Abstract
In this paper, reduced graphene oxide functionalized with cobalt ferrite nanocomposites (CoFe@rGO) as a novel type of electromagnetic wave (EW) absorbing materials was successfully prepared by a three-step chemical method including hydrothermal synthesis, annealing process and mixing with paraffin. The effect of the sample thickness and the amount of paraffin on the EW absorption properties of the composites was studied, revealing that the absorption peaks shifted toward the low frequency regions with the increasing thickness while other conditions had little or no effect. It is found that the CoFe@rGO enhanced both dielectric losses and magnetic losses and had the best EW absorption properties and the wide wavelength coverage of the hole Ku-Band when adding only 5wt% composites to paraffin. Therefore, CoFe@rGO could be used as an efficient and lightweight EW absorber. Compared with the research into traditional absorbing materials, this figures of merit are typically of the same order of magnitude, but given the lightweight nature of the material and the high level of compatibility with mass production standards, making use of CoFe@rGO as an electromagnetic absorber material shows great potential for real product applications.
Highlights
The absorption performance of the prepared cobalt ferrite (CoFe) nanocomposite absorbing material can be significantly improved[19,20,21]
Based on the above considerations, CoFe2O4 mixed to Reduced graphene oxide (rGO) nanocomposites (CoFe@rGO) were prepared by facile hydrothermal synthesis
A novel absorbing material reduced graphene oxide functionalized with cobalt ferrite nanocomposites (CoFe@rGO) was prepared
Summary
The absorption performance of the prepared cobalt ferrite (CoFe) nanocomposite absorbing material can be significantly improved[19,20,21]. Reduced graphene oxide (rGO), a widely-known derivative of graphene obtained from chemical reduction of graphene oxide by thermal, chemical or electrical treatments, possesses good dielectric properties, which can be used to prepare absorbing materials with dielectric loss mechanism[12,18,25,26]. It was found that when adding only 5 wt% composites to paraffin, the prepared CoFe@rGO with a thickness of 2.3 mm had the best EW absorption property. Considering its simple synthetic method and controllable ratio in the final composites, this kind of synthesized materials would be highly valuable in commercial use
Sign-in/Register to view highlights & summary 
Published Version (
Free)
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
