Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1606608 | Journal of Alloys and Compounds | 2016 | 6 Pages |
Abstract
The novel sandwich structures of graphene@Fe3O4@PANI decorated with TiO2 nanosheets were firstly successfully prepared by simple hydrothermal method and in situ polymerization. VSM results reveal that the nanocomposites have a superparamagnetic behavior. Structure and morphology were characterized by X-ray diffraction, transmission electron microscopy, and field-emission scanning electron microscopy. Electron microscopy images show that TiO2 nanosheets are mostly grown upright on the top of graphene@Fe3O4@PANI support with a random orientation, and form hierarchical structures. Electromagnetic (EM) wave absorption properties of graphene@Fe3O4@PANI@TiO2 nanosheets containing 50wt% paraffin were investigated in the frequency region of 2-18 GHz. The maximum reflection loss of the nanocomposites is up to â41.8 dB at 14.4 GHz with a thickness of 1.6 mm, and the absorption bandwidth of RL < â10 dB is almost up to 3.5 GHz. Thus, the enhanced EM wave absorption properties of graphene@Fe3O4@PANI@TiO2 nanosheets can be used as promising EM wave absorbers.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
Panbo Liu, Ying Huang, Yiwen Yang, Jing Yan, Xiang Zhang,