▎ 摘　　要

NOVELTY - Composite antibacterial air purifier comprises air purifier has porous material. In the porous material, at least part of the pores has through holes. The air purifier comprises a core-shell structure main body material. The main material of the core-shell structure comprises an inner core and an outer shell. The inner core comprises spinel ferrite. The shell comprises silicon dioxide and titanium dioxide. USE - Used as composite antibacterial air purifier. ADVANTAGE - The purifier has high efficiency and excellent antibacterial and air purifying performance. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing the purifier, comprising (i) mixing the iron salt solution, metal salt solution and citric acid solution uniformly, adjusting the pH value to 7.5-8.0, allowing to stand and aging to obtain wet gel; where the metal salt solution is calcium nitrate solution, calcium chloride solution, magnesium nitrate solution, magnesium chloride solution, magnesium sulfate solution, zinc nitrate solution, zinc chloride solution, zinc sulfate solution, nickel nitrate solution, copper chloride solution, copper nitrate solution, copper sulfate solution; (2) drying the wet gel, calcining and ball milling to obtain spinel ferrite; (3) dispersing the spinel ferrite in absolute ethyl alcohol, adding fatty acid, silicate ester and titanate, heating and refluxing and reacting, filtering, washing and drying to obtain the core-shell structure main material; (4) uniformly mixing the core-shell structure main body material and auxiliary agent and packaging.