Solvothermal synthesis of CoFe2O4 hollow spheres

• Published in: Journal of materials science Vol. 42; no. 24; pp. 10113 - 10117
• Main Authors: Liu, Qi, Lai, Lifang, Fu, Xiujuan, Zhu, Fangping, Sun, Jianhua, Rong, Hongren, He, Mingyang, Chen, Qun, Xu, Zheng
• Format: Journal Article
• Language: English
• Published: Heidelberg Springer 01-12-2007; Springer Nature B.V
• Subjects: Chemical synthesis methods; Cobalt ferrites; Cross-disciplinary physics: materials science; rheology; Electron diffraction; Ethylene glycol; Exact sciences and technology; Ferric chloride; Iron chlorides; Magnetic properties; Materials science; Methods of nanofabrication; Microscopy; Nanoparticles; Oleic acid; Physics; Polyethylene glycol; Scanning electron microscopy; Transmission electron microscopy; X ray powder diffraction; X-ray diffraction; Scanning electron microscopy; Inorganic compounds; Solvothermal synthesis; Cobalt oxides; Oxides; XRD; SAED; Nanostructures; Spheres; Experimental study; High-resolution methods; Hollow shape; Transmission electron microscopy; Chemical preparation; Iron oxides; Formation mechanism; Growth from solution; Magnetic properties
• ISSN: 0022-2461; 1573-4803
• DOI: 10.1007/s10853-007-2075-y

Hollow CoFe2O4 spheres consisted of CoFe2O4 nanoparticles were synthesized by a facile solvothermal treatment of an ethylene glycol solution of FeCl3 · 6H2O, CoCl2 · 6H2O, and NaAc at 200 °C in the presence of polyethylene glycol and oleic acid. The products were characterized by powder X-ray diffraction, transmission electron microscopy, selected area electron diffraction, high-resolution transmission microscopy, scanning electron microscopy. The magnetic properties were evaluated using a vibrating sample magnetometer. The probable mechanism of the formation of Hollow CoFe2O4 spheres was discussed.