▎ 摘　　要

NOVELTY - Preparation of iron-doped graphite-phase carbon nitride/graphene multifunctional nanocomposite material comprises taking urea and ferric chloride hexahydrate dissolved in absolute ethanol, stirring, water bath evaporating, calcining at a certain temperature in a muffle furnace, naturally cooling to room temperature, grinding to uniform powder shape, washing using ethanol for 1-3 times, water cleaning for 1-3 times, secondary calcining, heat stripping under argon atmosphere, naturally cooling, and grinding; and taking graphene and absolute ethanol, dispersing for 1-3 hours at 400 W, adding product in first step, hydrothermal reacting, centrifugal separating, washing, and drying at 80-100 degrees C. USE - The method is used for preparing iron-doped graphite-phase carbon nitride/graphene multifunctional nanocomposite material is used as catalyst for processing organic waste water (claimed). ADVANTAGE - The nanocomposite material reduces photo-generated electron-hole recombination rate, improves light response ability, and has significant synergistic degradation effect similar to Fenton oxidation/visible light photocatalytic oxidation. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for: (1) iron-doped graphite-phase carbon nitride/graphene multifunctional nanocomposite material; and (2) use method of composite material comprising adding composite material as catalyst to solution containing organic pollutant, dark absorbing, irradiating using xenon lamplight source at 300 W, UV-filtering, adding aqueous hydrogen peroxide, and degrading.