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

Jiahao Wang; Simin Zhang; Zhaolin Liu; Tengge Ning; Junfeng Yan; Kun Dai; Chunxue Zhai; Jiangni Yun

doi:10.1016/j.jcis.2023.09.001

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

J Colloid Interface Sci. 2023 Dec 15;652(Pt B):2029-2041. doi: 10.1016/j.jcis.2023.09.001. Epub 2023 Sep 9.

Authors

Jiahao Wang¹, Simin Zhang¹, Zhaolin Liu¹, Tengge Ning¹, Junfeng Yan², Kun Dai¹, Chunxue Zhai¹, Jiangni Yun³

Affiliations

¹ School of Information Science and Technology, Northwest University, Xi'an 710127, PR China.
² School of Information Science and Technology, Northwest University, Xi'an 710127, PR China. Electronic address: yanjf@nwu.edu.cn.
³ School of Information Science and Technology, Northwest University, Xi'an 710127, PR China; Department of Physics, McGill University, Montreal, Quebec H3A 2T8, Canada. Electronic address: niniyun@nwu.edu.cn.

PMID: 37696057
DOI: 10.1016/j.jcis.2023.09.001

Abstract

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 (RL_min) 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.

Keywords: Bio-carbon; Impedance matching; Radar cross section; Relaxation polarization loss.