Synthesis and microwave absorbing properties of γ-Fe2O3-SiO2-poly (3,4-ethylenedioxythiophene) core-shell-shell nanocomposites

被引：16
作者：
Ji, Shengning [1 ,2 ]
Zhang, Zhiming [1 ,2 ]
Jiang, Xiaohui [1 ,2 ]
Yu, Liangmin [1 ,2 ]
机构：
[1] Ocean Univ China, Key Lab Marine Chem Theory & Technol, Minist Educ, Qingdao 266100, Peoples R China
[2] Ocean Univ China, Qingdao Collaborat Innovat Ctr Marine Sci & Techn, Qingdao 266100, Peoples R China
来源：
JOURNAL OF MATERIALS SCIENCE | 2017年 / 52卷 / 20期
基金：
中国国家自然科学基金;
关键词：
ABSORPTION PROPERTIES; MAGNETITE NANOPARTICLES; CARBON NANOTUBES; SILICA SPHERES; MICROSPHERES; PERFORMANCE; COMPOSITE; FERRITE; FILMS; POLY(3,4-ETHYLENEDIOXYTHIOPHENE);
D O I：
10.1007/s10853-017-1337-6
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The three-layer core-shell-shell gamma-Fe2O3-SiO2-poly (3,4-ethylenedioxythiophene) (PEDOT) nanocomposite has been successfully synthesized by a facile chemical process followed by a detailed investigation of morphology, composition, electromagnetic, and microwave absorption properties. The electrical conductivity of gamma-Fe2O3-SiO2-PEDOT nanocomposites was as high as 3.34 S cm(-1), and the saturation magnetization was in the range of 1-7 emu g(-1). The minimum reflection loss reached -27.5 dB at 13.8 GHz with a matching layer thickness of 2.0 mm and an effective absorption bandwidth (<-10 dB) of about 4.1 GHz (12.0-16.1 GHz). The excellent microwave absorbing performance of this nanocomposite is due to proper impedance matching and the synergistic interaction of dielectric loss, the magnetic loss, and core-shell microstructure. Moreover, the electromagnetic and microwave absorbing properties of gamma-Fe2O3-SiO2-PEDOT nanocomposites can be regulated by changing the dosage of functionalized gamma-Fe2O3-SiO2.
引用
收藏
页码：12358 / 12369
页数：12
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