Space-confined fabrication of hydrophobic magnetic carbon nanofibers for lightweight and enhanced microwave absorption

doi:10.1016/j.carbon.2022.06.001

	Space-confined fabrication of hydrophobic magnetic carbon nanofibers for lightweight and enhanced microwave absorption
	Shen, Yongqian 1,2; Zhang, Fan 1; Zhang, Yuchen 1; Song, Pengfei 1; Gao, Feng 2; Zhang, Dong 3; Liu, Chunli 1; Ma, Jiqiang 1; Feng, Huixia 4; Du, Xueyan 1
刊名	Carbon
	2022-09-01
卷号	197 页码:544-554
关键词	Dielectric losses Hydrophobicity Microwaves Nanomagnetics Silica Silicon SiO2 nanoparticles Carbon nanofibres Electronic communications Hydrophobic properties Hydrophobics Magnetic carbons Magnetic particle Microwave absorbers Microwave absorption Nano-SiO 2 Space-confined
ISSN号	0008-6223
DOI	10.1016/j.carbon.2022.06.001
英文摘要	Advanced microwave absorbers (MAs) containing magnetic particles and carbon nanofibers (CNFs) have raised widespread attention in the rapid popularization of electronic communication equipment. However, it is quite challenging to control the growth of magnetic particles in CNFs to improve electromagnetic waves (EMWs) loss and attenuation. Herein, a novel space-confined strategy was adopted to develop Co/CoO/SiO2/CNFs, in which Co/CoO nanoparticles (NPs) with single domain size and dispersed distribution could achieve enhanced magnetic loss and dielectric loss. The introduction of nano-SiO2 in the system could enhance the dielectric confinement effect of the nanofibers (NFs), while an interfacial confinement network could also be constructed to realize the refinement of Co/CoO NPs, enhance the electromagnetic (EM) loss, and ultimately ameliorate the microwave absorption performance of as-obtained NFs. When the additive amount of nano-SiO2 in the spinning solution was 1.0 mg, the as-prepared Co/CoO/SiO2/CNFs reached the optimal reflection loss (RL) of −52.9 dB at 12.64 GHz with a thickness of 2.5 mm, and the effective bandwidth (EBW) reached 5.67 GHz (10.46–16.13 GHz). Furthermore, the excellent hydrophobic properties of the CNFs endow them with potential self-cleaning function. The confinement strategy proposed in this work lays a foundation for the design of low-filling ratio and high-performance CNFs-based microwave absorbers, and presents a general approach for the synthesis of one-dimensional composite materials with controllable structures. © 2022 Elsevier Ltd
语种	英语
出版者	Elsevier Ltd
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/159420]
专题	材料科学与工程学院能源与动力工程学院省部共建有色金属先进加工与再利用国家重点实验室教务处（创新创业学院）研究生院
作者单位	1.School of Materials Science & Engineering, State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Lanzhou University of Technology, Lanzhou; 730050, China; 2.Shouhang Hi-Tech Energy Technology Co. Ltd., Lanzhou; 730000, China; 3.School of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou; 730050, China; 4.College of Petrochemical Technology, Lanzhou University of Technology, Lanzhou; 730050, China
推荐引用方式 GB/T 7714	Shen, Yongqian,Zhang, Fan,Zhang, Yuchen,et al. Space-confined fabrication of hydrophobic magnetic carbon nanofibers for lightweight and enhanced microwave absorption[J]. Carbon,2022,197:544-554.
APA	Shen, Yongqian.,Zhang, Fan.,Zhang, Yuchen.,Song, Pengfei.,Gao, Feng.,...&Du, Xueyan.(2022).Space-confined fabrication of hydrophobic magnetic carbon nanofibers for lightweight and enhanced microwave absorption.Carbon,197,544-554.
MLA	Shen, Yongqian,et al."Space-confined fabrication of hydrophobic magnetic carbon nanofibers for lightweight and enhanced microwave absorption".Carbon 197(2022):544-554.