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Ferrimagnetic Membranes for Separation of Paramagnetic and Diamagnetic Species

Published online by Cambridge University Press:  11 February 2011

Jihye Gwak ,
André Ayral ,
Vincent Rouessac ,
Louis Cot ,
Jean-Claude Grenier ,
Eue-Soon Jang  and
Jin-Ho Choy
Jihye Gwak
Affiliation:
Institut Européen des Membranes, UMR CNRS 5635, CC47, Université Montpellier II, Place Eugène Bataillon, 34095 Montpellier cedex 5, FRANCE
André Ayral
Affiliation:
Institut Européen des Membranes, UMR CNRS 5635, CC47, Université Montpellier II, Place Eugène Bataillon, 34095 Montpellier cedex 5, FRANCE
Vincent Rouessac
Affiliation:
Institut Européen des Membranes, UMR CNRS 5635, CC47, Université Montpellier II, Place Eugène Bataillon, 34095 Montpellier cedex 5, FRANCE
Louis Cot
Affiliation:
Institut Européen des Membranes, UMR CNRS 5635, CC47, Université Montpellier II, Place Eugène Bataillon, 34095 Montpellier cedex 5, FRANCE
Jean-Claude Grenier
Affiliation:
Institut de Chimie de la Matière Condensée de Bordeaux, UPR CNRS 9048, 87 avenue du Docteur Schweitzer, 33608 Pessac cedex, FRANCE
Eue-Soon Jang
Affiliation:
National Nanohybrid Materials Laboratory, School of Chemistry and Molecular Engineering, Seoul National University, Seoul, 151–742, KOREA
Jin-Ho Choy
Affiliation:
National Nanohybrid Materials Laboratory, School of Chemistry and Molecular Engineering, Seoul National University, Seoul, 151–742, KOREA
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Abstract

For using as separative membranes based on magnetic selectivity, nanoporous ferrimagnetic membranes of maghemite (γ-Fe2O3) and cobalt ferrite (Fe2CoO4) were prepared by the sol-gel route from ferrofluid colloidal solutions. Their magnetic properties were examined by superconductor quantum interference device (SQUID), and their structures and porous textures were studied by X-ray diffraction (XRD), scanning electron microscopy (SEM) and nitrogen adsorption-desorption analyses. O2-N2 adsorption and air separation experiments were carried out in order to evidence magnetic interactions in static and dynamic conditions, respectively. A small effect of an external magnetic field on the selectivity of these membranes was observed.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 752: Symposium AA – Membranes–Preparation, Properties and Applications , 2002 , AA10.4
Copyright
Copyright © Materials Research Society 2003

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References

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