▎ 摘　　要

NOVELTY - Graphene doped bismuth vanadate photocatalyst comprises 40-60 pts. wt. bismuth nitrate, 10-15 pts. wt. ammonium metavanadate, 5-10 pts. wt. acrylic acid-maleic acid copolymer, 10-15 pts. wt. graphene oxide, 1-2 pts. wt. tungsten oxide, 2-3 pts. wt. cerium salt and 5-10 pts. wt. cyclodextrin. USE - Used as graphene doped bismuth vanadate photocatalyst. ADVANTAGE - The photocatalyst has large specific surface area, good porous structure and large number of catalytic active centers, improves the adsorption performance of the catalyst, so that the photo-generated electrons and holes can separated, enlarges absorption of the catalyst in the visible light range and improves utilization of the catalyst for sunlight. The method utilizes raw materials which are widely distributed, is simple and economical, and reduces energy consumption. DETAILED DESCRIPTION - Graphene doped bismuth vanadate photocatalyst comprises 40-60 pts. wt. bismuth nitrate, 10-15 pts. wt. ammonium metavanadate, 5-10 pts. wt. acrylic acid-maleic acid copolymer, 10-15 pts. wt. graphene oxide, 1-2 pts. wt. tungsten oxide, 2-3 pts. wt. cerium salt and 5-10 pts. wt. cyclodextrin. Preparation of the photocatalyst comprises (i) dissolving bismuth nitrate in ethylene glycol to obtain solution A and dissolving ammonium metavanadate in water to obtain solution B, (ii) adding the solution A into the ultrasonic generator, adding the solution B into the solution A, adjusting pH value to 3-4 using aqueous ammonia and continuing ultrasound processing for 30-60 minutes at frequency of 40-60 KHz to obtain the mixed solution, (iii) adding the graphene oxide into the ultrasonic generator, then adding ethanol and dispersing to obtain the graphene dispersion liquid, (iv) adding mixed solution, graphene dispersion, acrylic acid-maleic acid copolymer, tungsten oxide, cerium salt and cyclodextrin into a ball mill, adding proper amount of water and stirring to obtain paste, and (v) washing the paste using distilled water, microwave drying the paste for 1-2 hours at 80-100 degrees C, drying and grinding into powder, placing into a muffle furnace, and baking at the temperature of 300-500 degrees C for 4-6 hours to obtain the photocatalyst.