Preparation and electromagnetic wave absorption properties of core-shell structured Fe3O4-polyaniline nanoparticles

被引：57
|
作者：
Sun, Yuping [1 ]
Xiao, Feng [2 ]
Liu, Xianguo [2 ]
Feng, Chao [2 ]
Jin, Chuangui [2 ]
机构：
[1] Anhui Univ Technol, Ctr Engn Practice & Innovat Educ, Maanshan 243002, Peoples R China
[2] Anhui Univ Technol, Sch Mat Sci & Engn, Anhui Key Lab Met Mat & Proc, Maanshan 243002, Peoples R China
来源：
RSC ADVANCES | 2013年 / 3卷 / 44期
基金：
中国国家自然科学基金;
关键词：
ENHANCED MICROWAVE-ABSORPTION; ANODE MATERIAL; NANOCAPSULES; NANOCOMPOSITES; MICROSPHERES; COMPOSITES; PERMITTIVITY; POLYANILINE;
D O I：
10.1039/c3ra43559h
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Fe3O4 nanoparticles were first prepared by a facile oxidation-reduction method and then Fe3O4-polyaniline nanoparticles were obtained by an in situ polymerization of aniline in the presence of dodecyl benzenesulfonic acid. The microstructure and electromagnetic properties of the Fe3O4-polyaniline nanoparticles have been investigated. The Fe3O4-polyaniline nanoparticles with a core of Fe3O4 nanoparticles and a shell of polyaniline polymer are irregular spheres with an average size of 72.4 nm. An optimal reflection loss of -35.1 dB is observed at 16.7 GHz with a 1.7 mm thick layer. The excellent electromagnetic properties are ascribed to the dielectric resonance from the special core-shell microstructure and the broad and strong natural resonance from the Fe3O4 nanoparticles.
引用
收藏
页码：22554 / 22559
页数：6
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