A New Broadband and Strong Absorption Performance FeCO 3 /RGO Microwave Absorption Nanocomposites

摘要

A novel composite of FeCO 3 nanoparticles, which are wrapped with reduced graphene oxide (RGO), is fabricated using a facile one-spot solvothermal method. The composite consists of a substrate of RGO and FeCO 3 nanoparticles that are embedded in the RGO layers. The experimental results for the FeCO 3 /RGO composite reveal a minimum refection loss (?44.5 dB) at 11.9 GHz when the thickness reaches 2.4 mm. The effective bandwidth is 7.9 GHz between 10.1 and 18 GHz when the refection loss was below ?10 dB. Compared to GO and RGO, this type of composite shows better microwave absorption thanks to improved impedance matching. Overall, this thin and lightweight FeCO 3 /RGO composite is a promising candidate for absorbers that require both strong and broad absorption.