The co-effect of Sb and Nb on the SCR performance of the V2O5/TiO2 catalyst

► Both Nb and Sb can increase the activity of V2O5/TiO2 catalyst, and Nb can improve the N2 selectivity. ► The co-doping of Sb and Nb showed higher improving effect than the single doping of Sb or Nb. ► The SbNb co-doped V2O5/TiO2 catalyst had a better H2O resistance than the V2O5/TiO2 catalyst. ► The presence of SO2 could improve the activity of SbNb-doped catalyst at the absence of water vapor.