Journal
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
Volume 323, Issue 22, Pages 2741-2747Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jmmm.2011.05.058
Keywords
Carbonaceous polysaccharide; Hydrothermal method; Solvothermal method; Magnetic microspheres; Caramel
Funding
- National Natural Science Foundation of China [50602024, 50972060, 11004106]
- NUST [2010ZDJH06]
- Nanjing University of Science and Technology [jit-x-201005]
- Natural Science Fund for Colleges and Universities in Jiangsu Province [10kjd430008]
- Jinling Institute of Technology [jit-b-201013]
- Outstanding Foundation of Nanjing University of Science and Technology
- Open Project of National Laboratory of Solid State Microstructures
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In this study, the preparation method for magnetic carbonaceous polysaccharide (Fe3O4@CP) microspheres was developed to increase the yield and encapsulation efficiency using a suitable quantity of NaOH as the catalysis. The optimum fabrication condition was identified through a series of experiment, under which the resulting Fe3O4@CP microspheres show good magnetic properties. The saturation magnetization was 60.629 emu/g and the magnetite content increased up to 81.7%. The shell of the microspheres was carbonaceous polysaccharide with rich hydroxyl and carbonyl groups located on the surface, and the mean size was less than 300 nm. The formation mechanism of Fe3O4@CP was also discussed in this paper. Crown Copyright (C) 2011 Published by Elsevier B.V. All rights reserved.
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