Fe-Mn ultrathin transition metal oxide nanosheet low-temperature SCR denitration catalyst and preparation method thereof

The invention relates to a Fe-Mn ultrathin transition metal oxide nanosheet low-temperature SCR denitration catalyst and a preparation method thereof. The preparation method comprises the following steps: preparing a PVP aqueous solution; the preparation method comprises the following steps: adding FeSO4. 7H2O and (CH3COO) 2Mn. 4H2O into a reaction container; adding an aqueous solution of PVP into the reaction container, carrying out magnetic stirring, and aerating the reaction container by using nitrogen to construct a nitrogen atmosphere; adding a NaBH4 solution into the reaction container in a nitrogen atmosphere, then stopping introduction of nitrogen, and continuing stirring in air to obtain a coarse mixed solution; carrying out alcohol washing and centrifugation on the crude mixed solution, and carrying out vacuum drying to obtain a catalyst precursor; calcining to obtain a catalyst finished product. Compared with the prior art, the catalyst prepared in the invention has the advantages of wide reaction