Enhanced microwave absorbing performance of CoNi alloy nanoparticles anchored on a spherical carbon monolith

Na Li, Changwen Hu, Minhua Cao*

*Corresponding author for this work

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Abstract

CoNi alloy nanoparticles anchored on a spherical carbon monolith (CoNi-C) were prepared by a solvothermal route and subsequent heat treatment without any templates. Their permittivity and permeability behaviors were studied in the frequency range of 2-18 GHz. The CoNi-C composites showed the best microwave absorbing performances compared to those of Co-C and Ni-C. The maximum reflection loss of the CoNi-C nanocomposites can reach -50.2 dB at 7.7 GHz with samples of 4 mm in thickness, better than that of the Ni-C composites, while the Co-C composites showed almost no absorption at all. The absorption mechanism of the three absorbents was also discussed.

Original languageEnglish
Pages (from-to)7685-7689
Number of pages5
JournalPhysical Chemistry Chemical Physics
Volume15
Issue number20
DOIs
Publication statusPublished - 28 May 2013

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Li, N., Hu, C., & Cao, M. (2013). Enhanced microwave absorbing performance of CoNi alloy nanoparticles anchored on a spherical carbon monolith. Physical Chemistry Chemical Physics, 15(20), 7685-7689. https://doi.org/10.1039/c3cp50778e