Monatomic Ir denitration catalyst based on TiO2 mesocrystals and preparation method thereof

The invention discloses a monatomic Ir denitration catalyst based on TiO2 mesocrystals in the technical field of denitration catalyst preparation. A carrier of the catalyst is mesocrystal TiO2-MC, theactive component is a single-atom Ir metal, and the molar ratio of Ir/TiO2 to MC is 0.02 to 0.08. TiO2-MC is used as a carrier, the modification effect of dopamine hydrochloride or levodopa is utilized, and a redox reaction between Ir and NH2 is combined. According to the TiO2 mesocrystal-based monatomic Ir denitration catalyst and a preparation method thereof, TiO2-MC is used as a carrier, the modification effect of dopamine hydrochloride or levodopa is utilized, the redox reaction between Ir and NH2 is combined, a secondary functionalized platform is obtained on the TiO2 mesocrystal, and by combining the redox effect of Ir and NH2 groups on chloroiridic acid, the catalyst provides good low temperature denitration activity at a temperature of 180-300 DEG C, and the preparation method is mild