Low intensity sonosynthesis of iron carbide@iron oxide core-shell nanoparticles.

Author(s) Argüelles-Pesqueira, A.I.; Diéguez-Armenta, N.M.; Bobadilla-Valencia, A.K.; Nataraj, S.K.; Rosas-Durazo, A.; Esquivel, R.; Alvarez-Ramos, M.E.; Escudero, R.; Guerrero-German, P.; Lucero-Acuña, J.A.; Zavala-Rivera, P.
Journal Ultrason Sonochem
Date Published 2018 Dec

Here we demonstrate a simple method for the organic sonosynthesis of stable Iron Carbide@Iron Oxide core-shell nanoparticles (ICIONPs) stabilized by oleic acid surface modification. This robust synthesis route is based on the sonochemistry reaction of organometallic precursor like Fe(CO) in octanol using low intensity ultrasonic bath. As obtained, nanoparticles diameter sizes were measured around 6.38 nm ± 1.34 with a hydrodynamic diameter around 25 nm and an estimated polydispersity of 0.27. Core-Shell structure of nanoparticles was confirmed using HR-TEM and XPS characterization tools in which a core made up of iron carbide (FeC) and a shell of magnetite (γ-FeO) was found. The overall nanoparticle presented ferromagnetic behavior at 4 K by SQUID. With these characteristics, the ICIONPs can be potentially used in various applications such as theranostic agent due to their properties obtained from the iron oxides and iron carbide phases.

DOI 10.1016/j.ultsonch.2018.08.017
ISSN 1873-2828
Citation Argüelles-Pesqueira AI, Diéguez-Armenta NM, Bobadilla-Valencia AK, Nataraj SK, Rosas-Durazo A, Esquivel R, et al. Low intensity sonosynthesis of iron carbide@iron oxide core-shell nanoparticles. Ultrason Sonochem. 2018;49:303-309.

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