▎ 摘　　要

NOVELTY - Graphitic carbon nitride (g-C3N4)-bismuth(III) oxide (Bi2O3) heterojunction photocatalytic degradation and adsorption composite material comprises 24-43 pts. wt. sulfur (S)-doped g-C3N4 supported graphene, 35-45 pts. wt. bismuth(III) nitrate, 0.6-1.2 pts. wt. zinc nitrate, and 22-30 pts. wt. citric acid. USE - The graphitic carbon nitride-bismuth(III) oxide heterojunction photocatalytic degradation and adsorption is used in sewage purification. ADVANTAGE - The graphitic carbon nitride-bismuth(III) oxide heterojunction photocatalytic degradation and adsorption promotes the separation of photo-generated electrons and holes, provides porous graphene with a three-dimensional network structure, has abundant pores and pore structures, and adsorbs small molecules after degradation. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing the g-C3N4-Bi2O3 heterojunction photocatalytic degradation and adsorption composite material, comprising adding 24-43 pts. wt. S-doped g-C3N4 supported graphene, 35-45 pts. wt. bismuth(III) nitrate, and 0.6-1.2 pts. wt. zinc nitrate to the ethylene glycol solvent, after the ultrasonic dispersion is uniform, adding 22-30 pts. wt. citric acid, transferring the solution into the reaction kettle, placing in the heating box of the rotary reaction kettle, heating at 150-180 degrees C, reacting for 10-15 hours, filtering the solution to remove the solvent, washing the solid product with distilled water and ethanol, and fully drying.