| abstract |
The invention belongs to the technical field of photocatalysis, and relates to a preparation method of a graphitic carbon nitride/nitrogen-doped graphene/bismuth vanadate Z-type photocatalyst, comprising dissolving graphitic carbon nitride/nitrogen-doped graphene in N , Ultrasonic dispersion in N-dimethylformamide is uniform, add bismuth vanadate, continue to ultrasonic, stir evenly, and centrifuge; the obtained precipitate is washed with water and ethanol in turn, dried at 60 ° C, and ground to powder to obtain graphite nitride Carbon/nitrogen-doped graphene/bismuth vanadate Z-type photocatalyst. The invention applies the prepared catalyst to photocatalytic efficient degradation of antibiotics in wastewater. The invention achieves the purpose of efficiently catalyzing and degrading antibiotics by using nitrogen-doped graphene as the electron transport medium of the Z-type photocatalyst. In the synthesis process, the compounds are inexpensive, easy to operate, and free from secondary pollution. The problems of traditional binary Z-type catalysts, such as low specific surface area, low conversion efficiency, slow electron transport rate and high photogenerated electron-hole pair recombination rate, are solved. |