期刊
RSC ADVANCES
卷 6, 期 21, 页码 16952-16962出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5ra22254k
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资金
- National Natural Science Foundation of China (NSFC) [51021002, 51172050, 51102063, 51372052]
- Natural Scientific Research Innovation Foundation in Harbin Institute of Technology [HIT. NSRIF. 2011109, HIT. NSRIF. 2010121, MH20120757]
- Fundamental Research Funds for the Central Universities [HIT. ICRST. 2010009]
Fe3O4/graphene composites were synthesized as an advanced electromagnetic wave absorption material by a solvothermal method in a system of ethylene glycol. The Fe3O4 nanoparticles were homogeneously anchored on the graphene sheets and the structures of the nanoparticles could be experimentally controlled from ring-like spheres, flower-like spheres to solid spheres by changing the concentration of the oxide graphene. Microwave absorption tests demonstrated that the structures of the nanoparticles had a positive influence on the microwave absorption properties. Especially, for the Fe3O4/graphene composite with a flower-like structure, the minimum reflection loss value (RL) could reach -53.2 dB and the bandwidth of RL less than 10 dB (90% absorption) ranged from 8.1 to 16 GHz at a thickness of 2.5 mm, which is among the best-reported performances of Fe3O4/graphene materials, showing a huge potential to be used as a candidate for microwave absorbing materials.
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