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Stabilizing MXene suspension with polyhydric alcohols

Journal of Materials Science & Technology 2023年第34期165卷 219-224页

作者： Renfei Cheng Junchao Wang Tao Hu Yiming Zhao Yan Liang Xiaohui Wang Yanchun Zhou Shenyang National Laboratory for Materials Science Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China School of Materials Science and Engineering University of Science and Technology of ChinaShenyang 110016China Institute of Materials Science and Devices School of Materials Science and EngineeringSuzhou University of Science and TechnologySuzhou 215009China School of Materials Science and Engineering Zhengzhou UniversityZhengzhou 450001China

MXenes have promises in myriad applications by virtue of two-dimensional nature and adjustable functional *** achieve the applications,MXenes are always first prepared in the form of aqueous ***,fast degradation caused by the attack of dissolved oxygen and water molecules is the main obstacle to the application of *** has come to light that the degradation preferentially takes place at defective sites and edges where defects *** tackle this problem and increase the stability,herein,using Ti_(3)C_(2)T_(x)MXene as a model material,we report a simple yet efficient strategy for long term storage of MXene suspension by introducing glycerol,a typical polyhydric *** effectiveness of the strategy is evidenced by structural compositional and morphological *** protects the defective sites of MXene flakes through restricting water and/or oxygen molecules from reactive *** is supported by ab initio molecular dynamics simulations that form hydrogen bonds between MXene and glycerol molecules just over defective *** this mechanism,other polyhydric alcohols,such as ethylene glycol and propylene glycol,are also effective in stabilizing Ti_(3)C_(2)T_(x)MXene *** strategy based on polyhydric alcohols has the potential to be extended to other MXenes,solving the most urgent challenge in the field of MXene engineering.

关键词： MXene Stability Polyhydric alcohols Glycerol ethylene glycol and propylene glycol

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