▎ 摘　　要

NOVELTY - Preparing high-concentration molybdenum-doped tungsten trioxide photo-catalytic nano-material, comprises e.g. placing the tungsten ore in a crusher to crush to obtain tungsten ore particles, sieving the tungsten ore particles, crushing and sieving the particles with grain diameter more than 5 mm, placing the sieved tungsten ore particles in a ball mill for ball milling, stirring the material after ball milling, drying under the environment of 40-80 degrees C to obtain the tungsten ore powder with grain diameter less than 1 mm, mixing the tungsten ore powder with potassium hydroxide solution, stirring for 4-5 minutes, allowing to stand, removing the bottom precipitate to obtain supernatant, dripping sulfuric acid to the supernatant to adjust the pH value of the supernatant to 3-3.2, heating the solution after adjusting pH, heating for 8-20 minutes, filtering the heated solution to obtain tungsten hydrolysis product, using tungsten hydrolysis product to prepare tungsten trioxide. USE - The method is useful for preparing high-concentration molybdenum-doped tungsten trioxide photo-catalytic nano-material. ADVANTAGE - The method: reduces the electron hole composite rate in the raw tungsten trioxide material; enhances the absorption width of the solar spectrum in the photocatalytic reaction; improves the utilization rate of the photocatalytic light; improves the efficiency photocatalytic the degradation organic matter; improves the photocatalytic activity of the catalyst by changing the structure of the catalyst; and utilizes the visible light, and expands the light response range of the tungsten trioxide. DETAILED DESCRIPTION - Preparing high-concentration molybdenum-doped tungsten trioxide photo-catalytic nano-material, comprises (1) placing the tungsten ore in a crusher to crush to obtain tungsten ore particles, sieving the tungsten ore particles, crushing and sieving the particles with grain diameter more than 5 mm, placing the sieved tungsten ore particles in a ball mill for ball milling, stirring the material after ball milling, drying under the environment of 40-80 degrees C to obtain the tungsten ore powder with grain diameter less than 1 mm, (2) mixing the tungsten ore powder with potassium hydroxide solution, stirring for 4-5 minutes, allowing to stand, removing the bottom precipitate to obtain supernatant, dripping sulfuric acid to the supernatant to adjust the pH value of the supernatant to 3-3.2, heating the solution after adjusting pH, heating for 8-20 minutes, filtering the heated solution to obtain tungsten hydrolysis product, using tungsten hydrolysis product to prepare tungsten trioxide, (3) taking sodium molybdate powder and dissolving the sodium molybdate powder in de-ionized water to obtain sodium molybdate solution, adding the prepared tungsten trioxide into the sodium molybdate solution, stirring uniformly, dropping nitric acid solution, stirring uniformly to obtain the mixed solution, and (4) placing the mixed solution in a hydrothermal kettle coated with polytetrafluoroethylene lining, setting the temperature at 80-95 degrees C for heating, finishing the heating, cooling to room temperature, washing the product, drying to obtain molybdenum-tungsten trioxide mixed material, ball milling the molybdenum-tungsten trioxide mixed material to obtain molybdenum-tungsten trioxide powder, (5) crushing the sheet graphite to obtain graphite particles, placing graphite particles in the reaction kettle, setting the temperature at 700-800 degrees C for high temperature oxidation to obtain the graphite oxide particles, performing microwave irradiation to the graphite oxide particles to obtain the reaction product, collecting the reaction product, removing impurities to obtain graphene, (6) mixing the graphene with ferrous sulfate solution, continuously stirring for 10-30 minutes, stirring, adding sodium borohydride, continuously stirring in inert atmosphere for 10-15 minutes, separating solid substance, obtaining graphene nano material, fully grinding the prepared graphene nano material to obtain the graphene powder, (7) mixing the molybdenum-tungsten trioxide powder and graphene powder, ultrasonically dispersing in the glycol solution to obtain the mixed solution, adding 12 mol/l of hydrochloric acid in the mixed solution, stirring and heating, heating, allowing to stand and cooling, (8) cooling to room temperature to precipitate, using clean water to wash the precipitate, placing the cleaned precipitate in the drying box to dry to obtain the high concentration molybdenum doped tungsten trioxide photo-catalytic nano material. An INDEPENDENT CLAIM is also included for high-concentration molybdenum-doped tungsten trioxide photo-catalytic nano-material comprising 8-12 pts. wt. tungsten trioxide, 6-7 pts. wt. sodium molybdate, 2-4 pts. wt. graphite, 23-30 pts. wt. deionized water, 8-11 pts. wt. hydrochloric acid, 4-5 pts. wt. nitric acid, and 5-8 pts. wt. ethylene glycol. DESCRIPTION OF DRAWING(S) - The drawing shows a flow chart illustrating the method for preparing high-concentration molybdenum-doped tungsten trioxide photo-catalytic nano-material (Drawing includes non-English language text).