▎ 摘　　要

NOVELTY - Preparation of molybdenum-doped titania nanowire/graphene composite involves dissolving 10-200 mg graphene oxide in 30 mL deionized water, ultrasonically-dispersing, adding 1 g titania and ammonium heptamolybdate tetrahydrate, stirring, obtaining a uniform and stable emulsion, adding 30 mL 10-20 M potassium hydroxide solution, stirring, a obtaining uniform suspension, transferring the resultant product to 100 mL high-pressure hot water-containing polytetrafluoroethylene-lined reactor, cooling to room temperature, washing, centrifuging, drying, and calcining. USE - Preparation of molybdenum-doped titania nanowire/graphene composite used as photocatalyst in decomposition of organic pollutant. ADVANTAGE - The method enables simple preparation of molybdenum-doped titania nanowire/graphene composite having excellent catalytic activity under visible light, and catalytic decomposition capability of organic pollutants. The photocatalytic decomposition rate molybdenum-doped titania nanowire/graphene composite is increased from 58% to 128%, and from 43% to 91. The composite has decomposition rate of organic pollutant of 2.28 times that of titania nanowires and 1.91 times than that molybdenum-doped titania nanowires. DETAILED DESCRIPTION - Preparation of molybdenum-doped titania nanowire/graphene composite involves dissolving 10-200 mg graphene oxide in 30 mL deionized water, ultrasonically-dispersing, adding 1 g titania and ammonium heptamolybdate tetrahydrate, stirring, obtaining a uniform and stable emulsion, adding 30 mL 10-20 M potassium hydroxide solution, stirring, obtaining a uniform suspension, transferring the resultant product to 100 mL high-pressure hot water-containing polytetrafluoroethylene-lined reactor, cooling to room temperature, washing resulting product with 0.1 M hydrochloric acid, deionized water and ethanol, centrifuging, drying, and calcining. The photocatalytic decomposition of organic pollutants are carried out by adding 20-40 mg molybdenum-doped titania nanowire/graphene composite photocatalyst to 500 mL, 10 mg/L aqueous solution of methylene blue, stirring in dark for 60 minutes, decomposing, centrifuging the resultant solution, and testing decomposition efficiency of supernatant.