▎ 摘　　要

NOVELTY - The method for preparing antimony phosphate modified graphene-carbon trinitrogen tetra-composite photocatalyst, involves (1) adding 5 g dicyandiamide to crucible, heating in a high temperature tube furnace to produce graphitic carbon nitride, dissolving 0.3 g graphitic carbon nitride in 50 mL deionized water, (2) adding antimony trichloride to obtained solution, stirring uniformly, (3) adding monopotassium phosphate, stirring, (4) adding 25 mL oleic acid, mixing, transferring the stirred solution to reactor of autoclave, centrifuging the fully reacted sample, drying and grinding to obtain final product. USE - Method for preparing antimony phosphate modified graphene-carbon trinitrogen tetra-composite photocatalyst for photocatalytic degradation of pollutant. ADVANTAGE - The method enables preparation of antimony phosphate modified graphene-carbon trinitrogen tetra-composite photocatalyst with excellent photocatalytic performance.