▎ 摘　　要

NOVELTY - Synthesis silver-doped iron(II,III) oxide-silicon carbide/titanium dioxide nanomaterials involves adding ethanol and concentrated ammonia to iron(II,III) oxide ethanol dispersion and ultrasonically processing, adding silicon carbide base material, stirring, filtering, washing precipitate with deionized water and ethanol and filtering, mixing obtained silicon carbide-doped iron(II,III) oxide with silver nitrate, dripping sodium hydroxide solution to obtain first precipitate, washing with deionized water, retaining water of last wash to obtain dispersion of first precipitate, dripping sodium borohydride solution to the dispersion, filtering and washing obtained second precipitate with deionized water to obtain silver-doped iron(II,III) oxide-silicon carbide, and dispersing nano-titania in deionized water, adding 3-amino-propyl-trimethoxy silane (APTES), ultrasonically processing, adding silver-doped iron(II,III) oxide-silicon carbide, stirring, filtering, drying and cooling. USE - Synthesis silver-doped iron(II,III) oxide-silicon carbide/titanium dioxide nanomaterials used in infrared photothermal bacteriostasis (claimed). ADVANTAGE - The prepared silver-doped iron(II,III) oxide-silicon carbide/titanium dioxide nanomaterials have excellent infrared photo-thermal bacteriostasis performance. DETAILED DESCRIPTION - Synthesis silver-doped iron(II,III) oxide-silicon carbide/titanium dioxide nanomaterials involves taking 1 pt. wt. silicon carbide, 0-1 pt. wt. single-arm carbon nanotube and 0-1 pt. wt. graphene and uniformly mixing to obtain silicon carbide base material, taking iron(II,III) oxide magnetic nanoparticles and dispersing in ethanol to obtain iron(II,III) oxide ethanol dispersion, firstly adding ethanol to iron(II,III) oxide ethanol dispersion, adding deionized water and concentrated ammonia solution, mixing, ultrasonically processing for 10-60 minutes, adding the silicon carbide base material, continuously stirring for 5-20 hours at room temperature, filtering, washing the precipitate with deionized water and ethanol and filtering to obtain silicon carbide-doped iron(II,III) oxide, mixing silicon carbide-doped iron(II,III) oxide with silver nitrate solution, dripping sodium hydroxide solution under stirring to obtain first precipitate, washing with deionized water until neutral, retaining water of last wash to obtain a deionized water dispersion of first precipitate, dripping sodium borohydride solution to the dispersion under stirring, filtering to obtain a second precipitate and washing the second precipitate with deionized water until neutral to obtain silver-doped iron(II,III) oxide-silicon carbide, and dispersing nano-titania in deionized water, adding APTES, ultrasonically processing for 20-50 minutes, adding silver-doped iron(II,III) oxide-silicon carbide, stirring for 0.5-2 hours, filtering, drying at 50-70℃ for 0.5-2 hours, drying at 110-140℃ for 0.5-2 hours and cooling to room temperature.