Facile Preparation of Ti₃C₂T_x MXene@Zn–Mn Ferrite Composites with Enhanced Microwave Absorption Performance

With the development of the fifth-generation (5G) communication technology, electromagnetic wave pollution in the military and civilian fields is becoming increasingly severe. To achieve highly efficient electromagnetic wave absorption (EMA), electromagnetic wave absorbing materials must be studied, including composites with both electric and magnetic loss mechanisms. Here, Ti3C2Tx MXene@Zn–Mn ferrite (MXene@ZMF) composites were prepared by using a facile coprecipitation method incorporating magnetic ZMF nanoparticles coated onto the surface or inserted into the multilayers of MXene. The dielectric and magnetic losses and good impedance matching of these MXene@ZMF composites enhanced microwave absorption. The microwave absorption mechanism was established. The composite with 80 wt % MXene (denoted as MXene@ZMF-80%) exhibits enhanced EMA performance with a minimum reflection loss (RLmin) of −69.86 dB at a frequency of 16.93 GHz and a maximum effective absorption bandwidth of 2.32 GHz. Therefore, this work provides a simple method for the design and fabrication of hybrid microwave absorbers employing dielectric and magnetic losses, beneficial for solving electromagnetic pollution problems.