A kind of cross-linked cd-mof composite material loaded with nanometer photocatalyst and its preparation method
A nano-photocatalyst and composite material technology, which is applied in the field of cross-linked CD-MOF composite materials and its preparation, can solve the problems of decreased degradation efficiency, weak immobilization, and unstable composite materials, and achieve low cost and enhanced treatment Efficiency, effect of good degradability
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Embodiment 1
[0036] (1) Solvothermal method:
[0037] Add γ-CD and potassium hydroxide (potassium hydroxide 60 mg) with a mass ratio of 3:1, and 10 mL of deionized water into a single-necked flask, and stir evenly at room temperature for 60 min, then add 0.5 mL of methanol to the single-necked flask, Reaction at 60°C for 12h. Then add 50mL of N,N-dimethyldodecylamine with a concentration of 10mg / mL, stir evenly, and let it stand at room temperature for 12h. After centrifugation, the obtained product is repeatedly washed with isopropanol for 3 times , and finally vacuum-dried at room temperature for 24 hours to obtain cyclodextrin-metal organic framework CD-MOF.
[0038](2) Cross-linking modification method:
[0039] First, add 20mg of CD-MOF, 3g of ethylene glycol glycidyl ether, and 5mL of ethanol into a three-neck flask, mix well, condense and reflux at 70°C for 48h, then pour into ethanol to precipitate crystals, and wash with ethanol repeatedly for 3 times Suction filtration, and fi...
Embodiment 2
[0047] (1) Solvothermal method:
[0048] Gamma-CD and potassium hydroxide (potassium hydroxide 200 mg) with a mass ratio of 7:1, and 5 mL of deionized water were added to a single-necked flask, stirred evenly at room temperature for 60 min, and then 1.5 mL of methanol was added to the single-necked flask, Reaction at 60°C for 10h. Then add 50 mL of octadecyltrimethylammonium chloride with a concentration of 10 mg / mL, stir evenly, and let stand at room temperature for 12 hours. After centrifugation, the obtained product is repeatedly washed 3 times with isopropanol, and finally After vacuum drying at room temperature for 24 h, cyclodextrin-metal organic framework CD-MOF was obtained.
[0049] (2) Cross-linking modification method:
[0050] First, 20 mg of CD-MOF, 3 g of neopentyl glycol diglycidyl ether, and 5 mL of ethanol were added to a three-neck flask, mixed evenly, condensed and refluxed at 70 °C for 48 h, then poured into ethanol to precipitate crystals, and washed wit...
Embodiment 3
[0055] (1) Solvothermal method:
[0056] Add γ-CD and potassium hydroxide (potassium hydroxide 500 mg) with a mass ratio of 10:1, and 20 mL of deionized water into a single-necked flask, and stir evenly at room temperature for 60 min, then add 1.5 mL of methanol to the single-necked flask, Reaction at 70°C for 12h. Then add 70mL of cetyltrimethylammonium bromide with a concentration of 15mg / mL, stir evenly, and let stand at room temperature for 24h. After centrifugation, the product obtained is repeatedly washed 3 times with isopropanol, and finally After vacuum drying at room temperature for 48 h, cyclodextrin-metal organic framework CD-MOF was obtained.
[0057] (2) Cross-linking modification method:
[0058] First, add 30mg of CD-MOF, 3.5g of bisphenol A diglycidyl ether, and 7.5mL of ethanol into a three-neck flask, mix well, condense and reflux at 70°C for 72h, then pour into ethanol to precipitate crystals, and wash with ethanol repeatedly Suction filtration after 3 t...
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