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Synthesis of Highly Dispersed Fe 3 O 4 Submicrometer Spheres in a One‐Pot Anion‐induced Solvothermal System
Author(s) -
Huang Peng,
Yin Ting,
Zhang Qian,
Gao Guo,
Shapter Joseph G.,
Shearer Cameron J.,
Zhang Chunlei,
Qi Wen,
Cui Daxiang
Publication year - 2017
Publication title -
journal of the chinese chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.329
H-Index - 45
eISSN - 2192-6549
pISSN - 0009-4536
DOI - 10.1002/jccs.201600833
Subject(s) - ostwald ripening , spheres , chemistry , ion , solubility , chemical engineering , solvothermal synthesis , nanotechnology , morphology (biology) , nuclear chemistry , crystallography , materials science , organic chemistry , engineering , physics , astronomy , biology , genetics
A facile, anion‐induced, one‐pot solvothermal method was successfully developed to prepare two kinds of highly dispersed magnetic Fe 3 O 4 submicrometer spheres at 200°C in 12 h. The diameters of the as‐prepared Fe 3 O 4 submicrometer spheres are ~500 and ~200 nm, respectively. With the guidance of OAc − ions, the size and morphology of the Fe 3 O 4 spheres could be well controlled. The saturation magnetization of the Fe 3 O 4 spheres was measured to be 84 and 74 emu/g, respectively. The assembly of tiny precursor nuclei into the Fe 3 O 4 spheres relies on Ostwald ripening. The synthesized Fe 3 O 4 submicrometer spheres show good magnetic response, good water solubility, and uniform size.