Title

Remarkable improvement in microwave absorption by cloaking a micro-scaled tetrapod hollow with helical carbon nanofibers

Authors

Authors

X. Jian; X. N. Chen; Z. W. Zhou; G. Li; M. Jiang; X. L. Xu; J. Lu; Q. M. Li; Y. Wang; J. H. Gou;D. Hui

Comments

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Abbreviated Journal Title

Phys. Chem. Chem. Phys.

Keywords

ATOMIC LAYER DEPOSITION; DECOMPOSITION; CATALYSTS; GROWTH; COPPER; NANOPARTICLES; NANOCOILS; ACETYLENE; NANOSTRUCTURES; NANOCRYSTALS; Chemistry, Physical; Physics, Atomic, Molecular & Chemical

Abstract

Helical nanofibers are prepared through in situ growth on the surface of a tetrapod-shaped ZnO whisker (T-ZnO), by employing a precursor decomposition method then adding substrate. After heat treatment at 900 degrees C under argon, this new composite material, named helical nanofiber-T-ZnO, undergoes a significant change in morphology and structure. The T-ZnO transforms from a solid tetrapod ZnO to a micro-scaled tetrapod hollow carbon film by reduction of the organic fiber at 900 degrees C. Besides, helical carbon nanofibers, generated from the carbonization of helical nanofibers, maintain the helical morphology. Interestingly, HCNFs with the T-hollow exhibit remarkable improvement in electromagnetic wave loss compared with the pure helical nanofibers. The enhanced loss ability may arise from the efficient dielectric friction, interface effect in the complex nanostructures and the micro-scaled tetrapod-hollow structure.

Journal Title

Physical Chemistry Chemical Physics

Volume

17

Issue/Number

5

Publication Date

1-1-2015

Document Type

Article

Language

English

First Page

3024

Last Page

3031

WOS Identifier

WOS:000348203200013

ISSN

1463-9076

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