Electromagnetic absorption properties of graphene/Fe nanocomposites

被引：101
作者：
Chen, Yujin [1 ]
Lei, Zhenyu [1 ]
Wu, Hongyu [1 ]
Zhu, Chunling [2 ]
Gao, Peng [2 ]
Ouyang, Qiuyun [1 ]
Qi, Li-Hong [1 ]
Qin, Wei [3 ]
机构：
[1] Harbin Engn Univ, Coll Sci, Key Lab Infiber Integrated Opt, Minist Educ China, Harbin 150001, Peoples R China
[2] Harbin Engn Univ, Coll Mat Sci & Chem Engn, Harbin 150001, Peoples R China
[3] Harbin Inst Technol, Sch Mat Sci & Engn, Harbin 150001, Peoples R China
来源：
MATERIALS RESEARCH BULLETIN | 2013年 / 48卷 / 09期
基金：
中国国家自然科学基金;
关键词：
Composites; Interfaces; Chemical synthesis; Dielectric properties; Magnetic properties; CORE/SHELL NANORODS SYNTHESIS; MICROWAVE-ABSORPTION; FE3O4; NANOPARTICLES; CARBON NANOTUBES; RESONANCE;
D O I：
10.1016/j.materresbull.2013.05.020
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Graphene (G)/Fe nanocomposites with ferromagnetic properties at room temperature were fabricated by a facile and green method. Transmission electron microscope (TEM) and atomic force microscopy (AFM) amylases reveal that the alpha-Fe nanoparticles with a diameter of only about 10 nm were uniformly dispersed over the surface of the graphene sheets. Compared with other magnetic materials and the graphene, the nanocomposites exhibited significantly enhanced electromagnetic absorption properties. The maximum reflection loss to electromagnetic wave was up to-31.5 dB at a frequency of 14.2 GHz for G/Fe nanocomposites with a thickness of 2.5 mm. Importantly, the addition of the nanocomposites is only about 20 wt.% in the matrix. The enhanced mechanism is discussed and it is related to high surface areas of G/Fe nanocomposites, interfacial polarizations between graphene and iron, synergetic effect and efficient dispersity of magnetic NPs. (C) 2013 Elsevier Ltd. All rights reserved.
引用
收藏
页码：3362 / 3366
页数：5
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