Metal organic frame composite material and preparation method thereof
A metal-organic framework and composite material technology, applied in the field of metal-organic framework composite materials and their preparation, can solve problems such as reducing specific surface area, and achieve the effects of uniform distribution and stable structure
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[0032] Example 1. Preparation of ZIF-8 / Polymer Nanowires
[0033] (1) 400ml, 2mg / ml polymer PEG 113 - b -P4VP 67 After assembling into nanowires in water, add 0.4 ml 1,4-dibromobutane for cross-linking (cross-linking degree is 100%), and stir for 2 days at room temperature. After centrifugation, the solvent was switched to methanol, and the concentration of polymer nanowires was 2 mg / ml.
[0034] (2) Add 10ml polymer nanowire solution, 15ml methanol, and then add 25ml Zn(NO 3 ) 2 ·6H 2 O (250mM) methanol solution, 50ml 2-methylimidazole (250mM) methanol solution. Shake well and let stand at room temperature. A white precipitate was obtained after 24 hours, collected by centrifugation, washed twice with methanol, and dried in a vacuum oven overnight to obtain 0.1025 g of a white solid. The field emission scanning electron microscope results of the product are as follows figure 1 , XRD and nitrogen adsorption and desorption experiments such as figure 2 .
Example Embodiment
[0035] Example 2. Preparation of ZIF-8 / Polymer Nanowires
[0036] The preparation process of polymer nanowires is as in Example 1 (1)
[0037] Add 10ml polymer nanowire solution, 15ml methanol, and then add 25ml Zn(NO 3 ) 2 · 6H 2 O (250mM) methanol solution, 25ml 2-methylimidazole (250mM) methanol solution. Shake well and let stand at room temperature. A white precipitate was obtained after 24 hours, collected by centrifugation, washed twice with methanol, and dried in a vacuum oven overnight to obtain 0.1248 g of a white solid. The field emission scanning electron microscope results of the product are as follows image 3 , Compression strength such as Figure 5 ZIF-8 / nanofiber.
Example Embodiment
[0038] Example 3. Using polymer nanowires as a template, ZIF-8 grows along the polymer nanowires into a ZIF-8 nanowire network
[0039] The preparation process of polymer nanowires is as in Example 1 (1)
[0040] Add 2ml polymer nanowire (2mg / ml) solution, 83ml methanol, and then add 5ml Zn(NO 3 ) 2 ·6H 2 O (250mM) methanol solution, 10ml 2-methylimidazole (250mM) methanol solution. Shake well and let stand at room temperature. After 24h, a white flocculent precipitate was obtained, which was collected by centrifugation, washed twice with methanol, and dried in a vacuum oven overnight to obtain 0.0635g of white solid. The field emission scanning electron microscope results of the product are as follows Figure 4 , Compression strength such as Figure 5 ZIF-8 fiber network.
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