One-pot solvothermal synthesis of Fe/Fe3O4 composites with broadband microwave absorption
文献类型：期刊论文
| 作者 | Wang, Xiaolei1; Geng, Qiyao1; Shi, Guimei1; Xu, Ge1; Yu, Jin1; Guan, Yinyan1; Zhang, Yajing4; Li, Da2,3 |
| 刊名 | JOURNAL OF ALLOYS AND COMPOUNDS
 |
| 出版日期 | 2019-09-30 |
| 卷号 | 803页码:818-825 |
| 关键词 | Solvothermal synthesis Fe/Fe3O4 Diploe polarization Interfacial polarization Impedance matching Wide-frequency |
| ISSN号 | 0925-8388 |
| DOI | 10.1016/j.jallcom.2019.06.376 |
| 通讯作者 | Wang, Xiaolei(xlwang@alum.imr.ac.cn) |
| 英文摘要 | 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. |
| 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 |
| 语种 | 英语 |
| WOS记录号 | WOS:000476464900095 |
| 出版者 | ELSEVIER SCIENCE SA |
| 资助机构 | National Natural Science Foundation of China ; Natural Science Foundation of Liaoning Province ; Science Research Foundation of Education Department of Liaoning Province |
| 源URL | [http://ir.imr.ac.cn/handle/321006/134781]  |
| 专题 | 金属研究所_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.Chinese Acad Sci, Int Ctr Mat Phys, Shenyang 110016, Liaoning, Peoples R China 3.Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China 4.Shenyang Univ Chem Technol, Coll Chem Engn, Shenyang 110142, 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. |
入库方式： OAI收割
来源：金属研究所
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