LAUSR

A series of supported TiO2/CeO2 catalysts were synthesized to investigate the morphology and crystal-plane effects of CeO2 on these TiO2/CeO2 catalysts for selective catalytic reduction by ammonia (NH3-SCR). The experiment results show that TiO2/CeO2-NC, TiO2/CeO2-NP, and TiO2/CeO2-NR catalysts present nanocubes (mainly exposed {100} facet), nanopolyhedrons (mainly exposed {111} and {100} facets), and nanorods (mainly exposed {110} and {100} facets), respectively. Furthermore, TiO2/CeO2-NR catalyst exhibits the best dispersion of TiO2 species, the most excellent reduction behavior and surface acidity, and the largest amount of Ce3+ ions and chemisorbed oxygen, which is due to the largest specific surface area and pore volume of CeO2-NR support, as well as the strongest interaction between the surface dispersed TiO2 species and the {110} facet of CeO2-NR support. All of them result in the best denitration performance of TiO2/CeO2-NR catalyst during NH3-SCR reaction.