▎ 摘　　要

NOVELTY - Preparing flower-shaped zinc oxide-based composite photocatalytic-bacterial aqueous inner wall paint, comprises (i) dissolving zinc oxide source in ultra-pure water, adding aqueous ammonia solution to control the zinc ammonia complex to precipitate, separating precipitate by filtering, cleaning precipitate by ultra-pure water and absolute ethyl alcohol, drying in a constant temperature drying box to obtain zinc ammonia complex precipitate, adding the solution of 6 mg/ml attached photocatalytic the nano-particle into the zinc-ammonia complex precipitate, preparing precursor solution by 4-5 mol/l water and ultra-pure water, ultrasonically vibrating for 30 minutes to make fully disperse to obtain precursor solution of zinc oxide-based composite photocatalytic, (ii) mechanically stirring and uniformly mixing the composite precursor solution and the aqueous inner wall paint in the reaction kettle to obtain mixed coating, and (iii) synthesizing mixed coating by microwave reaction. USE - The method is useful for preparing flower-shaped zinc oxide-based composite photocatalytic-bacterial aqueous inner wall paint. The paint is useful for indoor decoration. ADVANTAGE - The paint is environmentally friendly and has high safety, specific surface area of the flower-shaped photocatalytic is larger, degradability and bactericidal property in the visible light.