Ion exchange type COF-coated MOF/M composite material and preparation method thereof
A composite material and ion exchange technology, applied in the field of ion exchange COF@MOF/M composite material and its preparation, to achieve the effect of improving catalytic performance and degradation efficiency
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[0023]Example 1
[0024]Synthetic COF1 @ UIO-66 / Ti (IV) Composite
[0025]1) The synthesis of UIO-66:
[0026]DMF (75 mL) and ZrCl were added to 250 ml round bottom flask at room temperature.4(0.4 g,), acetic acid (2.85 mL, 850 mmol) was added to the solution during ultrasonic dispersion of 60 ° C. DMF (25 mL) solution of terephthalic acid (0.282 g) was added to the flask, and finally deionized water (0.125 ml) was added. The mixed solution was tightly capped, 10 min at 60 ° C, and stirring was heated in a temperature of 120 ° C for 24 h. The solution was then cooled to room temperature, and the precipitate was separated by centrifugation and the centrifugation was washed three times, the obtained yellow solid powder is UIO-66, then washed three times with methanol (10 mL), and finally at 60 ° C oven Dry 24 h to get UIO-66 samples.
[0027]2) Synthesis of COF1 @ UIO-66:
[0028]At room temperature, 28 mg of UIO-66 was added to a 1,4-dioxane (2 mL) solution of average trishenylene (8 mg), and the...
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[0031]Example 2
[0032]Synthetic COF2 @ IRMOF-3 / CO composite
[0033]1) IRMOF-3 synthesis
[0034]3.0 mmol of hexahydrate zinc nitrate, 0.85 mmol of 2-amino group was dissolved in 20 ml DMF, ultrasonic dispersion of 2min, and then placed in the reaction kettle, reacting at 110 ° C for 15 h, and naturally cooled after the reaction The product was separated at room temperature, and the product was washed three times with DMF and methanol, dried in a 50 ° C oven, and an IrmOf-3 sample was obtained.
[0035]2) Synthesis of COF2 @ IrmOF-3
[0036]40 mg of IRMOF-3 was dissolved in 1,2,4,5-tetra (4-formylphenyl) benzene (0.022 mmol) 1,4-dioxane (2.5 mL) solution, stirred for 30 min until It becomes uniform, then 1,3,5-three (4-aminophenyl) benzene (TAPB, 0.02 mmol) and 30 μl of acetic acid were added to the ultrasonic dispersion, and the ultrasonic dispersion was continued for 30 min. Then heated at 100 ° C for 48 h, centrifugally, the product was centrifuged, and 3 times were washed 3 times with THF ...
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[0039]Example 3
[0040]Synthetic COF3 @ ZIF-67 / FE
[0041]1) Synthesis of ZIF-67
[0042]At room temperature, 1 mmol of CO (NO32 · 6h2O and 4 mmol 2-methylimidazole were dissolved in 25 ml of ethanol, and the ultrasound was dispersed for 30 min. Then, the two solutions were mixed, reacted in an oil bath at 120 ° C, naturally cooled to room temperature, centrifugal separation product, washed 3 times with ethanol and acetone, and dried in an oven at 85 ° C for 67 product.
[0043]2) Synthesis of COF3 @ ZIF-67
[0044]50 mg of ZIF-67 was dissolved in a 1,4-dioxane (2 ml) solution of terephthal dimethyls (0.02 mmol), and stirred for 1 hour until it became uniform, then add four (4) during ultrasonic dispersion. - Aminophenyl) methane (TAPB, 0.02 mmol) and 18 μl of hydrocyanic acid, continued ultrasonic dispersion for 30 min. Then heated at 150 ° C for 50 h, the product was separated, and the product was centrifuged, and 3 times were washed 3 times with 1,4-dioxane, deionized water and methanol, and...
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