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A facile one-pot strategy for fabrication of carbon-based microwave absorbers: effects on annealing and paraffin content

Abstract

In this work, a one-pot strategy was proposed to synthesize the carbon-coated Fe3O4 and carbon-coated Fe3C via the pyrolysis of colloidal Fe3O4 nanocrystals capped with oleic acid (OA) at different calcination temperatures. After exploring the microwave absorption performance of these composites, we found that carbon-coated Fe3C obtained at 700 oC possesses higher reflection loss (RL) and broader effective bandwidth (RL≤-10 dB) at low thickness. So the further investigation of the microwave absorption performance for carbon-capped Fe3C composites mixed with different mass percent of paraffin was also carried out. The results demonstrated that the multi-dielectric relaxation process and better impedance matching especially at low thickness and high frequency contributed to the preferable microwave absorption greatly.

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Publication details

The article was received on 24 Apr 2017, accepted on 13 Jun 2017 and first published on 13 Jun 2017


Article type: Paper
DOI: 10.1039/C7DT01471F
Citation: Dalton Trans., 2017, Accepted Manuscript
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    A facile one-pot strategy for fabrication of carbon-based microwave absorbers: effects on annealing and paraffin content

    Y. Zhang, B. Quan, W. Liu, X. Liang, G. Ji and Y. Du, Dalton Trans., 2017, Accepted Manuscript , DOI: 10.1039/C7DT01471F

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