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首页> 外文期刊>RSC Advances >Preparation of a reduced graphene oxide/SiO2/Fe3O4 UV-curing material and its excellent microwave absorption properties
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Preparation of a reduced graphene oxide/SiO2/Fe3O4 UV-curing material and its excellent microwave absorption properties

机译：还原型氧化石墨烯/ SiO 2 / Fe 3 O 4 紫外线固化材料的制备及其优异的微波吸收性能

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摘要

A RGO/SiO2/Fe3O4 UV-curing material was synthesized and its nanostructures and morphologies were characterized at the nanoscale. Microwave absorption properties show that the RGO/SiO2/Fe3O4 hybrid has enhanced electromagnetic wave absorption characteristics. The maximum reflection loss of the RGO/SiO2/Fe3O4 UV-curing material reaches ?56.4 dB at 8.1 GHz with the thickness of 4.5 mm, and the maximum effective absorption bandwidth reaches 7.1 GHz with the thickness of 3.0 mm. Investigations reveal that the dispersion and reflection loss of Fe3O4 which is wrapped by SiO2 is obviously improved. The enhanced absorption properties of the RGO/SiO2/Fe3O4 hybrid are ascribed to the synergistic effect of magnetic Fe3O4 nanocrystals and light-weight graphene. These results suggest that the RGO/SiO2/Fe3O4 hybrid could be used as a kind of candidate absorber. The mass ratio of the RGO/SiO2/Fe3O4 to UV-curing material was only 0.2%. It is believed that such a composite will find its wide applications in a microwave absorbing area.
机译：RGO / SiO 2 / Fe 3 O 4 合成了一种小的紫外线固化材料，并在纳米尺度上表征了其纳米结构和形貌。微波吸收特性表明，RGO / SiO 2 / Fe 3 O 4 < / sub> 混合具有增强的电磁波吸收特性。 RGO / SiO 2 / Fe 3 O 4 < / sub> 紫外线固化材料在8.1 GHz处厚度为4.5 mm时达到±56.4 dB，最大有效吸收带宽在3.0 mm处达到7.1 GHz。研究表明，被SiO <包裹的Fe 3 O 4 的色散和反射损耗sub> 2 明显得到改善。 RGO / SiO 2 / Fe 3 O 4 < / sub> 杂化物归因于磁性Fe 3 O 4 磁性纳米晶体的协同作用，轻质石墨烯。这些结果表明，RGO / SiO 2 / Fe 3 O 4 混合体可以用作一种候选吸收体。 RGO / SiO 2 / Fe 3 O 4 到紫外线固化的材料仅为0.2％。相信这样的复合材料将在微波吸收领域中找到广泛的应用。

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