▎ 摘　　要

NOVELTY - The method comprises (a) mixing coconut shell activated carbon, single-arm carbon nanotubes, and graphene to obtain carbon base material, (b) dispersing iron oxide magnetic nanoparticles in ethanol, adding ethanol into the iron oxide ethanol dispersion, adding deionized water and concentrated ammonia solution, mixing, adding the carbon base material, and stirring, filtering, washing the precipitate with deionized water and ethanol, and filtering, (c) mixing iron oxide-carbon and silver nitrate solution, dropping sodium hydroxide solution under stirring, washing with deionized water, dropping sodium borohydride solution into the dispersion and filtering, and washing precipitate to neutrality with deionized water, and (d) mixing butyl titanate with absolute ethanol, and mixing absolute ethanol, glacial acetic acid and deionized water, stirring, forming a sol, adding silver-iron oxide-carbon nanomaterials, mixing and aging, drying, heating under the protection of argon, and cooling. USE - The silver-iron oxide-carbon/titanium-oxide nanomaterial is useful for removing formaldehyde and benzene under photocatalysis (claimed). ADVANTAGE - The nano-material can remove formaldehyde and benzene substance under the visible photocatalytic of the window glass after filtering, and has good application prospect.