Three-dimensional foam-like Fe3O4@C core-shell nanocomposites: Controllable synthesis and wideband electromagnetic wave absorption properties

doi:10.1016/j.jmmm.2020.166518

IMR OpenIR

	Three-dimensional foam-like Fe3O4@C core-shell nanocomposites: Controllable synthesis and wideband electromagnetic wave absorption properties
	Meng, Xun; Yang, Weiwei; Han, Guanghui; Yu, Yongsheng; Ma, Song; Liu, Wei; Zhang, Zhidong
	2020-05-15
Source Publication	JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
Volume	502
Abstract	Ferrite and carbon nanocomposites are regarded to be excellent electromagnetic wave absorbers due to their compatible dielectric and magnetic loss capabilities. In this article, the three-dimensional (3D) Fe3O4@C coreshell nanocomposites with foam-like structure have been successfully prepared, which would greatly promote multiple reflection/scattering of the incident microwave. By adjusting the amount of polymeric precursors, the outer carbon can be perfectly controlled within the average thickness range of 9.1-34.8 nm. Meanwhile, through the synergy between 3D foam-like Fe3O4 core and outer carbon, the impedance matching conditions of the nanocomposites can be improved. Besides, the electromagnetic wave absorptivity of the nanocomposites presents a significant dependence on the thickness of outer carbon. When the average thickness of outer carbon is 28.3 nm, the absorber shows the most excellent performance, and the minimum reflection loss (RL) value is - 55.5 dB with 2.5 mm absorber thickness. Especially, when the thickness is tuned from 1.4 mm to 5.5 mm, the Fe3O4@C exhibits efficient absorption (RL <= - 20 dB) in an ultra-wide band (14.9 GHz). Based on the amazing microwave absorption properties, this nanocomposite can be considered as an ideal absorber.
DOI	10.1016/j.jmmm.2020.166518
WOS ID	WOS:000521826900042
Citation statistics	Cited Times:11[WOS] [WOS Record] [Related Records in WOS]
Document Type	期刊论文
Identifier	http://ir.imr.ac.cn/handle/321006/82861
Collection	中国科学院金属研究所
Recommended Citation GB/T 7714	Meng, Xun,Yang, Weiwei,Han, Guanghui,et al. Three-dimensional foam-like Fe3O4@C core-shell nanocomposites: Controllable synthesis and wideband electromagnetic wave absorption properties[J]. JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS,2020,502.
APA	Meng, Xun.,Yang, Weiwei.,Han, Guanghui.,Yu, Yongsheng.,Ma, Song.,...&Zhang, Zhidong.(2020).Three-dimensional foam-like Fe3O4@C core-shell nanocomposites: Controllable synthesis and wideband electromagnetic wave absorption properties.JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS,502.
MLA	Meng, Xun,et al."Three-dimensional foam-like Fe3O4@C core-shell nanocomposites: Controllable synthesis and wideband electromagnetic wave absorption properties".JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS 502(2020).

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