Iron oxide nanoparticles and VOx/Hexadecylamine nanotubes composite

Iron oxide nanoparticles and VOx/Hexadecylamine nanotubes composite

In this work, we present the synthesis and characterization of a hybrid nanocomposite constituted by iron oxide nanoparticles and vanadium oxide/Hexadecylamine (VOx/Hexa) nanotubes. Transmission Electron Microscopy (TEM) images show small particles (around 20 nm) in contact with the external wall of...

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Veröffentlicht in:Journal of magnetism and magnetic materials 2008-07, Vol.320 (14), p.e268-e271
Hauptverfasser: Saleta, M.E., Troiani, H.E., Ribeiro Guevara, S., Sánchez, R.D., Malta, M., Torresi, R.M.
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container_end_page e271
container_issue 14
container_start_page e268
container_title Journal of magnetism and magnetic materials
container_volume 320
creator Saleta, M.E.
Troiani, H.E.
Ribeiro Guevara, S.
Sánchez, R.D.
Malta, M.
Torresi, R.M.
description In this work, we present the synthesis and characterization of a hybrid nanocomposite constituted by iron oxide nanoparticles and vanadium oxide/Hexadecylamine (VOx/Hexa) nanotubes. Transmission Electron Microscopy (TEM) images show small particles (around 20 nm) in contact with the external wall of the multiwall tubes, which consist of alternate layers of VOx and Hexa. By Energy Dispersive Spectroscopy (EDS), we detected iron ions within the tube walls and we have also established that the nanoparticles are composed of segregated iron oxide. The samples were studied by Electron Paramagnetic Resonances (EPR) and dc-magnetization as a function of the magnetic field. The analysis of the magnetization and EPR data confirms that a fraction of the V atoms are in the V4+ electronic state and that the nanoparticles exhibit a superparamagnetic behavior. The percentage of V and Fe present in the nanocomposite was determined using Instrumental Neutron Activation Analysis (INAA).
doi_str_mv 10.1016/j.jmmm.2008.02.088
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title Iron oxide nanoparticles and VOx/Hexadecylamine nanotubes composite
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