Ultrafiltration membrane with photocatalysis-photothermal synergistic performance as well as preparation method and application of ultrafiltration membrane

The invention belongs to the technical field of photocatalysis-photothermal-membrane separation synergy, and particularly relates to an ultrafiltration membrane with photocatalysis-photothermal synergy performance and a preparation method and application thereof. The preparation method comprises the following steps: a) preparing a Pd-TiO2 photocatalyst by a reduction method; b) preparing a PEDOT polymer through a one-pot method; and c) mixing and dispersing the prepared Pd-TiO2 photocatalyst and PEDOT polymer powder in proportion in a PVDF membrane casting solution, and scraping the membrane casting solution into the membrane by a phase inversion method. The Pd-TiO2/PEDOT photocatalysis-photo-thermal PVDF ultrafiltration membrane prepared by the invention generates active free radicals under the simulated sunlight condition, is used for instantly degrading pollutants in a water body intercepted by a membrane structure and effectively capturing irradiation light, and has a photo-thermal effect and excellent ph