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

Rosas, Gerardo; Ruíz-Baltazar, Alvaro; Esparza, Rodrigo; Pérez, Ramiro

doi:10.1155/2015/240948

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

Author(s): Alvaro Ruíz-Baltazar , Rodrigo Esparza , Gerardo Rosas , Ramiro Pérez

Publication date Created: 2015

Publication date (Print): 2015

Journal: Journal of Nanomaterials

Publisher: Hindawi Limited

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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, Fe ₂O ₃, and Fe ₃O ₄nanoparticles were obtained. The oxidation of Fe to Fe ₃O ₄and finally to Fe ₂O ₃was 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).