Ti₃C₂T_x MXenes as thin broadband absorbers

Area of Science:

• Materials Science
• Nanotechnology
• Electromagnetism

Background:

• Two-dimensional transition-metal carbides (MXenes) offer abundant interfaces for electromagnetic wave absorption.
• Their thin-film nature makes them promising for lightweight and efficient absorbers.

Purpose of the Study:

• To investigate the microwave dielectric behaviors and electromagnetic absorption properties of Ti3C2Tx MXene.
• To evaluate the potential of Ti3C2Tx MXene as a thin broadband electromagnetic wave absorber.

Main Methods:

• Synthesis of Ti3C2Tx MXene via hydrofluoric acid etching.
• Characterization of multilayered morphology with stacked nanosheets.
• Measurement of microwave dielectric properties and reflection loss.

Main Results:

• Ti3C2Tx MXene exhibits good impedance matching for efficient microwave absorption.
• Achieved an effective absorption bandwidth from 12.4 GHz to 17.1 GHz at a thickness of 1.5 mm.
• Demonstrated a minimum reflection loss of -34.4 dB at 12 GHz with a thickness of 1.7 mm.

Conclusions:

• Ti3C2Tx MXene shows significant potential as a thin broadband electromagnetic wave absorber.
• The material's properties are suitable for applications requiring efficient absorption across the Ku band.