Wang, Li-Li and Jiang, Ji-Sen (2009) Preparation of Fe3O4 Spherical Nanoporous Particles Facilitated by Polyethylene Glycol 4000. Nanoscale Research Letters, 4 (12). pp. 1439-1446. ISSN 1931-7573 (Print) 1556-276X (Online)
Official URL: http://www.springerlink.com/content/124715n633v254...
Much interest has been attracted to the magnetic materials with porous structure because of their unique properties and potential applications. In this report, Fe3O4 nanoporous particles assembled from small Fe3O4 nanoparticles have been prepared by thermal decomposition of iron acetylacetonate in the presence of polyethylene glycol 4000. The size of the spherical nanoporous particles is 100–200 nm. Surface area measurement shows that these Fe3O4 nanoporous particles have a high surface area of 87.5 m2/g. Magnetization measurement and Mössbauer spectrum indicate that these particles are nearly superparamagnetic at room temperature. It is found that the morphology of the products is greatly influenced by polyethylene glycol concentration and the polymerization degree of polyethylene glycol. Polyethylene glycol molecules are believed to facilitate the formation of the spherical assembly.
|Subjects:||Physical Science > Nanophysics|
Physical Science > Nano objects
Material Science > Nanochemistry
Material Science > Nanostructured materials
|Divisions:||Faculty of Engineering, Science and Mathematics > School of Physics|
Faculty of Engineering, Science and Mathematics > School of Chemistry
|Deposited On:||05 Jun 2010 09:10|
|Last Modified:||05 Jun 2010 09:10|
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