica coating zetametry quasi-elastic light scattering infrared spectrometry |
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