Robust Ti₃C₂T_x MXene foam modified with natural antioxidants for long-term effective electromagnetic interference...

Area of Science:

• Materials Science
• Nanotechnology
• Chemistry

Background:

• MXenes, particularly Ti3C2Tx, are excellent for electromagnetic interference (EMI) shielding due to their lossy dielectric properties.
• The practical application of MXenes is hindered by their susceptibility to degradation from oxygen and water, leading to performance loss.
• Maintaining the integrity of the 2D nanostructure is crucial for sustained EMI shielding effectiveness.

Purpose of the Study:

• To enhance the long-term stability of Ti3C2Tx MXene-based EMI shielding materials.
• To investigate the protective effects of natural antioxidants against MXene degradation.
• To understand the antioxidation mechanisms and their impact on nanostructure evolution.

Main Methods:

• Incorporation of natural antioxidants (melatonin, tea polyphenols, phytic acid) into Ti3C2Tx MXene.
• Evaluation of the degradation rates of the synthesized antioxidant-MXene composites.
• Analysis of the nanostructure evolution and correlation with EMI shielding performance.

Main Results:

• Composites of Ti3C2Tx MXene with natural antioxidants demonstrated a reduced degradation rate.
• The synthesized materials exhibited improved stability in EMI shielding effectiveness (SE).
• The study elucidated the antioxidation mechanisms responsible for preserving the MXene nanostructure.

Conclusions:

• Natural antioxidants effectively mitigate the degradation of Ti3C2Tx MXene.
• The developed antioxidant-protected MXene composites offer enhanced and stable EMI shielding performance.
• This research lays the groundwork for creating robust MXene materials for demanding electromagnetic applications.