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Ferroferric Oxide/Multiwalled Carbon Nanotube vs Polyaniline/Ferroferric Oxide/Multiwalled Carbon Nanotube Multiheterostructures for Highly Effective Microwave Absorption

Cao, Mao-Sheng, Yang, Jian, Song, Wei-Li, Zhang, De-Qing, Wen, Bo, Jin, Hai-Bo, Hou, Zhi-Ling, Yuan, Jie·2012·ACS Applied Materials & Interfaces

Abstract

Light-weight nanocomposites filled with carbon nanotubes (CNTs) are developed for their significant potentials in electromagnetic shielding and attenuation for wide applications in electronics, communication devices, and specific parts in aircrafts and vehicles. Specifically, the introduction of a second phase into/onto CNTs for achieving CNT-based heterostructures has been widely pursued due to the enhancement in either dielectric loss or magnetic loss. In this work, ferroferric oxide (Fe(3)O(4)) was selected as the phase in multiwalled carbon nanotube (MWCNT)-based composites for enhancing magnetic properties to obtain improved electromagnetic attenuation. A direct comparison between the two-phase heterostructures (Fe(3)O(4)/MWCNTs) and polyaniline (PANI) coated Fe(3)O(4)/MWCNTs, namely, three-phase heterostructures (PANI/Fe(3)O(4)/MWCNTs), was made to investigate the interface influences of Fe(3)O(4) and PANI on the complex permittivity and permeability separately. Compared to PANI/Fe(3)O(4)/MWCNTs, Fe(3)O(4)/MWCNTs exhibited enhanced magnetic properties coupled with increased dielectric properties. Interfaces between MWCNTs and heterostructures were found to play a role in the corresponding properties. The evaluation of microwave absorption of their wax composites was carried out, and the comparison between Fe(3)O(4)/MWCNTs and PANI/Fe(3)O(4)/MWCNTs with respect to highly efficient microwave absorption and effective absorption bandwidth was discussed.

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Authors
Cao, M.-S., Yang, J., Song, W.-L., Zhang, D.-Q., Wen, B., Jin, H.-B., Hou, Z.-L., & Yuan, J.
Venue
ACS Applied Materials & Interfaces
Published
2012-11-26
Volume
4
Issue
12
Pages
6949-6956
ISSN
  • 1944-8244 (ISSN-L)
  • 1944-8252
OpenAlex
W2025191013
Cited by
899
References
0
FWCI
12.63
Type
journal article
Language
en
Open access
closed

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