CuO Catalysts Supported on Porous TiO2 Microspheres for Low-Temperature CO Oxidation

The porous TiO2 microspheres were prepared by the reversed-phase suspension polymerization and sol-gel method using reversed-phase suspension droplets as the templates. The CO oxidation catalytic properties of the CuO/TiO2 catalysts prepared by hydrothermal method and impregnation method were extensively investigated. The structure of CuO/TiO2 catalysts was determined by TG-DTA, XRD, TEM, and XPS. The results indicated that the redox capacity of CuO/TiO2 was greatly depended on the aqueous solution concentration of Cu(NO3)2 used in the preparation of CuO/TiO2 and the calcination temperature of the CuO/TiO2 catalysts.