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J Colloid Interface Sci ; 337(1): 272-7, 2009 Sep 01.
Artigo em Inglês | MEDLINE | ID: mdl-19523647

RESUMO

Multiwalled carbon nanotubes (MWNTs) have been successfully decorated with magnetic CoO and NiO nanoparticles via the interaction of M(NH(3))x(2+) (M = Co,Ni) ions and the carboxyl groups on the surface of acid-treated MWNTs. The obtained composites were characterized by X-ray diffraction, scanning electron and transmission electron microscopies. The soaking time plays an important role in the preparation of the composites. Magnetic measurements indicate that both the CoO/MWNT and NiO/MWNT composites present superparamagnetic behavior which can be attributed to the small size of CoO and NiO nanoparticles.

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