Posgrado en Ciencias de la Ingeniería, Departamento de Ingeniería Química y Metalurgia, Universidad de Sonora, 83000, Mexico.
Posgrado en Nanotecnología, Departamento de Física, Universidad de Sonora, 83000, Mexico.
Ultrason Sonochem. 2018 Dec;49:303-309. doi: 10.1016/j.ultsonch.2018.08.017. Epub 2018 Aug 17.
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.
在这里，我们展示了一种简单的方法，用于通过有机声化学合成由油酸表面修饰稳定的稳定的碳化铁/氧化铁核壳纳米粒子（ICIONPs）。这种稳健的合成路线基于使用低强度超声浴的有机金属前体（如 Fe(CO)）在辛醇中的声化学反应。所获得的纳米粒子的直径尺寸约为 6.38nm±1.34，水动力直径约为 25nm，估计多分散性为 0.27。使用高分辨率透射电子显微镜（HR-TEM）和 X 射线光电子能谱（XPS）表征工具证实了纳米粒子的核壳结构，其中发现了由碳化铁（FeC）组成的核和磁铁矿（γ-FeO）壳。整体纳米颗粒在 4K 时通过 SQUID 呈现出铁磁性。由于这些特性，ICIONPs 可以由于其来自氧化铁和碳化铁相的特性而在各种应用中用作治疗诊断剂。
