Hydrothermal synthesis of superparamagnetic Fe3O4 nanoparticles with ionic liquids as stabilizer
2014; Elsevier BV; Volume: 62; Linguagem: Inglês
10.1016/j.materresbull.2014.11.022
ISSN1873-4227
AutoresXiaodi Liu, Hao Chen, Shanshan Liu, Liqun Ye, Yinping Li,
Tópico(s)Characterization and Applications of Magnetic Nanoparticles
ResumoSuperparamagnetic Fe3O4 nanoparticles have been successfully synthesized under hydrothermal condition with the assistant of ionic liquid 1-hexadecyl-3-methylimidazolium chloride ([C16mim]Cl). The structure and morphology of the sample have been investigated by X-ray diffraction (XRD), X-ray photoelectron spectra (XPS), transmission electron microscopy (TEM), and high-resolution TEM (HRTEM), and the results indicate that the as-synthesized inverse spinel Fe3O4 nanoparticles have an average diameter of about 10 nm and exhibit relatively good dispersity. More importantly, it is found that [C16mim]Cl acts as stabilizer for the Fe3O4 nanoparticles by adsorbing on the particles surfaces to prevent the agglomeration. In addition, the obtained superparamagnetic Fe3O4 nanoparticles have a saturation magnetization of 67.69 emu/g at 300 K.
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