One-pot solvothermal synthesis of Fe/Fe3O4 composites with broadband microwave absorption

doi:10.1016/j.jallcom.2019.06.376

IMR OpenIR

	One-pot solvothermal synthesis of Fe/Fe3O4 composites with broadband microwave absorption
	Wang, Xiaolei 1; Geng, Qiyao 1; Shi, Guimei 1; Xu, Ge 1; Yu, Jin 1; Guan, Yinyan 1; Zhang, Yajing 2; Li, Da 3,4
通讯作者	Wang, Xiaolei(xlwang@alum.imr.ac.cn)
	2019-09-30
发表期刊	JOURNAL OF ALLOYS AND COMPOUNDS
ISSN	0925-8388
卷号	803 页码:818-825
摘要	In the present work, we have developed a simple and low-cost solvothermal method for the one-pot construction of the Fe/Fe3O4 composites with the Fe3O4 nanoparticles depositing on the surface of Fe polyhedrons. The Fe3O4 content in the Fe/Fe3O4 composites can be easily improved by the decrease of volume ratio of ethanol (95 vol%)/distilled water (V-ethanol/V-water). The electromagnetic parameters of the Fe/Fe3O4 composites (70 wt%)-paraffin mixtures are deeply depended upon the Fe3O4 content. The complex permittivity is gradually decreased and the complex permeability maintain the modest value with the increase of the Fe3O4 content. When the Fe3O4 content is 56 wt%, the minimum reflection loss (RL) value can reach -33 dB at a matching thickness of 1.5 mm. The optimal RL is -24.6 dB at 2 mm with the absorption bandwidth of 5 GHz and the integrated bandwidth with RL below -10 dB is 14.4 GHz in the frequency range of 3.6-18 GHz with a changeable thickness of 1.4-5 mm. Due to the double-loss characteristics of the Fe3O4 nanoparticles, the wide-frequency microwave absorption properties of the Fe/Fe3O4 composites at high frequency can be attributed to dipole polarization relaxation loss of the Fe3O4 nanoparticles, interfacial polarization relaxation loss between Fe and Fe3O4 and preferable impedance matching. This result indicates that the Fe/Fe3O4 composites could be a candidate for microwave absorption field. (C) 2019 Elsevier B.V. All rights reserved.
关键词	Solvothermal synthesis Fe/Fe3O4 Diploe polarization Interfacial polarization Impedance matching Wide-frequency
资助者	National Natural Science Foundation of China ; Natural Science Foundation of Liaoning Province ; Science Research Foundation of Education Department of Liaoning Province
DOI	10.1016/j.jallcom.2019.06.376
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[51601120] ; National Natural Science Foundation of China[51301114] ; Natural Science Foundation of Liaoning Province[20170540679] ; Science Research Foundation of Education Department of Liaoning Province[LQ2017011]
WOS研究方向	Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000476464900095
出版者	ELSEVIER SCIENCE SA
引用统计	被引频次：26[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/134784
专题	中国科学院金属研究所
通讯作者	Wang, Xiaolei
作者单位	1.Shenyang Univ Technol, Sch Sci, Dept Chem & Environm, Shenyang 110870, Liaoning, Peoples R China 2.Shenyang Univ Chem Technol, Coll Chem Engn, Shenyang 110142, Liaoning, Peoples R China 3.Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China 4.Chinese Acad Sci, Int Ctr Mat Phys, Shenyang 110016, Liaoning, Peoples R China
推荐引用方式 GB/T 7714	Wang, Xiaolei,Geng, Qiyao,Shi, Guimei,et al. One-pot solvothermal synthesis of Fe/Fe3O4 composites with broadband microwave absorption[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2019,803:818-825.
APA	Wang, Xiaolei.,Geng, Qiyao.,Shi, Guimei.,Xu, Ge.,Yu, Jin.,...&Li, Da.(2019).One-pot solvothermal synthesis of Fe/Fe3O4 composites with broadband microwave absorption.JOURNAL OF ALLOYS AND COMPOUNDS,803,818-825.
MLA	Wang, Xiaolei,et al."One-pot solvothermal synthesis of Fe/Fe3O4 composites with broadband microwave absorption".JOURNAL OF ALLOYS AND COMPOUNDS 803(2019):818-825.