A series of novel Ce-Cu modified V2O5/TiO2 based commercial SCR catalysts were prepared via ultrasonic-assisted impregnation method for simultaneous removal of NO and elemental mercury (Hg-0). Nitrogen adsorption, X-ray diffraction (XRD), temperature programmed reduction of H-2 (H-2-TPR) and X-ray photoelectron spectroscopy (XPS) were used to characterize the catalysts. 7% Ce-1% Cu/SCR catalyst exhibited the highest NO conversion efficiency (>97%) at 200-400 degrees C, as well as the best Hg-0 oxidation activity (>75%) at 150-350 degrees C among all the catalysts. The XPS and H-2-TPR results indicated that 7% Ce-1% Cu/SCR possess abundant chemisorbed oxygen and good redox ability, which was due to the strong synergy between Ce and Cu in the catalyst. The existence of the redox cycle of Ce4++Cu1+ <-> Ce3++Cu2+ could greatly improve the catalytic activity. 7% Ce-1% Cu/SCR showed higher resistance to SO2 and H2O than other catalysts. NO has a promoting effect on Hg-0 oxidation. The Hg-0 oxidation activity was inhibited by the injection of NH3, which was due to the competitive adsorption and oxidized mercury could be reduced by ammonia at temperatures greater than 325 degrees C. Therefore, Hg-0 oxidation could easily occurred at the outlet of SCR catalyst layer due to the consumption of NH3. (C) 2017 Elsevier B.V. All rights reserved.