Journal
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
Volume 10, Issue 10, Pages 6400-6406Publisher
AMER SCIENTIFIC PUBLISHERS
DOI: 10.1166/jnn.2010.2529
Keywords
Magnetite; Hollow Spheres; Polyhedral Spheres; Lamer Model; Magnetic Properties
Categories
Funding
- National Natural Science Foundation of China [20871083]
- Innovative Plan Foundation of Changchun Institute of Application Chemistry, CAS, China [CX07QZJC-29]
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We first demonstrate a simple one-pot method to synthesis uniform Fe3O4 hollow microspheres in the presence of PEG in ethylene glycol by using urea to control their morphologies. The interior cavity of the hollow spheres can be tunable by reaction time. The Lamer model was used to explain the formation of magnetite hollow spherical structures based on the experimental observations. The obtained hollow Fe3O4 microspheres showing superparamagnetism with a high saturation magnetization of ca. 86.4 emu/g, and also had an enrichment surface of -OH groups, which will be favorable to the further modification with other biomedical molecules.
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