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Abstract：
MXenes have been proven to be outstanding lossy phase of advanced electromagnetic interference (EMI) shielding materials. However, their poor tolerance to oxygen and water results in fast degradation of the pristine two-dimensional (2D) nanostructure and fading of the functional performance. Herein, in this research, natural antioxidants (e.g., melatonin, tea polyphenols, and phytic acid) were employed to protect the Ti3C2Tx MXene from its degradation in order to achieve a long-term stability of the EMI shielding performance. The results showed that the synthesized composites comprised of antioxidants and Ti3C2Tx exhibited a decelerating degradation rate resulting in an improved EMI shielding effective (SE) stability. The antioxidation mechanism of the applied antioxidants is discussed with respect to the nanostructure evolution of the Ti3C2Tx MXene. This work contributes to the basic foundations for the further development of advanced MXenes for stable applications in the EM field.
摘要：
MXenes已被证明是先进的电磁干扰（EMI）屏蔽材料的出色损耗阶段。然而,它们对氧和水的耐受性差导致原始二维(2D)纳米结构的快速降解和功能性能的衰减。在这里，在这项研究中，天然抗氧化剂(例如，褪黑激素,茶多酚,和植酸）用于保护Ti3C2TxMXene免受其降解，以实现EMI屏蔽性能的长期稳定性。结果表明，由抗氧化剂和Ti3C2Tx组成的合成复合材料表现出减速的降解速率，从而改善了EMI屏蔽有效（SE）稳定性。关于Ti3C2TxMXene的纳米结构演变，讨论了所应用抗氧化剂的抗氧化机理。这项工作为进一步开发用于EM领域稳定应用的先进MXenes奠定了基础。
