期刊
JOURNAL OF NANOPARTICLE RESEARCH
卷 15, 期 3, 页码 -出版社
SPRINGER
DOI: 10.1007/s11051-013-1472-1
关键词
Fe3O4; Graphene; Hybrids; Magnetic; Electromagnetic
资金
- National Basic Research Program of China (973 Program) [2012CB933104]
- National Natural Science Foundation of China [11274145]
- Fundamental Research Funds for Central Universities from the Ministry of Education of the People's Republic of China [860521]
Fe3O4-graphene hybrid materials have been fabricated by a simple polyol method, and their morphology, chemistry and crystal structure have been characterized at the nanoscale. It is found that each Fe3O4 nanoparticles decorated on the graphene has a polycrystalline fcc spinel structure and a uniform chemical phase. Raman spectroscopy, Fourier transform infrared spectroscopy, thermogravimetry/differential thermal analysis, X-ray diffraction, and transmission electron microscopy suggest that Fe3O4 nanoparticles are chemically bonded to the graphene sheets. Electromagnetic wave absorption shows that the material has a reflection loss exceeding -10 dB in 7.5-18 GHz for an absorber thickness of 1.48-3 mm, accompanying a maximum reflection loss value of -30.1 dB at a 1.48-mm matching thickness and 17.2-GHz matching frequency. Theoretic analysis shows that the electromagnetic wave absorption behavior obeys quarter-wave principles. The results suggest that the magnetic Fe3O4-graphene hybrids are good candidates for the use as a light-weight electromagnetic wave-absorbing material in X-and K-u-bands.
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