Graphene-like structure of bio-carbon with CoFe Prussian blue derivative composites for enhanced microwave absorption

被引：26

作者：

Wang, Jiahao ^{[1
]}

Zhang, Simin ^{[1
]}

Liu, Zhaolin ^{[1
]}

Ning, Tengge ^{[1
]}

Yan, Junfeng ^{[1
]}

Dai, Kun ^{[1
]}

Zhai, Chunxue ^{[1
]}

Yun, Jiangni ^{[1
,2
]}

机构：

[1] Northwest Univ, Sch Informat Sci & Technol, Xian 710127, Peoples R China

[2] McGill Univ, Dept Phys, Montreal, PQ H3A 2T8, Canada

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2023年 / 652卷

基金：

中国国家自然科学基金;

关键词：

Bio-carbon; Impedance matching; Relaxation polarization loss; Radar cross section; ELECTROMAGNETIC-WAVE ABSORPTION; POROUS CARBON; CONSTRUCTION; ANALOGS; FOAM;

D O I：

10.1016/j.jcis.2023.09.001

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Traditional carbon materials such as graphene are often applied in the field of electromagnetic wave (EMW) absorption but they have unbalanced impedance matching and high conductivity. Bio-carbon with graphene-like structure derived from apples has many advantages over graphene: it can be prepared in large quantities and the abundant heteroatoms present in the lattice can provide many polarization phenomena. Herein, Prussian blue analogue (PBA) as a source of magnetic component was combined with bio-carbon or reduced graphene oxide (rGO) to study the EMW absorption properties. The fabricated BC/CFC-12-7 displayed performance with a minimum reflection loss (RLmin) of-72.57 dB and a wide effective absorption bandwidth (EAB) of 5.25 GHz with an ultra-thin and nearly equal matching thickness at 1.61 mm. The results show that the good EMW absorption property of bio-carbon composites comes from good conduction loss, large relaxation polarization loss especially from pyridinic-N, and better impedance matching. The optimized radar cross section is found to be -33.55 dB m2 in the far-field condition using CST. This work explored the advantages of bio-carbon as a novel EMW absorbing material compared with graphene and provided ideas for realizing high-performance EMW absorbing materials in the future.

引用

页码：2029 / 2041

页数：13