Oxidation stability of Ti3C2Tx MXene nanosheets in solvents and composite films
Oxidation stability of Ti3C2Tx MXene nanosheets in solvents and composite films
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DOI：
10.1038/s41699-019-0089-3
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发表时间：
2019-02-13
影响因子：
9.7
通讯作者：
Green, Micah J.
中科院分区：
文献类型：
--
作者：
Habib, Touseef;Zhao, Xiaofei;Green, Micah J.
Ti3C2Tx属于MXenes家族，2D材料具有具有吸引人的功能特性组合，适用于电池，超级电容器和应变传感器等应用。然而，基于Ti3C2Tx的器件和功能涂层的制造仍然具有挑战性，因为它们易于通过氧化为TiO 2而发生化学降解。在本文中，我们通过电导率测量研究了Ti（3）C（2）T（x）在空气、液体和固体介质中的氧化，以评估Ti3C2Tx MXenes的保质期。在本研究中使用的所有介质中观察到Ti3C2Tx的氧化，但其在液体介质中最快，在固体介质（包括聚合物基质）中最慢。我们还表明，MXene氧化的常规指标，如颜色和胶体稳定性的变化，并不总是可靠的。最后，我们证明了暴露于紫外光下的氧化加速。
Ti3C2Tx belongs to the family of MXenes, 2D materials with an attractive combination of functional properties suitable for applications such as batteries, supercapacitors, and strain sensors. However, the fabrication of devices and functional coatings based on Ti3C2Tx remains challenging as they are prone to chemical degradation by their oxidation to TiO2. In this paper, we examine the oxidation of Ti(3)C(2)T(x )in air, liquid, and solid media via conductivity measurements to assess the shelf life of Ti3C2Tx MXenes. The oxidation of Ti3C2Tx was observed in all the media used in this study, but it is fastest in liquid media and slowest in solid media (including polymer matrices). We also show that the conventional indicators of MXene oxidation, such as changes in color and colloidal stability, are not always reliable. Finally, we demonstrate the acceleration of oxidation under exposure to UV light.