One-step synthesized SO42--TiO2 withexposed (001) facets and its application in selective catalytic reduction of NO by NH3

A sample of sulfated anatase TiO2 with high-energy (001) facets (TiO2-001) was prepared by a simple one-step hydrothermal route using SO42- as a morphology-controlling agent. After doping ceria, Ce/TiO2-001 was used as the catalyst for selective catalytic reduction (SCR) of NO with NH3. Compared with Ce/P25 (Degussa P25 TiO2) and Ce/P25-S (sulfated P25) catalysts, Ce/TiO2-001 was more suitable for medium- and high-temperature SCR of NO due to the high surface area, sulfation, and the excellent properties of the active-energy (001) facets. All of these facilitated the generation of abundant acidity, chemisorbed oxygen, and activated NO, adsorption species, which were the important factors for the SCR reaction. (C) 2018, Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by Elsevier B.V. All rights reserved.