Organic functional group COFs/nitrogen vacancy g-C3N4 material as well as preparation method and application thereof

The invention belongs to the technical field of environmental analysis and water treatment, and particularly relates to an organic functional group COFs/nitrogen vacancy g-C3N4 material as well as a preparation method and application thereof. The preparation method comprises the following steps: by taking melamine as a precursor and potassium hydroxide as an etching agent, preparing graphite-phase carbon nitride containing nitrogen vacancies by adopting a one-step calcination method in a nitrogen atmosphere; and preparing the g-C3N4 material with the organic functional group COFs/nitrogen vacancy by taking an organic compound containing the organic functional group, 4, 4 ', 4' '-(1, 3, 5-triazinane-1, 3, 5-triyl) triphenylamine and graphite-phase carbon nitride containing the nitrogen vacancy as raw materials, 1, 2-dichlorobenzene and n-butyl alcohol as solvents and acetic acid as a catalyst and adopting a solvothermal method by adopting an organic compound containing the organic functional group, the 4, 4',