Composite separation membrane with electric field sensitivity during Congo red filtration
A separation membrane, Congo red technology, applied in the field of polymer separation membrane surface modification, can solve problems such as a lot of energy consumption, time cost, material stability damage, pH range limitation, etc., to achieve easy industrial application, large dynamic changes Scope, easy operation
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Embodiment 1
[0023] Add 300 ml of deionized water to a clean beaker, then add 0.6 g of dopamine, ultrasonicate and stir for 30 minutes, then put a clean polyethersulfone (PES) membrane into the beaker; then put it into a shaking incubator Shake at a constant temperature of 30°C for 24 hours to obtain a dopamine-coated PES membrane. The function of dopamine is to adsorb enough silver ions in the next experiment. Add 0.1597 g of silver nitrate into a beaker containing 100 ml of deionized water, and stir ultrasonically for 10 minutes to obtain a silver ion solution. The PES membrane coated with dopamine in the previous step was immersed in the silver nitrate solution for 5 minutes to ensure that enough silver ions were adsorbed. The membrane was then removed, and the surface of the membrane was rinsed with deionized water to remove excess silver ions. Add 25g of cobalt sulfate, 50g of sodium pyrophosphate, 45ml of 28% concentrated ammonia water and 1.5g of dimethylaminoborane in sequence in ...
Embodiment 2
[0027] Add 300 ml of deionized water to a clean beaker, then add 0.9 g of dopamine, ultrasonicate and stir for 30 minutes, then put a clean polyethersulfone (PES) membrane into the beaker; then put it into a shaking incubator Shake at a constant temperature of 32°C for 24 hours to obtain a dopamine-coated PES membrane. The function of dopamine is to adsorb enough silver ions in the next experiment. Add 0.1886 g of silver nitrate into a beaker containing 100 ml of deionized water, and stir ultrasonically for 15 minutes to obtain a silver ion solution. The PES membrane coated with dopamine in the previous step was immersed in the silver nitrate solution for 5 minutes to ensure that enough silver ions were adsorbed. The membrane was then removed, and the surface of the membrane was rinsed with deionized water to remove excess silver ions. Add 27g of cobalt sulfate, 48g of sodium pyrophosphate, 43ml of 28% concentrated ammonia and 1.8g of dimethylaminoborane in sequence in a beak...
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