Ti3C2Tx/rGO aerogel towards high electromagnetic wave absorption and thermal resistance
Facing the fast development of telecommunication technology, traditional electromagnetic wave absorbing materials are unable to meet the microwave shielding requirements in practical applications. Herein, a Ti3C2Tx MXene/rGO composite aerogel was synthesized by facile hydrothermal and freeze-drying treatment. The prepared aerogel shows a unique porous three-dimensional network structure, which is of great advantage in improving its microwave absorption capability. Mixing Ti3C2Tx and rGO adjusts the impedance match in the absorption process. When the weight ratio of Ti3C2Tx to rGO is 1 : 6, the minimum reflection value (RLm) reaches −53.49 dB at 17.0 GHz (thickness = 2.2 mm), and the corresponding effective absorption bandwidth is 4.4 GHz (from 13.6 GHz to 18.0 GHz). rGO nanosheets of large size could retard the oxidation of Ti3C2Tx to some extent. With its excellent microwave absorption performance, broad effective bandwidth, outstanding thermal resistance, and heat insulating properties, the composite aerogel has a great practical potential.