Synthesis and electromagnetic, microwave absorbing properties of polyaniline/graphene oxide/Fe3O4 nanocomposites
Synthesis and electromagnetic, microwave absorbing properties of polyaniline/graphene oxide/Fe3O4 nanocomposites
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DOI：
10.1039/c4ra12186d
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发表时间：
2015-02
期刊：
影响因子：
3.9
通讯作者：
J. Zhao;Junpin Lin;Jun-ping Xiao;Huili Fan
中科院分区：
文献类型：
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作者：
J. Zhao;Junpin Lin;Jun-ping Xiao;Huili Fan
用一种简单的方法合成了聚苯胺/氧化石墨烯/Fe3O4(PANI/GO/Fe3O4)三元复合材料，并对其电磁吸收性能进行了研究。用傅立叶变换红外光谱、X射线衍射、拉曼光谱、X射线光电子能谱和透射电子显微镜对复合材料的结构进行了表征。结果表明，PANI/GO/Fe3O4的最大反射损耗在7.5Ghz处达到−53.5dB，超过−10dB2.8 GHz，吸收层厚度为3.91 mm。电磁参数表明纳米复合材料的电磁吸收性能增强，这归因于更好的阻抗匹配。在此基础上，提出了一种解释阻抗匹配的电磁互补理论。
Ternary composites of polyaniline/graphene oxide/Fe3O4 (PANI/GO/Fe3O4) were synthesized by a simple method and the electromagnetic absorption properties of the composites were investigated in the paper. The structures of the composites were characterized with Fourier-transform infrared spectroscopy, X-ray diffraction, Raman spectroscopy, X-ray photoelectron spectroscopy, and transmission electron microscopy. It can be found that the maximum reflection loss of PANI/GO/Fe3O4 can reach −53.5 dB at 7.5 GHz, and the bandwidth exceeds −10 dB is 2.8 GHz with absorber thickness of 3.91 mm. The electromagnetic parameters indicated enhanced electromagnetic absorption properties of the nanocomposites, which was attributed to the better impedance matching. On the basis of the above characterization, an electromagnetic complementary theory was proposed to explain the impedance matching.