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Template-free synthesis and characterization of monodisperse magnetite hollow nanoparticles through solvothermal
Dung The Nguyen1, Kyo-Seon Kim
1Department of Chemical Engineering, Kangwon National University, Chuncheon, Kangwon-Do 200-701, Korea.
Abstract:
Monodispersed Fe3O4 nanospheres with hollow interior structures were synthesized without any template. Those nanoparticles exhibited a ferromagnetic behavior with a high saturation magnetization of 81.0 emu g(-1). The hollow structure was formed based on the aggregation of many primary particles, followed by Oswald ripening process. Due to the energy difference between the outer and interior particles in the aggregates, the inner particles migrated to the outer shell. This resulted in the formation of the empty space inside nanostructures.
