Preparation,Structure and Characterization of Easily Peelable Nickel-Based Two-Dimensional Metal-Organic Frameworks
The two-dimensional metal-organic framework nanosheets represent a novel class of two-dimensional materials,featuring a more exposed active site,rapid proton or electron transfer,and other advantages than bulk materials.It is a major challenge to prepare two-dimensional metal-organic framework crystalline materials that are easy to peel off into two-dimensional metal-organic nanosheets at present.In this paper,two novel nickel based two-dimensional metal organic framework crystalline materials Ni(C9H3O6)(C4H6N2)2·0.6(C2H5OH)(1)and Ni3(C9H3O6)3(C5H8N2)6·3.25(C2H5OH)(2),were prepared by a simple one-pot method using cheap and less toxic ethanol as the reaction medium,trimesic acid and N-imidazole as common ligands,and characterized and exfoliated.The reaction medium used in the experiment,ethanol,is less toxic,cheap,less polluting to the environment,and can be recycled,which meets the requirements of green chemistry.This shed light on the design and synthesis of crystalline peelable two-dimensional metal-organic framework crystal materials.
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