A Study on Synthesis and Properties of Fe₃O₄ Nanoparticles
by Solvothermal Method¹

Huang Yan^a, Zhang Liping^a, Huan Weiwei^a, Liang Xiaojuan^b, Liu Xiangnong^c, and Yang
Yuxiang^a,*

^aDepartment of Chemistry, East China University of Science and Technology, 200237 P. R. China

*e-mail: yuxyang@online.sh.cn

^bDalian Maritime University, Dalian, 116021 P. R. China

^cAnalysis Test Center, Yangzhou University, Yangzhou, 225009 P. R. China

Received June 30, 2009

Abstract—Magnetic nanoparticles (Fe₃O₄) were synthesized by the solvothermal method using FeCl₃ 6H₂O and
ethylene glycol as a reactant. Powder X-ray diffraction, FT-IR, TEM, SEM, and VSM were used to characterize the
magnetic particles. The reacting factors, such as reacting time, the concentration of iron source and surfactant, espe-
cially the effect of NaAc 3H₂O, were studied. The results indicated that NaAc 3H₂O plays the role not only as a
dispersant but also a structure-directing agent. The synthesized Fe₃O₄ particles showed excellent magnetic property,
which made them have potential for application in magnetic nanodevices and biomedicine.

Key words: Fe₃O₄ nanoparticles, solvothermal, magnetic properties

DOI: 10.1134/S1087659610030090

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