【2018-0330】改性氧化石墨烯/Fe3O4复合材料的制备及电磁吸收性能学术资讯

《复合材料学报》优先在线发表论文。

摘要：为改善氧化石墨烯/Fe3O4复合材料(GO/Fe3O4)的分散程度，利用三苯基膦(PPh3)对氧化石墨烯(GO)表面进行功能化改性得到改性氧化石墨烯(GOP)，然后采用共沉淀法一步合成GOP/Fe3O4复合材料。通过场发射SEM、高分辨TEM、XRD、FTIR、Raman和VSM对GOP/Fe3O4的形貌、结构和磁性能进行表征。利用PNA测试了GOP/Fe3O4的电磁参数并模拟计算其对电磁波的吸收性能。结果显示：GOP/Fe3O4的最大电磁波吸收强度值达到-25.4 dB，有效吸收频宽为6.0 GHz，较未改性GO/Fe3O4均有大幅度提高。

关键词：氧化石墨烯；Fe3O4；改性；复合材料；电磁吸收

Abstract: In order to improve the dispersion degree of graphene oxide/Fe3O4 composites, modified graphene oxide (GOP) was obtained by functional modification of graphene oxide (GO) surface with PPh3. GOP/Fe3O4 was synthesized in one step by coprecipitation method. The morphologies, structures and magnetic properties of GOP/Fe3O4 composites were characterized by SEM, TEM, XRD, FTIR, Raman and VSM. The electromagnetic parameters of the GOP/Fe3O4 were measured by PNA, and the electromagnetic wave absorption properties of GOP/Fe3O4 was simulated. The results show that the maximum absorption peak value of GOP/Fe3O4 is -25.4 dB and the maximum absorption bandwidth is 6.0 GHz, which is greatly improved compared with the unmodified GO/Fe3O4.