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Journal of Nanomaterials
Volume 2015, Article ID 240948, 8 pages
http://dx.doi.org/10.1155/2015/240948
Research Article

Effect of the Surfactant on the Growth and Oxidation of Iron Nanoparticles

1Center for Applied Physics and Advanced Technology, National Autonomous University of Mexico, Boulevard Juriquilla 3001, 76230 Santiago de Querétaro, QRO, Mexico
2Metallurgical Research Institute, Michoacan University of Saint Nicholas of Hidalgo, Building U, University City, 58000 Morelia, MICH, Mexico

Received 1 May 2015; Revised 6 June 2015; Accepted 21 June 2015

Academic Editor: Nguyen D. Hoa

Copyright © 2015 Alvaro Ruíz-Baltazar et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Fe nanoparticles and branched nanostructures of iron oxide were synthesized by chemical reduction in aqueous phase. The mechanism of formation of iron oxides as a function of the amount of surfactant employed during the synthesis process was studied. Specifically Fe, Fe2O3, and Fe3O4 nanoparticles were obtained. The oxidation of Fe to Fe3O4 and finally to Fe2O3 was carried out by oxidative etching process, decreasing the amount of stabilizer agent. The structures obtained were characterized by high resolution (HRTEM) and scanning/transmission (STEM) electron microcopies, energy dispersive spectroscopy (EDS), and optical spectroscopy (UV-Vis and IR).