Journal
CERAMICS INTERNATIONAL
Volume 49, Issue 8, Pages 12814-12821Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2022.12.147
Keywords
Microwave absorption; Infrared emissivity; Reduced graphene oxide
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In this study, rGO/Al/CoFe2O4 composites with different amounts of CoFe2O4 were synthesized using a one-step hydrothermal method, and their electromagnetic properties and infrared emissivity were investigated. The results showed that the rGO/Al/CoFe2O4 composite with a CoFe2O4 content of 0.06 g exhibited a minimum reflection loss (RLmin) of -68.03 dB at 15.5 GHz with a thickness of 1.38 mm. The effective absorption bandwidth (EAB) and infrared emissivity were found to be 3.3 GHz and 0.63, respectively. Therefore, the designed rGO/Al/CoFe2O4 composites can be utilized in both wave absorption and low-infrared emissivity applications, providing an effective solution for designing bifunctional wave absorption materials.
Due to the harmful influence of electromagnetic waves, electromagnetic absorption materials are being actively pursued. Herein, a one-step hydrothermal method is used to synthesize rGO/Al/CoFe2O4 composites with different amounts of CoFe2O4, and their electromagnetic properties and infrared emissivity are studied in detail. The results reveal that the rGO/Al/CoFe2O4 composite with a CoFe2O4 content of 0.06 g possesses a minimum reflection loss (RLmin) of-68.03 dB at 15.5 GHz at a thickness of 1.38 mm, while the effective absorption broadband (EAB) and infrared emissivity are found to be 3.3 GHz and 0.63, respectively. Hence, the as-designed rGO/Al/CoFe2O4 composites can be used for both wave absorption and low-infrared emissivity fields, and the proposed strategy is an effective solution for designing bifunctional wave absorption materials.
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