ZIF-8-loaded polyvinylidene fluoride nano-fiber membrane as well as preparation method and application thereof
A polyvinylidene fluoride, ZIF-8 technology, applied in the direction of fiber type, fiber treatment, chemical instruments and methods, etc., can solve the problems of difficult recycling, secondary pollution, etc., and achieve resource saving, low cost, and simple and practical process methods Effect
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Embodiment 1
[0032] (1) Measure 3.5mL of dimethylacetamide and 5.9mL of acetone, mix and stir for 0.5h, then add 0.8g of polyvinylidene fluoride, heat and stir at 50°C for 10h to obtain a spinning solution;
[0033] (2) Place the spinning solution prepared in step (1) in an electrospinning device for electrospinning, the advancing speed of the spinning solution is 0.035mm / min, the voltage is 13kV, the receiving distance is 15cm, and the temperature is 24 °C, the relative humidity is 20%, to obtain a polyvinylidene fluoride electrospun membrane;
[0034] (3) Weigh 0.3g of zinc nitrate hexahydrate and 0.08g of 2-methylimidazole and dissolve them in 20mL of methanol respectively to obtain solution 1 and solution 2, then mix and stir solutions 1 and 2 for 10min to obtain solution 3, in solution 3 Put 2g of the polyvinylidene fluoride electrospun membrane prepared in step (2), heat at 40°C for 5h, and wash with methanol to obtain a once-grown ZIF-8 / polyvinylidene fluoride composite nanofiber me...
Embodiment 2
[0038] (1) Measure 2.5mL of dimethylacetamide and 3.4mL of acetone, mix and stir for 1h, then add 0.99g of polyvinylidene fluoride, heat and stir at 60°C for 8h to obtain a spinning solution;
[0039](2) Place the spinning solution prepared in step (1) in an electrospinning device for electrospinning, the advancing speed of the spinning solution is 0.05mm / min, the voltage is 15kV, the receiving distance is 20cm, and the temperature is 22 °C, the relative humidity is 25%, to obtain a polyvinylidene fluoride electrospun membrane;
[0040] (3) Weighing 0.6g of zinc nitrate hexahydrate and 0.16g of 2-methylimidazole were dissolved in 20mL of methanol respectively to obtain solution 1 and solution 2, then mixed and stirred solution 1 and solution for 20min to obtain solution 3, in solution 3 Put 2g of the polyvinylidene fluoride electrospun membrane prepared in step (2), heat at 50°C for 3h, and wash with methanol to obtain a once-grown ZIF-8 / polyvinylidene fluoride composite nanof...
Embodiment 3
[0044] (1) Measure 3.0 mL of dimethylacetamide and 3.8 mL of acetone, mix and stir for 2 hours, then add 1.5 g of polyvinylidene fluoride, heat and stir at 70°C for 5 hours to obtain a spinning solution;
[0045] (2) Place the spinning solution prepared in step (1) in an electrospinning device for electrospinning, the advancing speed of the spinning solution is 0.065mm / min, the voltage is 18kV, the receiving distance is 20cm, and the temperature is 24 °C, the relative humidity is 29%, and the polyvinylidene fluoride electrospun membrane is obtained;
[0046] (3) Weigh 1.2g of zinc nitrate hexahydrate and 0.32g of 2-methylimidazole, dissolve them in 20mL methanol respectively to obtain solution 1 and solution 2, then mix and stir solution 1 and solution 2 for 30min to obtain solution 3, in solution 3 Put 2g of the polyvinylidene fluoride electrospun membrane prepared by step (2), heat at 60°C for 2h, and wash with methanol to obtain a once-grown ZIF-8 / polyvinylidene fluoride co...
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