Ni/NiO/SiO2/C nanofibers with strong wideband microwave absorption and robust hydrophobicity

doi:10.1016/j.apsusc.2022.152964

	Ni/NiO/SiO2/C nanofibers with strong wideband microwave absorption and robust hydrophobicity
	Shen, Yongqian; Zhang, Fan; Zhang, Yuchen; Dang, Minmin; Li, Bin; Ma, Jiqiang; Du, Xueyan
刊名	Applied Surface Science
	2022-06-30
卷号	588
关键词	Annealing Carbon nanofibers Contact angle Electrospinning Hydrophobicity Nickel compounds Silica nanoparticles Silicon SiO2 nanoparticles Annealing temperatures Carbon nanofibres Effective absorption Human health In-situ annealing Microwave absorbers Microwave absorption Ni/NiO/SiO2/carbon nanofiber Wave absorption Wideband microwaves
ISSN号	0169-4332
DOI	10.1016/j.apsusc.2022.152964
英文摘要	Multifunctional microwave absorbers with robust hydrophobicity and enhanced wave absorption are of great significance for human health and the martial applications. Herein, carbon nanofibers (CNFs) inlaid with Ni/NiO and SiO2 nanoparticles were prepared by electrospinning and in-situ annealing method. Contrast experiments at different annealing temperatures had been conducted to illustrate the formation process and microwave loss mechanism of Ni/NiO/SiO2/CNFs. At the annealing temperature of 550 °C, the optimal reflection loss (RL) of −40.1 dB was reached at 16.6 GHz with a thickness of 2.5 mm, the effective absorption bandwidth (EAB) was 5.2 GHz. The maximum EAB of 8.0 GHz was obtained as the thickness close to 3.0 mm, covering the half of X band and entire Ku band. It was worth mentioning that the introduction of nano SiO2 into the Ni/NiO/CNFs annealed at 550 °C could refine the nanoparticles of Ni, promote the formation of Ni, improve the complex permittivity, and ultimately widen the EAB. Moreover, the contact angle (CA) of the Ni/NiO/SiO2/CNFs membranes annealed at 450, 550, 650 and 750 °C was 154.3°, 138.7°, 142.2° and 144.9°, respectively, illustrating that the products were of robust hydrophobicity. Therefore, the as-prepared NFs are promising in multifunction wave absorbers. © 2022
语种	英语
出版者	Elsevier B.V.
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/158033]
专题	材料科学与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研究生院
作者单位	School of Materials Science & Engineering, State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Lanzhou University of Technology, Lanzhou; 730050, China
推荐引用方式 GB/T 7714	Shen, Yongqian,Zhang, Fan,Zhang, Yuchen,et al. Ni/NiO/SiO2/C nanofibers with strong wideband microwave absorption and robust hydrophobicity[J]. Applied Surface Science,2022,588.
APA	Shen, Yongqian.,Zhang, Fan.,Zhang, Yuchen.,Dang, Minmin.,Li, Bin.,...&Du, Xueyan.(2022).Ni/NiO/SiO2/C nanofibers with strong wideband microwave absorption and robust hydrophobicity.Applied Surface Science,588.
MLA	Shen, Yongqian,et al."Ni/NiO/SiO2/C nanofibers with strong wideband microwave absorption and robust hydrophobicity".Applied Surface Science 588(2022).