Acta Chimica Sinica ›› 2011, Vol. 69 ›› Issue (09): 1081-1086. Previous Articles     Next Articles

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Fe3O4@Gd2O3:Eu3+磁光双功能复合粒子的制备与表征

刘桂霞*,彭红霞,范水高,董相廷,王进贤   

  1. (长春理工大学化学与环境工程学院 长春 130022)
  • 收稿日期:2010-11-10 修回日期:2010-12-08 出版日期:2011-05-14 发布日期:2011-01-03
  • 通讯作者: 刘桂霞 E-mail:liuguixia22@yahoo.com.cn
  • 基金资助:

    国家自然科学基金;吉林省科技发展计划项目

Preparation and Characterization of Fe3O4@Gd2O3:Eu3+ Bi-functional Magnetic and Luminescent Composite Particles

LIU Gui-Xia, PENG Hong-Xia, FAN Shui-Gao, DONG Xiang-Ting, WANG Jin-Xian   

  1. (School of Chemistry and Environmental Engineering, Changchun University of Science and Technology, Changchun 130022)
  • Received:2010-11-10 Revised:2010-12-08 Online:2011-05-14 Published:2011-01-03

Fe3O4@Gd2O3:Eu3+ magnetic and luminescent bi-functional composite particles with core-shell structure were fabricated via a facile hydrothermal method, the structure and properties were characterized. XRD patterns show that the cubic phase Gd2O3:Eu3+ nanocrystals are coated on the surface of Fe3O4 particles after calcined at 700 ℃. TEM images indicate that the obtained composites have obvious core-shell structure and perfect spherical morphology, the diameter of the Fe3O4 core is 200~300 nm and the size of the Fe3O4@Gd2O3:Eu3+ composites is about 225~350 nm, the shell thickness of Gd2O3:Eu3+ ranges from 25 to 50 nm. Compared with Fe3O4 core, the size of the coated particles is larger and the surface becomes smoother. Electron diffraction pattern indicates that the sample is polycrystalline. The photoluminescence spectra and the magnetic properties indicate that the core-shell structrual composites have red emitting light and magnetism, which would be potentially applied in biology and medicine fields.

Key words: method, Fe3O4, magnetic and luminescent bi-function, core-shell structure