首页|Structural engineering of porous biochar loaded with ferromagnetic/anti-ferromagnetic NiCo2O4/CoO for excellent electromagnetic dissipation with flexible and self-cleaning properties

Structural engineering of porous biochar loaded with ferromagnetic/anti-ferromagnetic NiCo2O4/CoO for excellent electromagnetic dissipation with flexible and self-cleaning properties

扫码查看
原文链接
  • NETL
  • NSTL
  • 万方数据
Design of multi-functional microwave absorption materials with strong dissipation ability is a practical approach to address the current issue of electromagnetic radiation pollution.Herein,based on the ex-change bias interaction between ferromagnetic and anti-ferromagnetic interfaces,a series of absorbers composed of the porous biochar loaded with ferromagnetic/anti-ferromagnetic NiCO2O4/CoO were suc-cessfully prepared via a fairly simple process of one-step calcination.By regulating the calcination tem-perature,the pore size and porosity of porous carbon,morphology of loaded NPs as well as the elec-tromagnetic response property and impedance matching characteristic in such composites can be mod-ulated.The porous biochar/NiCO2O4/CoO composite prepared under 350 ℃ possesses a remarkable elec-tromagnetic absorption reflection loss(RL)of-48.41 dB at 9.12 GHz with 2.5 mm thickness,and the effective absorption bandwidth(EAB)of 4.32 GHz with 2.2 mm thickness is located at X band,this is owing to the strong coupling effect of multiple dielectric polarizations,magnetic resonances,and eddy current consumption under matched impedance.In addition,the microwave absorbing patch prepared with this composite exhibits a well-hydrophobic property for self-cleaning function,and the large exten-sibility with substantial breaking strength endows its practical usage as a flexible absorber.

Microwave dissipationPorous biocharNickel-cobalt ferriteCobaltous oxideHydrophobic flexibility

Pengfei Yin、Yumei Luo、Di Lan、Jian Wang、Xing Feng、Zirui Jia、Guanglei Wu、Yi Zhang

展开 >

College of Science,Sichuan Agricultural University,Ya'an 625014,China

School of Materials Science and Engineering,Hubei University of Automotive,Technology,Shiyan 442002,China

College of Chemistry and Chemical Engineering,Qingdao University,Qingdao 266071,China

Institute of Materials for Energy and Environment,State Key Laboratory of Bio-fibers and Eco-textiles,College of Materials Science and Engineering,Qingdao University,Qingdao 266071,China

展开 >

Surface Project of Local Development in Science and Technology Guided by Central Government国家自然科学基金国家自然科学基金山东省自然科学基金Shandong Taishan Scholars Young Expert ProgramQingchuang Talents Induction Program of Shandong Higher Education Institution(Research and Innovation Team of Structural-Fun

2021ZYD00415237702652301192ZR2019YQ24tsqn202103057

2024

10.1016/j.jmst.2023.08.057

材料科学技术(英文版)
中国金属学会 中国材料研究学会 中国科学院金属研究所

材料科学技术(英文版)

CSTPCD
影响因子：0.657
ISSN：1005-0302
年,卷(期)：2024.180(13)
  • 85