▎ 摘　　要

NOVELTY - Preparing molybdenum trioxide/titanium dioxide/graphene composite with high catalytic degradation activity under visible light, involves dissolving 10-100 mg graphene oxide in 50 mL anhydrous ethanol at room temperature, dispersing for 1 hour, stirring and slowly adding 7 mL tetrabutyl titanate was slowly, stirring for 10 minutes to obtain a uniform suspension, adding 10 mL aqueous solution of ammonium molybdate tetrahydrate (4 g/L) and 5 mL glacial acetic acid dropwise into suspension, and stirring for 1 hour to obtain homogeneous suspension. USE - Method used for preparing molybdenum trioxide/titanium dioxide/graphene composite with high catalytic degradation activity under visible light (claimed). ADVANTAGE - The method offers product with longer life, increased adsorption capacity to organic pollutants and absorption ability for visible light, 3.55 times photo degradation than titanium dioxide nano-particles, and 1.43 times than molybdenum trioxide/titanium dioxide, and higher practical application value. DETAILED DESCRIPTION - Preparing molybdenum trioxide/titanium dioxide/graphene composite with high catalytic degradation activity under visible light, involves dissolving 10-100 mg graphene oxide in 50 mL anhydrous ethanol at room temperature, dispersing for 1 hour, stirring and slowly adding 7 mL tetrabutyl titanate was slowly, stirring for 10 minutes to obtain a uniform suspension, adding 10 mL aqueous solution of ammonium molybdate tetrahydrate (4 g/L) and 5 mL glacial acetic acid dropwise into suspension, and stirring for 1 hour to obtain homogeneous suspension, transferring into a 100 mL high-pressure hydrothermal reactor containing a polytetrafluoroethylene liner, keeping at 180 degrees C temperature for 18-24 hours, and naturally cooling to room temperature, successively treating the product with deionized water and anhydrous ethanol, repeatedly washing, centrifuging and drying at 80 degrees C temperature for 8 hours, heated with 4 degrees C/minute heating rate under nitrogen atmosphere at 450-600 degrees C temperature, and calcining for 2-6 hours to finally obtain the composite, adding 50-100 mg composite to 500 mL 10 mg/L methylene blue aqueous solution, stirring in the dark for 60 minutes to perform photocatalytic degradation experiment for 120 minutes, during the process, removing 5 mL solution every 30 minutes, centrifuging, and collecting the supernatant subjected to absorbance measurement to calculate the degradation effect.