Journal
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
Volume 321, Issue 8, Pages 1025-1028Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jmmm.2008.10.007
Keywords
Fe3O4; Biosurfactant; Mesoporous structure; Magnetic materials
Funding
- Natural Science Foundation of China [B2052140, B5050470]
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Magnetic Fe3O4 materials with mesoporous structure are synthesized by co-precipitation method using yeast cells as a template. The X-ray diffraction (XRD) pattern indicates that the as-synthesized mesoporous hybrid Fe3O4 is well crystallized. The Barrett-Joyner-Halenda (BJH) models reveal the existence of mesostructure in the dried sample which has a specific surface area of 96.31 m(2)/g and a pore size distribution of 8-14 nm. Transmission electron microscopy (TEM) measurements confirm the wormhole-like structure of the resulting samples. The composition and chemical bonds of the Fe3O4/cells composites are studied by Fourier transform infrared (FT-IR) spectroscopy. Preliminary magnetic properties of the mesoporous hybrid Fe3O4 are characterized by a vibrating sample magnetometer (VSM). The magnetic Fe3O4/cells composites with mesoporous structure have potential applications in biomedical areas, such as drug delivery. Crown Copyright (C) 2008 Published by Elsevier B.V. All rights reserved.
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