Abstract
Abstract Using hollow Fe2O3 particles as the catalyst, the core/shell structured Fe/carbon nanotube (CNT) hybrid could be synthesized by a chemical vapor deposition method without the hydrogen reduction process. Based on the obtained results, a possible growth mechanism of the Fe/CNT hybrid was discussed. And the investigations of electromagnetic and microwave absorption performances indicate that a minimum reflection loss (RL) value of the obtained sample is ca. −40.15 dB at 17.15 GHz with a matching thickness of 1.5 mm, and the RL value below −20 dB can be obtained in the whole frequency range (1.0–18 GHz) with the sample thickness varies from 1.3 to 10.0 mm. The results demonstrate that a simple and environment-friendly route has been proposed for the production of core/shell structured carbon nanohybrid. The obtained Fe/CNT hybrid exhibits excellent microwave absorption properties and has potential applications in thin thickness and light-weight microwave absorbers.
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