Alkali and ion exchange co-modulation strategies to design magnetic-dielectric synergistic nano-absorbers for tailoring microwave absorption
作者机构：School of Material Science and TechnologyNanjing University of Aeronautics and AstronauticsNanjing 211106China
出 版 物：《Nano Research》 (纳米研究（英文版）)
年 卷 期：2023年第16卷第7期
页 面：8522-8532页
核心收录：
学科分类：07[理学] 070205[理学-凝聚态物理] 08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0702[理学-物理学]
基 金：We are thankful for financial support from the National Nature Science Foundation of China(Nos.51971111 and 52273247) the Fund of Prospective Layout of Scientific Research for NUAA(Nanjing University of Aeronautics and Astronautics)(No.ILA220461A22) the facilities in the Center for Microscopy and Analysis at Nanjing University of Aeronautics and Astronautics
主 题：microwave absorption alkali regulation ion exchange strategy switchable on/off mode nano-absorbers
摘 要：Alkali and Co^(2+)co-modulation has seldom been investigated as a prospective strategy to achieve high-efficient microwave absorbing(MA)*** this work,a new alkali and Co ion exchange co-modulation strategy was first reported,leading to broadband MA capacity through simultaneous manipulating multiple factors,such as composition,micromorphology,and heterogeneous *** enhancements in impedance matching and magnetic-dielectric loss were synergistically ***,the optimized FeCo alloy@porous carbon(FPC)nanocomposite with the alkali regulation delivered an effective absorption bandwidth(EAB)of 6.72 GHz,making it the merely single FeCo-based metal-organic framework derived FPC absorber with a low filler content of 15 wt.%.Interestingly,the nanocomposites by ion exchange strategy realized the switchable“on/offstates on electromagnetic ***,the radar cross-section(RCS)reduction value of the products reached 25.6 dB·m^(2) under the incident angle of 0°.In brief,this work not only offers the special role of alkali and Co^(2+)co-modulation in composition regulation,structure design,and MA capacity,but also provides a reliable strategy to develop smart nano-absorbers to cope with electromagnetic pollution issues.
维普期刊数据库