The effect of Co2+, Cu2+ element ratio on the microwave absorption properties of CoxCu1-xFe2O4/RGO composites

• DOI: 10.1016/j.matlet.2021.129423
• Publication Date: 2021-02-03T00:44:55Z
• Authors: Guoxin Ding; Chuanxin Chen; Hongxu Tai; Zhongfeng Tang; Zhoufeng Wang; Guojun Cheng; Xianglong Wan
• Keywords: Reflection loss

Abstract CoxCu1-xFe2O4/ Reduced graphene oxide (CoxCu1-xFe2O4/RGO) composites were synthesized by a one-pot hydrothermal method. The chemical composition, micromorphology, and electromagnetic parameters were characterized by X-ray diffraction, scanning electron microscope, transmission electron microscope, and vector network analyzer. The microscopic morphology of CoxCu1-xFe2O4/RGO composites consists of nano-sized CoxCu1-xFe2O4 particles that are uniformly grown on the RGO surface. The doping ratio of Co2+ and Cu2+ greatly influences the microwave absorption properties of the composites. The minimum reflection loss value of composites is −58.25 dB at 6.24 GHz with a thickness of 3.17 mm, when the ratio of Co2+ and Cu2+ is 1:1. The effective absorption bandwidth is achieved at 5.60 GHz under 1.64 mm.