▎ 摘　　要

NOVELTY - Photocatalytic coating material comprises cotton fabric and photocatalytic material coated on the surface of cotton fabric. The mass ratio of the cotton fabric and photocatalytic material is 100: (0.001-20). The cotton fabric and the photocatalytic material are combined by action modes of adhesive, electrostatic force, hydrogen bond, and/or pi-pi conjugation. USE - Used as photocatalytic coating material. ADVANTAGE - The material realizes the recyclability and reuse of the powder catalytic material, and effectively avoids the agglomeration of the powder photocatalytic material. The method is simple and easy to realize large-scale production of the photocatalytic coating material, and does not involve harsh reaction conditions. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing the coating material, comprising (a) soaking the cotton fabric in deionized water until the absorption is saturated, and taking out and drying to obtain the activated cotton fabric; and (b) adding 0.001-20 pts. wt. single-component photocatalyst into 100 pts. wt. solvents, stirring and/or ultrasonically dispersing, adjusting the pH value of the solution to 1-14, preparing the photocatalytic coating solution, preparing at least one of photocatalytic coating liquids by adding different photocatalysts, soaking the activated cotton fabric in the photocatalytic coating solution A until the absorption is saturated, taking out, rinsing with a solvent, drying, and soaking in the photocatalytic coating solution B, soaking until the absorption is saturated, taking out, rinsing with a solvent and drying to obtain a multi-component photocatalytic coating material with a self-assembled layer I, repeating the above steps 0 times or more, drying to obtain a multi-component photocatalytic coating material with a self-assembled layer number of m, where m is an integer greater than or equal to 1, and the photocatalytic coating liquid A and the photocatalytic coating liquid B are different photocatalytic coating liquids, the photocatalytic coating liquids A1, A2...Am used in the preparation of m self-assembled layers are the same or different or not identical, and the photocatalytic coating liquids B1, B2 used in the preparation of m self-assembled layers ...Bm is the same or different or not exactly the same when m greater than or equal to 2, or adding the modifier into the solvent to obtain a modified solution, soaking the activated cotton fabric soaked in the photocatalytic coating liquid C to absorb saturation, taking out, rinsing with a solvent, drying, and soaking in the modified solution, soaking until the absorption is saturated, taking out, rinsing with solvent, drying to obtain a single-component photocatalytic coating material with a self-assembled layer I, using the photocatalytic coating liquid C and the modified solution, repeat the above steps 0 times and more, and drying to obtain a single-component photocatalytic coating material with a self-assembled layer number of n, where the n is an integer greater than or equal to 1.