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

    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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