کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7990084 1516126 2018 31 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Lightweight and highly efficient electromagnetic wave-absorbing of 3D CNTs/GNS@CoFe2O4 ternary composite aerogels
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
Lightweight and highly efficient electromagnetic wave-absorbing of 3D CNTs/GNS@CoFe2O4 ternary composite aerogels
چکیده انگلیسی
A novel 3D ternary composite aerogel composed of carbon nanotubes (CNT) and graphene nanosheets (GNS)@CoFe2O4 nanohybrids was synthesized via a solution mixing and followed by freeze drying process. Uniform 3D porous structure and interconnected network with dense interlinked CNT throughout the cell backbones endowed the prepared ternary composite aerogel with excellent microwave absorbability and lightweight. The composite aerogel with 3.0 mm thickness exhibits a maximum absorption of 29.1 dB at 10.34 GHz and in particular, displays a broad bandwidth (entire X-band) corresponding to reflection loss below at −5 dB. The synergetic effect of conductive CNT and magnetic GNS@CoFe2O4 nanoparticles provided high electromagnetic loss by eddy current in the 3D porous framework due to the improvement of the impedance match characteristics, resulting in strong absorption and weak reflection. This work possibly helps to design and prepare lightweight and high performance electromagnetic wave absorption materials based on 3D aerogel.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 768, 5 November 2018, Pages 6-14
نویسندگان
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