Magnetic, conductive, and microwave absorption properties of polythiophene nanofibers layered on MnFe2O4/Fe3O4 core–shell structures
Magnetic, conductive, and microwave absorption properties of polythiophene nanofibers layered on MnFe2O4/Fe3O4 core–shell structures
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DOI：
10.1016/j.mssp.2014.02.046
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发表时间：
2014-08
影响因子：
4.1
通讯作者：
S. Hosseini;A. Moghimi;M. Moloudi
中科院分区：
文献类型：
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作者：
S. Hosseini;A. Moghimi;M. Moloudi
采用共沉淀法和原位聚合法制备了聚噻吩（PTh）纳米纤维包覆在MnFe 2 O 4/Fe 3 O 4核壳纳米粒子上。通过傅里叶变换红外光谱（FTIR）、X射线衍射（XRD）、透射电子显微镜（TEM）、扫描电子显微镜（SEM）、振动样品磁强计和雷达吸收材料反射率（使用远场雷达截面法）对产物进行了表征。XRD和FTIR结果证实了MnFe 2 O 4/Fe 3 O 4/PTh纳米复合材料的形成。用TEM和SEM观察了复合材料的形貌。在PTh涂层后的磁性和导电性能的变化进行了研究。在8.0-12.0 GHz频率范围内研究了纳米复合材料的微波吸收性能。MnFe 2 O 4/Fe 3 O 4纳米粒子具有核壳结构，其中MnFe 2 O 4为磁性核，Fe 3 O 4为壳。MnFe_2O_4/Fe_3O_4/PTh纳米复合材料具有以PTh为外壳的多壳-核结构。
Polythiophene (PTh) nanofibers coated on MnFe2O4/Fe3O4core–shell nanoparticles were synthesized via co-precipitation andin situpolymerization. The products were characterized by Fourier-transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), vibrating sample magnetometry, and radar-absorbing material reflectivity using the far-field radar cross-section method. XRD and FTIR results confirmed the formation of MnFe2O4/Fe3O4/PTh nanocomposites. The morphology of the nanocomposites was observed by TEM and SEM. Changes in the magnetic and conductive properties after PTh coating were investigated. The microwave absorption properties of the nanocomposites were investigated in the frequency range 8.0–12.0 GHz. MnFe2O4/Fe3O4nanoparticles had a core–shell structure, with MnFe2O4as the magnetic core and Fe3O4as the shell. MnFe2O4/Fe3O4/PTh nanocomposites had a multiple shell–core structure, with PTh as the outer shell.