Hierarchical pore ZIF-8 material as well as preparation method and application thereof
A ZIF-8, multi-level pore technology, applied in chemical instruments and methods, catalytic reactions, organic compounds/hydrides/coordination complex catalysts, etc., can solve the limited types of templates, material structure collapse, template residues, etc. problem, to achieve the effect of simple method, mild synthesis conditions and mild conditions
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Embodiment 1
[0045] Dissolve 0.081g ZnO in 1ml deionized water and stir for 10 minutes to obtain suspension A; 0.220g Zn(CH 3 CO 2 ) 2 2H 2 O was dissolved in 2ml of DMF-deionized water (v / v=1:1) solution, ultrasonicated for 1 minute to obtain solution B; solution B was mixed with suspension A, reacted and stirred at room temperature for 20 hours to obtain mixed solution C; Dissolve 0.476g of 2-methylimidazole in 9ml of DMF and stir for 10 minutes to obtain solution D; add 0.364g of 3-sulfopropyl tetradecyl dimethyl betaine to solution D and continue stirring for 10 minutes to obtain solution E; mix Solution C and solution E were mixed and stirred at room temperature, reacted for 45 seconds and then filtered with suction. The obtained product was washed with DMF and deionized water, purified with methanol for 24 hours, filtered with suction, and dried in vacuum at 100°C for 10 hours to obtain a multi-stage Pore ZIF-8 material, labeled as sample A1.
Embodiment 2
[0047] Dissolve 0.081g ZnO in 1ml deionized water and stir for 11 minutes to obtain suspension A; 0.220g Zn(CH 3 CO 2 ) 2 2H 2 O was dissolved in 2ml of DMF-deionized water (v / v=1:1) solution, ultrasonicated for 1 minute to obtain solution B; solution B was mixed with suspension A, reacted and stirred at room temperature for 20 hours to obtain mixed solution C; Dissolve 0.476g of 2-methylimidazole in 9ml of DMF and stir for 10 minutes to obtain solution D; add 0.045g of 3-sulfopropyl tetradecyl dimethyl betaine to solution D and continue stirring for 10 minutes to obtain solution E; mix Solution C and solution E were mixed and stirred at room temperature, reacted for 60 seconds and then suction filtered. The obtained product was washed with DMF and deionized water, then purified by methanol for 24 hours, suction filtered, and vacuum-dried at 100°C for 10 hours to obtain a multi-stage Pore ZIF-8 material, labeled sample A2.
Embodiment 3
[0049] Dissolve 0.081g ZnO in 1ml deionized water and stir for 12 minutes to obtain suspension A; 0.220g Zn(CH 3 CO 2 ) 2 2H 2 O was dissolved in 2ml of DMF-deionized water (v / v=1:1) solution, ultrasonicated for 3 minutes to obtain solution B; solution B was mixed with suspension A, reacted and stirred at room temperature for 22 hours to obtain mixed solution C; Dissolve 0.500g of 2-methylimidazole in 9ml of DMF and stir for 12 minutes to obtain solution D; add 0.182g of 3-sulfopropyl tetradecyl dimethyl betaine to solution D and continue stirring for 12 minutes to obtain solution E; mix Solution C and Solution E were mixed and stirred at room temperature, reacted for 120 seconds, and filtered with suction. The obtained product was washed with DMF and deionized water, purified with methanol for 48 hours, filtered with suction, and dried in vacuum at 110°C for 11 hours to obtain a multi-stage Pore ZIF-8 material, labeled sample A3.
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