▎ 摘　　要

NOVELTY - Preparing rod-shaped silicon dioxide based compound photocatalytic antibacterial aqueous inner wall paint comprises (1) (1-1) taking the silicon dioxide and dissolving the silicon source in ultrapure water, controlling the precipitation of silicon ammonia complex by adding aqueous ammonia solution, separating the precipitate by suction filtration, fully cleaning the precipitate with ultrapure water and absolute ethanol, and drying it at constant temperature drying box to get silicon ammonia complex precipitate, and (1-2) adding 6 mg/ml solution of photocatalytic nanoparticles attached to the silicon ammonia complex precipitate prepared in the step (1-1), preparing precursor solution of 0.5-2.5 mol/l with ammonia and ultrapure water, ultrasonically vibrating for 30 minutes to make it fully dispersed, and obtaining silicon dioxide-based compound photocatalytic particle precursor solution. USE - The method is useful for preparing rod-shaped silicon dioxide based compound photocatalytic antibacterial aqueous inner wall paint. ADVANTAGE - The method: has larger specific surface area, better antibacterial and inactivation, and excellent mechanical properties; is not easy to fall off; increases the strong adsorption of organics by the acid sites on the surface of the photocatalytic particles; controls the growth of the compound photocatalytic particles; and improves the photocatalytic antibacterial effect. DETAILED DESCRIPTION - Preparing rod-shaped silicon dioxide based compound photocatalytic antibacterial aqueous inner wall paint comprises (1) (1-1) taking the silicon dioxide and dissolving the silicon source in ultrapure water, controlling the precipitation of silamine complex by adding aqueous ammonia solution, separating the precipitate by suction filtration, fully cleaning the precipitate with ultrapure water and absolute ethanol, and drying it at constant temperature drying box to get silicon ammonia complex precipitate, and (1-2) adding 6 mg/ml solution of photocatalytic nanoparticles attached to the silicon ammonia complex precipitate prepared in the step (1-1), preparing precursor solution of 0.5-2.5 mol/l with ammonia and ultrapure water, ultrasonically vibrating for 30 minutes to make it fully dispersed, and obtaining silicon dioxide-based compound photocatalytic particle precursor solution, (2) sequentially mechanically stirring compound precursor solution and the components of the aqueous inner wall paint in the step (1) and mixing in reaction kettle to obtain mixed coating, and (3) performing microwave reaction synthesis of the mixed paint to obtain rod-shaped silicon dioxide-based compound photocatalytic antibacterial aqueous inner wall paint.