| abstract |
The invention provides a preparation method of a hybrid hydrogel filtration membrane and an application thereof, the preparation method comprising the following steps: firstly modifying and modifying the surface of the nano TiO 2 with an acidic functional group modifier, and the inorganic nanoparticles TiO 2 is modified by carboxylation, sulfonation or phosphorylation to improve its dispersibility in aqueous solution, and then the modified titanium dioxide is blended with sodium alginate to form a hybrid hydrogel by Ca 2+ ion crosslinking. Filter membrane. On the one hand, the immobilization of hydrogel reduces the loss of modified titanium dioxide. On the other hand, the modified titanium dioxide can degrade the dye adsorbed on the surface of the membrane under ultraviolet light, improve the dye removal rate, reduce membrane fouling, and achieve self-cleaning of the membrane. ,Extended service life. |