Preparation method of anti-pollution membrane

The invention discloses a preparation method of an anti-pollution membrane. The preparation method comprises the following steps: (1) preparing an NPC-Ag composite material; and (2) blending the NPC-Ag composite material into a membrane material to form the anti-pollution membrane. The NPC-Ag is blended into the membrane material, so that the binding force of nano Ag in the membrane material can be improved, the nano Ag is prevented from falling off, meanwhile, the Ag can be uniformly distributed on the surface of the membrane material by using the NPC, the agglomeration phenomenon is prevented, and the anti-pollution performance of the membrane material is improved. According to the manufacturing method of the NPC-Ag mixture, Ag and NPC can be mixed more uniformly, meanwhile, Ag can be efficiently and stably reduced towards Ag through irradiation of a high-pressure mercury lamp, and particle size growth in the reduction process is effectively controlled. According to the preparation method disclosed by th