▎ 摘　　要

NOVELTY - Sewage processing graphite alkenyl comprises 0.9-9 wt.% cerium oxide and 10 wt.% graphene, and rest is titanium oxide. USE - Sewage processing graphite alkenyl used for ternary composite catalyst. ADVANTAGE - The sewage processing graphite alkenyl has excellent performance and good visible light catalytic activity, reduces forbidden band width and recombination efficiency, and increases light absorption efficiency and electron conduction efficiency. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing sewage processing graphite alkenyl composite catalyst, which involves: (A) taking cerium nitrate hexahydrate, dissolving in absolute ethyl alcohol to prepare solution A; (B) taking tetrabutyl titanate, dissolving in absolute ethylalcohol to prepare solution B; (C) mixing solution A and solution B, and using ammonia water to adjust pH value at 10.0, putting obtained solution into high pressure reaction kettle, reacting for 24 hours at 120 degrees C, cooling reactant naturally to room temperature, filtering and collecting solid product, washing and drying obtained solid product to obtain titanium oxide-cerium oxide complex; (D) taking graphene in absolute ethanol after ultrasonic dispersion, adding titanium oxide-cerium oxide composite powder, stirring for 0.5 hours, transferring to high-pressure reaction kettle, reacting for 24 hours at 120 degrees C, cooling reactant to room temperature, filtering and collecting solid product; and (E) washing and drying obtained solid product to obtain sewage processing graphite alkenyl composite catalyst.