Quick Search:    advanced search

GSW Home   GeoRef Home   My GSW Alerts   Contact GSW   About GSW   Journals List   Help

This Article Figures Only Full Text Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Email this article to a friend Similar articles in this journal Similar articles in Web of Science Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via Web of Science (4) Citing Articles via Google Scholar Google Scholar Articles by BOURLINOS, A. B. Articles by PETRIDIS, D. Search for Related Content GeoRef GeoRef Citation

Magnetite and Co ferrite-based clay composites

Institute of Materials Science, NCSR "Demokritos", 15310 Ag. Paraskevi Attikis, Greece

^* E-mail: dpetrid{at}ims.demokritos.gr

(Received 12 March 2001; revised 9 July 2001)

The synthesis of clay composites modified with magnetite and Co ferrite magnetic nanoparticles is described. The synthetic method relies on the adsorption of colloidal magnetite or Co ferrite particles onto the external surfaces of a Na-saturated clay mineral to give magnetic clay composites that can be converted easily, through ion exchange reactions, to valuable clay derivatives, e.g. organoclays, which maintain the magnetic properties of the parent composite. The magnetic solids were characterized by XRD, EPR, Mössbauer, magnetic measurement and TEM techniques.

KEYWORDS: clay composites, magnetite, cobalt-ferrite, organoclays, XRD, EPR, Mössbauer, TEM