▎ 摘　　要

NOVELTY - Cerium oxide/graphene quantum dot/graphene series phase carbon nitride composite photocatalytic material, obtained by cerium oxide inlay in graphene phase carbon nitride stratiform structure, nitrogen doped graphene quantum point loading in graphene series phase carbon nitride to form composite photocatalytic material is claimed. USE - Used as cerium oxide/graphene quantum dot/graphene series phase carbon nitride composite photocatalytic material. ADVANTAGE - The material ensures electron-hole separation effect and electronic immigration capacity, has high catalytic activity. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing cerium oxide/graphene quantum dot/graphene series phase carbon nitride composite photocatalytic material comprising (i) providing 12-13 g melamine, 0.2-0.5 g cerium oxalate, adding in agate mortar to grind uniformly, then adding 25 ml capacity in aluminum oxide crucible, and placing in 610-660 degrees C in muffle furnace of constant temperature 2-4 hours, obtaining light yellow and embedded with cerium oxide graphene series phase carbon nitride, (ii) preparing nitrogen doped graphene quantum point compound: adding deionized water in 0.8-0.9 g citric acid and 0.65-0.95 g urea solution of 15-20 ml, after full dissolution, adding in 50 ml reaction kettle, adding in 160-180 degrees C blast drying box of constant temperature for 8-12 hours, cooling, dispersing uniformly to obtain the nitrogen doped graphene quantum dot solution, taking 1-3 ml nitrogen doped graphene quantum dot solution, dispersing in 30 ml deionized water, ultrasonicating to obtain solution, (iii) taking 0.1-0.5 g graphene phase carbon nitride solution in 10-20 ml water, ultrasonicating for 1-5 hours, then adding solution A slowly, lower stirring for 15-20 hours to obtain the turbid liquid B, and (iv) carrying out filtering of turbid liquid B, washing and drying to obtain target composite photocatalytic material.