金属有机骨架(MOFs)材料因具有大比表面积、高孔隙率、结构可调等优异性质而受到广泛关注。然而,MOFs材料的实际应用受到水稳定性差及水的竞争配位导致材料吸附性能下降等因素的制约。材料的疏水改性是解决这一问题的重要方法。综述了MOFs材料的疏水改性方法,介绍了提高配位键强度、疏水性有机基团修饰、表面疏水试剂涂覆以及其他疏水改性方法,详述了疏水改性对MOFs材料结构性能的影响,并探讨了不同改性方法的优缺点,指出要根据MOFs材料自身的结构特点、使用目的以及不同改性方法的优缺点选择最优的改性方式。最后,对MOFs材料疏水改性技术的发展及改性MOFs材料在实际中的应用进行了展望。
The metal-organic frameworks (MOFs)have attracted considerable interest due to their special properties such as large surface area,high porosity and adjustable micro-pore size.Unfortunately,some of the materials' industrial applications are limited because of their instability with respect to moisture and sharp decrease of adsorption ability when face to moisture conditions.The hydrophobic modification offers an opportunity to address this challenge.The recent research progress on hydrophobic modification of MOFs was reviewed,with the focused on the modification methods such as use strong coordination bonds,hydrophobic organic group modification,surface hydrophobic coating and other methods.The effects of the modification on the materials structure were detailed description and the relative merits of these methods were probed.In addition,a promising method for improving the research efficiency was to comprehensive consideration of the structure characters of the materials,the intended use of the materials and the advantages and shortcomings of the modification methods.Finally,the hydrophobic modification methods of MOFs and the practical application of MOFs were prospected.
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基金资助
中国石油化工股份有限公司资助项目(118025-4)
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