|کد مقاله||کد نشریه||سال انتشار||مقاله انگلیسی||ترجمه فارسی||نسخه تمام متن|
|5021073||1369688||2018||10 صفحه PDF||ندارد||دانلود رایگان|
â¢Three-dimensional boron and nitrogen (3D B/N) co-doped C@Fe2O3/Fe3C/Fe nanoparticle decorated CNTs are fabricated.â¢These 3D B/N co-doped C@Fe2O3/Fe3C/Fe-CNTs are fabricated via a facile thermal treatment process.â¢These 3D B/N co-doped C@Fe2O3/Fe3C/Fe-CNTs exhibit excellent microwave absorption properties.
Herein, we report a facile process to massively synthesize three-dimensional (3D) boron and nitrogen co-doped carbon@Fe2O3/Fe3C/Fe nanoparticle decorated carbon nanotubes (B/N co-doped C@Fe2O3/Fe3C/Fe-CNTs). The fabrication involved a simple one-step chemical vapor deposition process. These as-synthesized 3D B/N co-doped C@Fe2O3/Fe3C/Fe-CNTs based absorbers exhibited excellent microwave absorption properties with tunable strong absorption wavebands in the frequency range of 2â18Â GHz. A minimum reflection loss (RL) value ofÂ â42.6Â dB was observed at 6.88Â GHz with absorber thickness of 3.5Â mm. Moreover, the absorption bandwidth for RL less thanÂ â10Â dB was as large as 4.14Â GHz when the absorber thickness dropped to 2.0Â mm. A possible absorption mechanism was proposed in detail, which can be attributed to the synergy of the impedance matching and enhancement of multiple reflection among 3D B/N co-doped C@Fe2O3/Fe3C/Fe nanoparticles.
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Journal: Composites Part B: Engineering - Volume 132, 1 January 2018, Pages 141-150