Preparation and Characterization of TiO2 Coated Fe Nanofibers for Electromagnetic Wave Absorber

Title
Preparation and Characterization of TiO2 Coated Fe Nanofibers for Electromagnetic Wave Absorber
Author(s)
좌용호[좌용호]장대환[장대환]송한복[송한복]이건재[이건재]이영인[이영인]오승탁[오승탁]이상관[이상관]김기현
Keywords
ABSORPTION PROPERTIES; IRON-OXIDE; NANOCOMPOSITES; REDUCTION; HYDROGEN; NANOPARTICLES
Issue Date
201101
Publisher
AMER SCIENTIFIC PUBLISHERS
Citation
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, v.11, no.1, pp.763 - 767
Abstract
Recently, electromagnetic interference (EMI) and electromagnetic compatibility (EMC) have become serious problems due to the growth of electronic device and next generation telecommunication. It is necessary to develop new electromagnetic wave absorbing material to overcome the limitation of electromagnetic wave shielding materials. The EMI attenuation is normally related to magnetic loss and dielectric loss. Therefore, magnetic material coating dielectric materials are required in this reason. In this study, TiO2 coated Fe nanofibers were prepared to improve their properties for electromagnetic wave absorption. Poly(vinylpyrrolidone) (PVP) and Iron (III) nitrate nonahydrate (Fe(NO3)(3)center dot 9H(2)O) were used as starting materials for the synthesis of Fe oxide nanofibers. Fe oxide nanofibers were prepared by electrospinning in an electric field and heat treatment. TiO2 layer was coated on the surface of Fe oxide nanofibers using sol-gel process. After the reduction of TiO2 coated Fe oxide nanofibers, Fe nanofibers with a TiO2 coating layer of about 10 nm were successfully obtained. The morphology and structure of fibers were characterized by SEM, TEM, and XRD. In addition, the absorption properties of TiO2 coated Fe nanofibers were measured by network analyzer.
URI
http://hdl.handle.net/YU.REPOSITORY/25755http://dx.doi.org/10.1166/jnn.2011.3240
ISSN
1533-4880
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이과대학 > 물리학과 > Articles
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