Abstract
A three-dimensional (3D) nanocomposite of reduced graphene oxide (RGO) and zinc oxide (ZnO) was synthesized by a mild solution-process and a freeze-dried process effectively to keep the whole system fluffy. The BaFe12O19 nanocrystals were synthesized by nitrate citric acid sol–gel auto-ignition method. The electromagnetic and microwave absorption properties of 3D-RGO-ZnO/BaFe12O19 nanocomposites were investigated and this new type 3D material exhibited an efficient reflection loss value and a wide absorption bandwidth. The minimum reflection loss arrives −43.45 dB at 11.52 GHz for 7 wt% of 3D-RGO-ZnO in the nanocomposite with a thickness of 2.0 mm, and the effective absorption bandwidth is larger than 5.8 GHz (the reflection loss below −10 dB). Therefore, the 3D-RGO-ZnO/BaFe12O19 nanocomposites can be considered as an excellent material candidate for microwave absorbers.
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Acknowledgements
This work is supported by the National Natural Science Foundation of China [Grant numbers 51202137, 61240054, 11274222 and 11544011].
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Sun, X., Sheng, L., Yang, J. et al. Three-dimensional (3D) reduced graphene oxide (RGO)/zinc oxide (ZnO)/barium ferrite nanocomposites for electromagnetic absorption. J Mater Sci: Mater Electron 28, 12900–12908 (2017). https://doi.org/10.1007/s10854-017-7120-2
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DOI: https://doi.org/10.1007/s10854-017-7120-2