Coupling Hollow Fe3O4–Fe Nanoparticles with Graphene Sheets for High-Performance Electromagnetic Wave Absorbing Material

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• 作者：Bin Qu ; Chunling Zhu ; Chunyan Li ; Xitian Zhang ; Yujin Chen
• 刊名：ACS Applied Materials & Interfaces
• 出版年：2016
• 出版时间：February 17, 2016
• 年：2016
• 卷：8
• 期：6
• 页码：3730-3735
• 全文大小：410K
• ISSN：1944-8252

文摘

We developed a strategy for coupling hollow Fe₃O₄–Fe nanoparticles with graphene sheets for high-performance electromagnetic wave absorbing material. The hollow Fe₃O₄–Fe nanoparticles with average diameter and shell thickness of 20 and 8 nm, respectively, were uniformly anchored on the graphene sheets without obvious aggregation. The minimal reflection loss R_L values of the composite could reach −30 dB at the absorber thickness ranging from 2.0 to 5.0 mm, greatly superior to the solid Fe₃O₄–Fe/G composite and most magnetic EM wave absorbing materials recently reported. Moreover, the addition amount of the composite into paraffin matrix was only 18 wt %.