Visible-light response type nanometer TiO2/starch composite membrane, preparation method and application thereof

The present invention belongs to the field of agricultural products processing and storage technology and methods, specifically discloses a light-responsive nano TiO2 / starch composite membrane and a preparation method and application. Preparation method of the visible light response type nano TiO2 / starch composite film comprising the steps of: (1) ammonium heptamolybdate nano TiO2 (Degussa, Germany Division points P25 production of nano powder) by mixing, ultrasound, rotary evaporation, drying, milling, after calcining TiO2 nanoparticles having a visible light catalytic activity; (2) esterified corn starch, glycerol and modified nano TiO2, stirring, sonication, heat forming, drying, removing film, doped TiO2 nanoparticles obtain starch composite film; (3) the TiO2 nanoparticles prepared as a suspension and then the composite film is immersed into the suspension, soaking pulled out, and dried, to give a visible response Nanoparticles TiO2 / starch composite film.