Fibroporous polytetrafluoroethylene modified with iron nanoparticles: Structure and electronic and magnetic properties

A method for synthesizing iron-containing nanocomposite based on fibroporous polytetrafluoroethylene (PTFE) is described. Fibroporous PTFE obtained under the radiation of a CO 2 laser on block PTFE is modified in supercritical carbon dioxide (sc CO 2 ) to form micro- and nanoporous structures. Porou...

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Bibliographic Details
Published in:Russian Journal of Physical Chemistry A 2013-06, Vol.87 (6), p.985-991
Main Authors: Vasil’kov, A. Yu, Suzdalev, I. P., Maksimov, Yu. V., Nikitin, L. N., Naumkin, A. V., Abramchuk, S. S., Tolstopyatov, E. M., Grakovich, P. N.
Format: Article
Language:English
Subjects:
Chemistry
Chemistry and Materials Science
Physical Chemistry
Physical Chemistry of Nanoclusters and Nanomaterials
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Summary:A method for synthesizing iron-containing nanocomposite based on fibroporous polytetrafluoroethylene (PTFE) is described. Fibroporous PTFE obtained under the radiation of a CO 2 laser on block PTFE is modified in supercritical carbon dioxide (sc CO 2 ) to form micro- and nanoporous structures. Porous fluoropolymer is treated with a solution of bis (toluene)iron(0) obtained by metal-vapor synthesis (MVS). The composition and structure of iron-containing fluoropolymer is studied by transmission electron microscopy and X-ray photoelectron and Mössbauer spectroscopy. Fe nanoparticles with an average size of 9 nm, consisting of ∼30% FeO and ∼70% Fe 3+ , are registered in the sample. Fe 0 nanoparticles are stabilized in fluoropolymer pores and are coated with nanoparticles of nonstoichiometric iron oxides that have superparamagnetic properties.
ISSN:0036-0244
1531-863X
DOI:10.1134/S0036024413050294