石墨烯
材料科学
纳米结构
氧化物
纳米材料
磁性
吸收(声学)
纳米技术
电阻率和电导率
热解
化学工程
光电子学
复合材料
凝聚态物理
冶金
电气工程
物理
工程类
作者
Kun Zhang,Junjian Li,Fan Wu,Mengxiao Sun,Yilu Xia,Aming Xie
出处
期刊:ACS applied nano materials
[American Chemical Society]
日期:2018-12-19
卷期号:2 (1): 315-324
被引量:43
标识
DOI:10.1021/acsanm.8b01927
摘要
The rational design of specific nanostructures with desirable combination of electrical conductivity and magnetism is of significant importance in the field of electromagnetic absorption. To date, it is still difficult to uniformly coat magnetic composition on reduced graphene oxide (RGO) surface, especially through a metal–organic frameworks (MOFs) pyrolyzation strategy, just because of difficulty in even deposition of MOFs on graphene oxide (GO). Herein, we successfully deposit MOFs on GO to form sandwich MOFs/GO/MOFs through the addition of Fe3+ to MOFs precursor. Then, we adopt a temperature-controlled pyrolysis strategy to transform MOFs/GO/MOFs into sandwich CoFe2O4/RGO/CoFe2O4. The nanomaterial exhibits remarkable electromagnetic absorption (EMA) performance, where its maximum effective width reaches 7.08 GHz under 2.6 mm. It is thought that the synergy of electric loss, magnetic loss, and impedance match is ascribed to high-perforamnce EMA of this sandwich nanostructure.
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