Cobalt Ferrite Nanorods Synthesized with a Facile “Green” Method in a Magnetic Field
Kwiatkowski A.L. Shvets P.V. Timchenko I.S. Kessel D.E. Shipkova E.D. Maslakov K.I. Kuznetsov I.A. Muravlev D.A. Philippova O.E. Shibaev A.V.
March 2024Multidisciplinary Digital Publishing Institute (MDPI)
Nanomaterials
2024#14Issue 6
We report a new facile method for the synthesis of prolate cobalt ferrite nanoparticles without additional stabilizers, which involves a co-precipitation reaction of Fe3+ and Co2+ ions in a static magnetic field. The magnetic field is demonstrated to be a key factor for the 1D growth of cobalt ferrite nanocrystals in the synthesis. Transmission electron microscopy (TEM), X-ray diffraction (XRD), and Raman spectroscopy are applied to characterize the morphology and structure of the obtained nanoparticles. According to TEM, they represent nanorods with a mean length of 25 nm and a diameter of 3.4 nm that have a monocrystalline structure with characteristic plane spacing of 2.9 Å. XRD and Raman spectroscopy confirm the spinel CoFe2O4 structure of the nanorods. After aging, the synthesized nanorods exhibit maximum saturation magnetization and coercivity equal to 30 emu/g and 0.3 kOe, respectively. Thus, the suggested method is a simple and “green” way to prepare CoFe2O4 nanorods with high aspect ratios and pronounced magnetic properties, which are important for various practical applications, including biomedicine, energy storage, and the preparation of anisotropic magnetic nanocomposites.
anisotropy , co-precipitation , cobalt ferrite , crystal growth , magnetic field , nanorods
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Physics Department, Lomonosov Moscow State University, Leninskije Gory 1-2, Moscow, 119991, Russian Federation
REC “Functional Nanomaterials”, Immanuel Kant Baltic Federal University, Aleksandra Nevskogo St., 14, Kaliningrad, 236041, Russian Federation
Chemistry Department, Lomonosov Moscow State University, Leninskije Gory 1-3, Moscow, 119991, Russian Federation
Chemistry Department, Karaganda E.A. Buketov University, University Street 28, Karaganda, 100028, Kazakhstan
Physics Department
REC “Functional Nanomaterials”
Chemistry Department
Chemistry Department
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