期刊
ACS OMEGA
卷 6, 期 13, 页码 9164-9175出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsomega.1c00382
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资金
- Indian Institute of Technology, Kharagpur
The study focuses on the fabrication of RGO/Fe3O4/PANI ternary composite, which shows enhanced dielectric and magnetic loss compared to binary composites, leading to high SET and maximum RL values in the microwave absorbing shielding material.
The present work is focused on fabrication of reduced graphene oxide/iron(II/III) oxide/polyaniline (RGO/Fe3O4/PANI) ternary composite by a hydrothermal method, its characterization, and application in the development of a high microwave absorbing shielding material. The RGO/Fe3O4/PANI composite showed dramatic enhancement of dielectric loss and magnetic loss compared to Fe3O4/PANI and RGO/Fe3O4 binary composites. This is ascribed to the embedment of more heterostructure phases. As a result, RGO/Fe3O4/PANI showed remarkably high SET (similar to 28 dB) through the absorption dominant mechanism. Our findings also showed maximum RL of Fe3O4/PANI, RGO/Fe3O4, and RGO/Fe3O4/PANI in the range of 2-8 GHz corresponding to -25 to -35, - 40 to -46, and approximately -64 dB, respectively. This is in all probability due to the good impedance matching between permittivity/ permeability and dielectric/magnetic losses.
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