▎ 摘　　要

NOVELTY - Bismuthmolybdenumoxide/titanium dioxide/reduced graphene oxide composite photocatalyst comprises bismuthmolybdenumoxide, titanium dioxide and reduced graphene oxide in a weight ratio of 15:3:3. USE - Used as bismuthmolybdenumoxide/titanium dioxide/reduced graphene oxide composite photocatalyst. ADVANTAGE - The bismuthmolybdenumoxide/titanium dioxide/reduced graphene oxide composite photocatalyst has high visible light activity, simple preparation process and low production cost. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing bismuthmolybdenumoxide/titanium dioxide/reduced graphene oxide composite photocatalyst comprising (i) dissolving molybdate and bismuth nitrate in a molar ratio of 1:7 in deionized water with volume ratio of 2:1 under magnetic stirring under hydrothermal synthesis, then adding bismuth nitrate solution into the ammonium molybdate solution under magnetic stirring, continuing stirring for 30 minutes, during the mixing process to adjust the pH to 14 and ultrasonic dispersion for 30 minutes, then packing in a teflon stainless steel reactor, the filling degree is 70 wt.% and heating to 160 degrees C, maintaining for 24 hours and natural cooling to room temperature, then washing the precipitate three times with deionized water and ethanol and drying the resultant product at 60 degrees C, (ii) adding isopropanol to the butyl titanate solution, stirring, then adding hydrogen acetate solution having omega is 15 wt.% into the mixed solution, mixing and heating under stirring conditions for 8 hours, then adding the isopropanol with mass ratio of 10: 1 polyethylene glycol-800 and adding the hydrothermal precursor into the lined polytetrafluoroethylene stainless steel reactor, filling about 80 wt.% under hydrothermal reaction at 230 degrees C for 12 hours to obtain titanium dioxide colloidal solution and removing the organic solution to obtain colloid, then heating the colloid at 450 degrees C for 30 minutes using a muffle furnace to obtain the desired product, where the volume ratio between isopropanol and butyl titanate solution is 5:1 and volume ratio between hydrogen acetate solution and the mixed solution is 1:1, (iii) dispersing the oxidized graphite in a mixture of concentrated sulfuric acid and concentrated nitric acid at a volume ratio of 3:1, and refluxing the mixture at 100 degrees C for 8 hours, then removing the acid by filtration through a 0.22 mu m pore sieve to obtain brown solid, then adding the resultant brown solid into polytetrafluoroethylene internal lining stainless steel reaction kettle, carrying out the hydro-thermal reaction for 24 hours under 200 degrees C, high speed centrifuging the obtained suspension liquid and separating to obtain target product, and (iv) dissolving titanium dioxide and reduced graphene oxide in deionized water, while dissolving bismuthmolybdenumoxide in deionized water, then adding polyethylene glycol-800 into the bismuthmolybdenumoxide solution and centrifuging the mixture for 1 hours, washing the precipitate twice with deionized water and absolute ethanol and then drying in a vacuum oven at 70 degrees C to obtain final product, where the volume ratio between titanium dioxide and reduced graphene oxide, bismuthmolybdenumoxide and deionized water is 1:1:2, the mass ratio between bismuthmolybdenumoxide, titanium dioxide, reduced graphene oxide and polyethylene glycol-800 is 15:3:3:1.