蛋壳膜
反射损耗
纳米复合材料
材料科学
涂层
膜
微波食品加热
纳米颗粒
多孔性
散射
衰减
电磁辐射
复合材料
吸收(声学)
复合数
光电子学
纳米技术
化学
光学
计算机科学
电信
物理
生物化学
作者
Li Huang,Jianjun Li,Zhijiang Wang,Yibin Li,Xiaodong He,Ye Yuan
出处
期刊:Carbon
[Elsevier]
日期:2019-03-01
卷期号:143: 507-516
被引量:313
标识
DOI:10.1016/j.carbon.2018.11.042
摘要
As the rapid development of electronic devices and wireless communication tools, it is urgent to design and fabricate low-cost, lightweight and effective electromagnetic absorption materials to solve electromagnetic interference of electromagnetic wave. Herein, a feasible and low-cost method has been developed to synthesize an effective carbon-based microwave absorber. The hierarchically porous structures derived from eggshell membrane (ESM) and the anchored CoFe2O4 nanoparticles (NPs) helped the C/CoFe2O4 nanocomposites perform a favor for strengthening electromagnetic absorption capability. The porous [email protected]2O4 nanocomposites achieves the maximum reflection loss value of −49.6 dB at 9.2 GHz with 30% loading in the paraffin matrix. Detailed investigation reveals that the porous structure as well as strong synergetic effect between porous carbon matrix and magnetic nanoparticles can effectively improve the impedance matching condition and attenuation ability of the nanocomposites, leading to a high microwave absorption performance. In addition, the simulation results indicate that the radar cross section (RCS) of a strong metal scattering sources at different degrees can be significantly reduced after coating with [email protected]2O4 nanocomposites. These achievements light the way to prepare low-cost and sustainable microwave absorbents with excellent electromagnetic wave absorbing performances, utilizing the wasted eggshell membrane biomasses as precursors.
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