期刊
ACS APPLIED MATERIALS & INTERFACES
卷 4, 期 12, 页码 6436-6442出版社
AMER CHEMICAL SOC
DOI: 10.1021/am3021697
关键词
graphene; Fe3O4; Fe; ZnO; quaternary nanocomposites; electromagnetic absorption
资金
- National Natural Science Foundation of China [51072038, 51272050, 61205113, 51172275, 21001035]
- Program for New Century Excellent Talents in University [NECT-10-0049]
- Outstanding Youth Foundation of Heilongjiang Province [JC201008]
This paper presents for the first time a successful synthesis of quaternary nanocomposites consisting of graphene, Fe3O4@Fe core/shell nanopariticles, and ZnO nanoparticles. Transmission electron microscopy measurements show that the diameter of the Fe3O4@Fe core/shell nanoparitcles is about 18 nm, the Fe3O4 shell's thickness is about 5 nm, and the diameter of ZnO nanoparticles is in range of 2-10 nm. The measured electromagnetic parameters show that the absorption bandwidth with reflection loss less than 20 dB is up to 7.3 GHz, and in the band range more than 99% of electromagnetic wave energy is attenuated. Moreover, the addition amount of the nanocomposites in the matrix is only 20 wt %. Therefore, the excellent electromagnetic absorption properties with lightweight and wide absorption frequency band are realized by the nanocomposites.
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