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Creators/Authors contains: "Sun, Wanmei"

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  1. ; ; ; ; ; ; ; ; ; ; et al (, Matter)
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  2. ; ; ; ; ; ; ; ; (, npj 2D Materials and Applications)
    Abstract Ti3C2Txbelongs 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 Ti3C2Txremains challenging as they are prone to chemical degradation by their oxidation to TiO2. In this paper, we examine the oxidation of Ti3C2Txin air, liquid, and solid media via conductivity measurements to assess the shelf life of Ti3C2TxMXenes. The oxidation of Ti3C2Txwas 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. 
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