Anchoring 1D nanochain-like Co3O4 on a 2D layered Ti3C2Tx MXene with outstanding electromagnetic absorption

Abstract

Although low dimensional materials have been widely studied in the fields of electromagnetic wave absorption due to their unique structural characteristics, it is a challenge to achieve sufficiently strong absorption performance. Herein, 3D superstructure Ti₃C₂T_x/Co₃O₄ nanochain composites were synthesized through electrostatic self-assembly, in which 1D Co₃O₄ nanochains were anchored on a 2D layered Ti₃C₂T_x surface. As expected, excellent microwave absorption properties can be achieved by adjusting the content of Ti₃C₂T_x in the composites, with a minimum reflection loss (RL_min) of −60.06 dB at 9.52 GHz and a thickness of 2.038 mm. The high microwave absorption performance was attributed to the synergistic effect of multiple losses including polarization loss, conduction loss, and magnetic loss. This work provides a simple and effective way to develop efficient Ti₃C₂T_x -based electromagnetic wave absorbing materials.