Abstract

HENRIQUEZ, Yurgenis et al. Synthesis and characterization of iron oxide nanoparticles supported on pvp and silica. Rev. Fac. Ing. UCV [online]. 2008, vol.23, n.4, pp.29-35. ISSN 0798-4065.

In this work we report the syntheses of iron oxide nanoparticles (ferrihydrite) stabilized on silica and polyvinylpyrrolidone (PVP), [Fe_xO_y/SiO₂] and [Fe_xO_y/PVP], from the hydrolysis of FeCl₃.6H₂O with NH₄OH. Both systems were characterized by ICP-OES, HRTEM, MET, Mössbauer and XPS. The mean particle size for the [Fe_xO_y/SiO₂] system was 1,7nm whereas for the [Fe_xO_y/PVP] it was between 2 and 3nm showing narrow size distribution.

Keywords : Nanostructured iron oxides; Iron oxides nanoparticles; Iron oxides; PVP.