Carbon-doped graphite-phase carbon nitride loaded iron-manganese denitration catalyst as well as preparation method and application thereof

The invention relates to the technical field of denitration catalyst materials, in particular to a carbon-doped graphite-phase carbon nitride loaded iron-manganese denitration catalyst and a preparation method and application thereof, and provides the following scheme: the preparation method comprises the following steps: dissolving ferric nitrate and manganese acetate in water to obtain a first mixed solution; and adding carbon-doped graphite phase carbon nitride into the first mixed solution, stirring, drying to obtain a first product, and calcining the first product at 350-600 DEG C for 2-6 hours to obtain the denitration catalyst, a preparation method of the carbon-doped graphite phase carbon nitride comprises the following steps: dissolving tannic acid in water to obtain a tannic acid solution with the concentration of 5-20 mg/mL, adding the tannic acid solution with the concentration of 5-20 mg/mL into the first mixed solution, stirring, drying to obtain a second product, and calcining the second produc