Journal
JOURNAL OF THE CHINESE CHEMICAL SOCIETY
Volume 64, Issue 2, Pages 217-223Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/jccs.201600833
Keywords
Fe3O4; Submicrometer spheres; Solvothermal; Ostwald ripening
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Funding
- National Natural Science Foundation of China [81671737, 81225010]
- 863 High-Tech project of China [2014AA020701]
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A facile, anion-induced, one-pot solvothermal method was successfully developed to prepare two kinds of highly dispersed magnetic Fe3O4 submicrometer spheres at 200 degrees C in 12h. The diameters of the as-prepared Fe3O4 submicrometer spheres are similar to 500 and similar to 200nm, respectively. With the guidance of OAc (-) ions, the size and morphology of the Fe3O4 spheres could be well controlled. The saturation magnetization of the Fe3O4 spheres was measured to be 84 and 74emu/g, respectively. The assembly of tiny precursor nuclei into the Fe3O4 spheres relies on Ostwald ripening. The synthesized Fe3O4 submicrometer spheres show good magnetic response, good water solubility, and uniform size.
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