کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
820157 | 1469517 | 2015 | 8 صفحه PDF | دانلود رایگان |

Two kinds of hierarchical structures of graphene@Fe3O4@C@PANI (polyaniline) nanorod arrays were prepared by covalently and noncovalently grafting PANI nanorod arrays to the surface of graphene@Fe3O4@C, respectively. The measured electromagnetic parameters show that the bonding form between PANI nanorod arrays and graphene@Fe3O4@C have significantly effect on microwave absorption properties of graphene@Fe3O4@C@PANI nanorod arrays hierarchical structures, and the formation of covalent bond between PANI nanorod arrays and graphene@Fe3O4@C in hierarchical structures exhibits significantly enhanced microwave absorption performance. The maximum reflection loss is up to −44.2 dB at 11.4 GHz and the absorption bandwidth with a reflection loss below −10 dB ranges from 9.7 to 15.5 GHz with a thickness of 3 mm. Therefore, the high microwave absorption performance with lightweight and wide absorption frequency band can be realized by fabricating graphene-based hierarchical structures using covalent bond interaction.
Journal: Composites Science and Technology - Volume 108, 25 February 2015, Pages 1–8