On the structure dependence of CO oxidation over CeO2 nanocrystals with well-defined surface planes

► Surface structure dependence of CO oxidation over ceria rods, cubes, and octahedra. ► Carbonates strongly bonded on ceria surfaces of {1 1 0} and {1 0 0} than on {1 1 1}. ► Surface structure-dependent contribution of four channels in CO-TPR on ceria. ► Structure dependence of ceria lattice oxygen reactivity and mobility. ► Most carbonates observed under CO oxidation conditions are reaction spectators.