Synthesis of nanospherical CoFe2O4/Ti3C2Tx MXene composites with enhanced microwave absorbing performance

A facile approach was proposed to fabricate the nanospherical CoFe2O4/Ti3C2Tx composites. The composite exhibited an excellent microwave absorption performance, which can be attributed to the synergism of dielectric loss, magnetic loss, multiple reflection and conductive loss from the unique structure and impedance matching. As a result, the minimum reflection loss (RLmin) was - 77.2 dB at 8.0 GHz for the CoFe2O4 / Ti3C2Tx composite with 80 wt% CoFe2O4 and the matching thickness of 2.6 mm, which demonstrated that the CoFe2O4/Ti3C2Tx composites are favorable as promising microwave absorbents. [Display omitted] •The nanospherical CoFe2O4/Ti3C2Tx MXene composites were facilely fabricated.•The RLmin of - 77.2 dB at 8.0 GHz for the CoFe2O4 / Ti3C2Tx composite with 80 wt% CoFe2O4 and the matching thickness of 2.6 mm were realized.•The dielectric loss, magnetic loss and preferable impedance matching properties were important and synergistic factors for the excellent EM wave absorption of CoFe2O4 / Ti3C2Tx composites.