ZnO catalysts prepared by thermal decomposition, sol–gel and precipitation methods.
Co3O4/ZnO catalysts prepared by impregnation method using different zinc precursors.
The SBET of Co3O4/ZnO catalysts were much higher than those of the pure oxides.
The decomposition of H2O2 of Co3O4/ZnO catalysts is higher than of the pure oxides.
The addition of Co3O4 to ZnO catalyst modified the morphology.