▎ 摘　　要

NOVELTY - Asymmetric multifunction heterogeneous composite film comprises a catalytic degradable film layer and a functional adsorption layer. The catalytic degradable film layer has an asymmetric structure. The catalytic degradable film layer comprises a two-dimensional quantum dot composite catalyst. The two-dimensional quantum dot composite catalyst comprises carbon quantum dots, iron-based quantum dot and two-dimensional sheetshaped quantum dot carrier. The size of the carbon quantum dot is 2-10 nm, the size of the iron-based quantum dot is 2-30 nm. USE - The film is useful for treating wastewater treatment comprising methylene blue, orange yellow, methyl violet, crystal violet, methyl blue, bisphenol A, phenol, norfloxacin, enrofloxacin and/or levofloxacin (claimed). ADVANTAGE - The film is economical; and exhibits synergistic effect. The method is simple. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing the film, comprising (i) making two-dimensional sheet-shaped quantum dot carrier, carbon source, iron source, first mixed reaction system of ammonium bicarbonate and first solvent for hydro-thermal reaction to obtain two dimensional quantum dot composite catalyst; (ii) reacting the second mixed reaction system containing the two dimensional quantum dot composite catalyst, polymer material and the second solvent, and using nonsolvent inducing method for film forming treatment to obtain the catalytic degradable film layer; (iii) and placing the catalytic degradable film layer in the mixed solution containing sulfonated dopamine, monomer function third solvent, and performing vibration reaction, so as to form a functional adsorption layer on the surface of the catalytic degradable film layer to obtain asymmetric multifunction heterogeneous composite film. DESCRIPTION OF DRAWING(S) - The drawing shows a symmetrical multifunction schematic diagram of heterogeneous composite film. Two-dimensional sheet quantum dot carrier (1) Iron-based quantum dot (2) Carbon quantum dot (3) Catalytic degradable film layer (4) Functional adsorption layer (5)