Uniform manganese oxide octahedral molecular sieve（OMS-2） nanorods were synthesized by adding a small quantity of K2S2O8 to the solution containing MnSO4·H2O and KMnO4,and used for complete oxidation of formaldehyde.According to the results of N2 adsorption and X-ray diffraction,the material is a manganese oxide octahedral molecular sieve with the cryptomelane type structure.TEM observation shows that the diameters of the nanorods range from 15 to 25 nm, and the lengths are 300～400 nm.Complete conversion of HCHO to CO2 and H2O can be achieved at 353 K over OMS-2,and the same conversion is obtained at 373 K on the MnOx powder under the same conditions,which demonstrates that the catalytic activity is closely related to the morphology of the catalysts.
