▎ 摘　　要

NOVELTY - Preparing silver (Ag)-ferric oxide (Fe3O4)-silicon carbide (SiC)/titanium dioxide (TiO2) nano material involves taking 1 pts. wt. SiC, 0-1 pts. wt. single-arm carbon nano-tube, 0-1 pts. wt. graphene; mixing uniformly to obtain silicon carbide substrate material B; taking Fe3O4 magnetic nano particles, dispersing in ethanol to obtain Fe3O4 ethanol dispersion; adding ethanol in Fe3O4 ethanol dispersion, then adding de-ionized water and concentrated ammonia solution; mixing uniformly, ultrasonicating for 10-60 minutes; adding silicon carbide substrate material, then continuously stirring for 5-20 hours at room temperature; filtering, washing precipitate with de-ionized water and ethanol respectively; obtaining Fe3O4-SiC; mixing Fe3O4-SiC with silver nitrate (AgNO3) solution. USE - Method for preparing silver-ferric oxide-silicon carbide/titanium dioxide nano material used for infrared photo-thermal bacteriostasis (claimed). ADVANTAGE - The method for preparing silver-ferric oxide-silicon carbide-titanium dioxide nano material has excellent infrared photo-thermal bacteriostatic performance. DETAILED DESCRIPTION - Preparing silver (Ag)-ferric oxide (Fe3O4)-silicon carbide (SiC)/titanium dioxide (TiO2) nano material involves taking 1 pts. wt. SiC, 0-1 pts. wt. single-arm carbon nano-tube, 0-1 pts. wt. graphene; mixing uniformly to obtain silicon carbide substrate material B; taking Fe3O4 magnetic nano particles, dispersing in ethanol to obtain Fe3O4 ethanol dispersion; adding ethanol in Fe3O4 ethanol dispersion, then adding de-ionized water and concentrated ammonia solution; mixing uniformly, ultrasonicating for 10-60 minutes; adding silicon carbide substrate material, then continuously stirring for 5-20 hours at room temperature; filtering, washing precipitate with de-ionized water and ethanol respectively; obtaining Fe3O4-SiC; mixing Fe3O4-SiC with silver nitrate (AgNO3) solution; dropping sodium hydroxide solution under stirring; obtaining precipitate; using de-ionized water to wash to neutral, then last washing of water is retained, obtaining precipitate a of de-ionized water dispersion, dropping sodium borohydride solution in dispersion solution under stirring; filtering, obtaining precipitate b; washing precipitate b with de-ionized water to neutral; obtaining Ag-Fe3O4-SiC-TiO2 nano material.