Metal-organic framework material, preparation method and application thereof
An organic framework and metal technology, which is applied in the preparation of metal-organic framework materials and the field of metal-organic framework materials, can solve the problems of poor biocompatibility, poor antibacterial performance, and inability to be injected or taken internally by the human body. , to achieve improved biocompatibility, long-lasting antibacterial effect, and good antibacterial performance
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[0030] In a second aspect, the present invention provides a method for preparing a metal-organic framework material, comprising the following steps:
[0031] (1) provide respectively the mixed aqueous solution containing copper ion and zinc ion and the solution containing organic ligand and organic solvent;
[0032] (2) Mix a mixed aqueous solution containing copper ions and zinc ions and a solution containing an organic ligand and an organic solvent, react at 60-90° C. for 4-8 days, separate solid and liquid, wash, and dry to obtain the metal- organic framework materials;
[0033] Wherein, the organic ligand is 2,5-pydc, GA, NA or AD.
[0034] The inventors of the present invention found during the research process that the copper-organic framework material cannot be prepared by mixing an aqueous solution containing copper ions with an organic solvent containing organic ligands and heating. The present invention prepares the copper-zinc-organic framework material by heating...
Embodiment 1
[0049] (1) use copper nitrate and zinc nitrate to configure copper ion concentration to be 0.005mol / L, the mixed aqueous solution of zinc ion concentration to be 0.003mol / L;
[0050] The N,N-dimethylformamide solution of 2,5-pyridinedicarboxylic acid with a configuration concentration of 0.003mol / L;
[0051] (2) The above 30mL mixed aqueous solution and the above 10mL N,N-dimethylformamide solution containing 2,5-pyridinedicarboxylic acid are placed in a reaction kettle, mixed completely and put into an oven, and the heating temperature is set to 75°C , the heating time is 6 days, after the reaction is completed, it is cooled to room temperature, filtered, and the solid particles obtained after filtration are washed with ethanol, and dried at 60°C to obtain a metal-organic framework material, whose chemical formula is: [Zn 4 (2,5-pydc) 4 (H 2 O) 4 Cu 8 ]·4H 2 O, XRD picture as figure 1 shown.
Embodiment 2
[0053] (1) Use copper acetate, zinc chloride and zinc nitrate to configure a mixed aqueous solution with a copper ion concentration of 0.0005mol / L and a zinc ion concentration of 0.005mol / L, wherein the molar ratio of zinc chloride and zinc nitrate is 1:1 ;
[0054] The N,N-diethylformamide solution of the glutamic acid that configuration concentration is 0.0016mol / L;
[0055] (2) The above 40mL mixed aqueous solution and the above 25mL N,N-dimethylacetamide solution with glutamic acid are placed in a reaction kettle, mixed completely and put into an oven. The heating temperature is set to 60°C, and the heating time is 8 day, after the reaction was completed, it was cooled to room temperature, filtered, and the solid particles obtained after filtration were washed with propanol, and dried at 60°C to obtain a metal-organic framework material with the chemical formula: [Zn 4 (GA) 4 (H 2 O) 4 Cu 8.5 ]·4H 2 O.
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