▎ 摘　　要

NOVELTY - The preparation method of oxide quantum dot modified graphene/titanium oxide photocatalytic material involves adding graphite in anhydrous ethanol, and ultrasonically dispersing to obtain graphene dispersion liquid, taking conductive polymer, dissolving in anhydrous ethanol, and ultrasonically oscillating to obtain conductive polymer dispersion, pouring into graphene dispersion, and stirring to obtain graphene-conductive polymer anhydrous ethanol solution, adding anhydrous ethanol, glacial acetic acid and tetrabutyl titanate, stirring, and dripping ethanol solution. USE - Preparation method of oxide quantum dot modified graphene/titanium oxide photocatalytic material. ADVANTAGE - The method enables preparation of oxide quantum dot modified graphene/titanium oxide photocatalytic material with improved dispersion and surface activity of graphene, and photocatalytic activity. DETAILED DESCRIPTION - The preparation method of oxide quantum dot modified graphene/titanium oxide photocatalytic material involves (1) adding 0.05-0.1 g graphite in 30-70 ml anhydrous ethanol, and ultrasonically dispersing to obtain graphene dispersion liquid, (2) taking 10-12 g conductive polymer, dissolving in 50-60 ml anhydrous ethanol, and ultrasonically oscillating for 30-60 minutes to obtain conductive polymer dispersion, pouring the resulting conductive polymer dispersion into graphene dispersion, and ultrasonically stirring to obtain graphene-conductive polymer anhydrous ethanol solution, (3) adding 15-20 ml anhydrous ethanol, 2-4 ml glacial acetic acid and 8-10 ml tetrabutyl titanate, ultrasonically stirring, dripping graphene-conductive polymer anhydrous ethanol solution obtained in the step (2) to obtain graphene-conductive polymer-butyl titanate-anhydrous ethanol solution, (4) mixing 15-20 ml deionized water, 2-4 ml glacial acetic acid, and 5-10 ml anhydrous ethanol, dripping the obtained graphene-conductive polymer-butyl titanate-anhydrous ethanol solution under ultrasonically stirring condition to obtain graphene-conductive polymer-titanium oxide sol, (5) adding 10-30 ml oxide quantum dot solution into the graphene-conductive polymer-titanium oxide sol, ultrasonically stirring, and aging for more than 24 hours to obtain colloid, drying the colloid, and grinding to obtain oxide quantum dot modified graphene/titanium dioxide photocatalytic material dry gel, where the oxide quantum dot solution is prepared by adding 8-10 g oxide powder to 800-1000 ml water, ultrasonically dispersing for 20-40 minutes, stirring for 20-40 minutes to obtain oxide powder dispersing liquid, and dispersing the oxide powder dispersing liquid under ultrasonic vibration for 1-3 hours, and centrifuging at rate of 8000-10000 rpm, and (6) calcining the modified graphene/titanium dioxide photocatalytic material dry gel at 550-610 degrees C under protective atmosphere for 1-3 hours, naturally cooling, and grinding.