A series of V2O5-MnOX/TiO2-CNTs, V2O5/TiO2-CNTs, and MnOX/TiO2-CNTs catalysts were synthesized via solvothermal method and their NOX removal activities were studied. A catalytic performance improvement was observed over catalysts prepared by mechanical mixing MnOX/TiO2-CNTs and V2O5/TiO2-CNTs. XRD, SEM, EDS, TPD, TPR, and BET were employed to analyze the improvement which is ascribed to the separation of Mn and V as well as the increase in reducibility and acidic strength.