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Magnetite/graphene oxide/Prussian blue composite with robust effectiveness for electromagnetic interference shielding
Ceramics International ( IF 5.1 ) Pub Date : 2021-09-27 , DOI: 10.1016/j.ceramint.2021.09.248
Sadia Ata 1 , Syed A. Bukhari 1 , Ismat Bibi 2 , Ijaz-ul Mohsin 3 , Muhammad Shoaib 1 , Farzana Majid 4 , Munawar Iqbal 5 , Fwzah H. Alshammari 6 , Nada Alfryyan 7 , Norah Alwadai 7
Affiliation  

Considering the promising efficiency of composites, in the current study, a graphene oxide (GO)-magnetite-Prussian blue (PB) composite material was prepared. The composite exhibited electrical conductivity, magnetic permeability, and permittivity nature, and was evaluated using electromagnetic interference (EMI) shielding studies. GO was developed by the Hummer's method, ferrite (Fe3O4) was incorporated by the sol-gel method, and PB was introduced in the mixture by an in-situ process. The fabricated samples were studied by X-ray diffraction, Raman Spectroscopy, Fourier-transform infrared spectroscopy along with EMI shielding efficiency (SE) evaluation. The SE of −71.66 dB of reflection losses was measured at a frequency of 1.5 MHz. The GO/Fe3O4/PB composite provided the best results for the detection in the 1–18 MHz frequency range because of its excellent electric and magnetic properties. The obtained results demonstrated that the GO/Fe3O4/PB composite has promising potential applications in EMI shielding.



中文翻译:

磁铁矿/氧化石墨烯/普鲁士蓝复合材料具有强大的电磁干扰屏蔽效果

考虑到复合材料的有前途的效率,在目前的研究中,制备了氧化石墨烯(GO)-磁铁矿-普鲁士蓝(PB)复合材料。该复合材料具有导电性、磁导率和介电常数特性,并使用电磁干扰 (EMI) 屏蔽研究进行评估。GO 是通过 Hummer 方法开发的,铁氧体 (Fe 3 O 4 ) 是通过溶胶-凝胶法掺入的,PB 通过原位工艺引入混合物中。通过 X 射线衍射、拉曼光谱、傅立叶变换红外光谱以及 EMI 屏蔽效率 (SE) 评估研究了制造的样品。-71.66 dB 的反射损耗 SE 在 1.5 MHz 的频率下测量。GO/Fe 3O 4 /PB 复合材料由于其优异的电学和磁学特性,为1-18 MHz 频率范围内的检测提供了最佳结果。所得结果表明GO/Fe 3 O 4 /PB复合材料在EMI屏蔽方面具有广阔的应用前景。

更新日期:2021-11-30
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