人工晶体学报2024，Vol.53Issue(7)：1269-1279,11.
利用废弃椰木制备B和N共掺杂碳微纳结构及其电磁波吸收性能
Preparation of B and N Co-Doped Carbon Micro-Nanostructures Using Waste Coconut Wood and Their Electromagnetic Wave Absorption Properties
摘要
Abstract
;5G communication technology provides great convenience for social development and daily life,but it also brings serious electromagnetic wave pollution.To mitigate the harm caused by this pollution,designing lightweight and eco-friendly broadband electromagnetic wave absorbing materials has become a research focus.In this paper,a B and N co-doped carbon material with bamboo-like one-dimensional hollow tubular structure is prepared using coconut wood as precursor.B and N co-doping optimizes the composition of biomass-derived carbon and improves the impedance matching of the material.The bamboo-like one-dimensional hollow tubular structure is conducive to the entry of electromagnetic waves into the material.Consequently,the prepared material exhibits remarkable electromagnetic wave absorption properties,with the lowest reflection loss(RL)value of-59.64 dB at 14.12 GHz,an effective absorption bandwidth(EAB)width range of 5.88 GHz,and a required thickness of only 2.1 mm.Research results demonstrate that the excellent electromagnetic wave absorption performance of this material stems from a combination of multiple refractions and scattering within the material,dipolar polarization,interfacial polarization,and conductive polarization.关键词
椰木/B,N共掺杂/碳微纳结构/阻抗匹配/电磁波吸收/环境友好Key words
coconut wood/B,N co-doping/carbon micro-nanostructure/impedance matching/electromagnetic wave absorption/environmentally friendly分类
通用工业技术引用本文复制引用
范昊,陈拥军,李建保,陈帅峰,陈庆..利用废弃椰木制备B和N共掺杂碳微纳结构及其电磁波吸收性能[J].人工晶体学报,2024,53(7):1269-1279,11.基金项目
国家自然科学基金(52172086) （52172086）
