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Description
Octapod-shaped CoFe$_2$O$_4$ nanoparticles represent an interesting and promising material in the field of magnetic properties and their applications. These nanoparticles have a unique octapod-shaped structure and exhibit exceptional magnetic properties that predispose them for use as sensitive detection objects in magnetic devices.
The sensitivity and efficiency of CoFe$_2$O$_4$ nanoparticles as detectors can be greatly enhanced due to the possibility of modifying their shape and structure. This property allows fine-tuning of their magnetic characteristics, which may be prospective, for example, in magnetic particle hyperthermia in the application of alternating magnetic fields.
Moreover, CoFe$_2$O$_4$ nanoparticles will also find applications in biomedical environments, especially as contrast agents in magnetic resonance imaging (MRI). Their ability to be detected by magnetic devices with high sensitivity and precision makes them ideal candidates for improved imaging diagnostic methods and more accurate localization of pathological processes in the human body. Overall, the research and use of CoFe$_2$O$_4$ nanoparticles present an interesting example of synergistic interaction between materials science and biomedicine, which promises to expand their applications in the fields of sensing, diagnostics, and therapeutics.
The octapod CoFe$_2$O$_4$ nanoparticles were prepared via Thermal decomposition of iron(III) acetylacetonate and cobalt(II) acetylacetonate in the presence of sodium oleate and oleic acid. Transmission electron microscopy (TEM) images confirmed that the as-prepared product consists of four-armed star-like cobalt ferrite particles. Prepared nanoparticles had size 15 nm and their saturation magnetisation is around 80 emu/g. As the as-prepared nanoparticles were unsuitable for biomedical applications, we transferred the nanoparticles to aqueous media using the ligand exchange.
References
[1] Y. Eom, M. Abbas, H. Noh, and C. Kim, “Morphology-controlled synthesis of highly crystalline Fe3O4 and CoFe2O4 nanoparticles using a facile thermal decomposition method,” RSC Advances, vol. 6, no. 19. Royal Society of Chemistry (RSC), pp. 15861–15867, 2016. doi: 10.1039/c5ra27649g.
[2] N. Abimathi, H. Harshene, and B. Vidhya, “Synthesis and characterization of CoFe2O4 nanoparticles with its medical application,” Materials Today: Proceedings, vol. 62. Elsevier BV, pp. 2315–2319, 2022. doi: 10.1016/j.matpr.2022.04.101.
