Currently,　the　elimination　of　gaseous　pollutants-particularly　nitrogen　oxides-has　emerged　as　a　significant　concern.　Among　various　deNO(x)　technologies,　selective　catalytic　reduction　(SCR)　has　gained　prominence　as　the　primary　approach　for　NOx　abatement,　owing　to　its　superior　performance.　In　this　study,　novel　low-temperature　SCR　catalysts　were　developed　by　regulating　the　pH　value　and　doping　cobalt　based　on　a　V2O5-MoO3/TiO2　(VMT)　catalyst.　The　results　show　an　increased　SCR　performance　with　82.8%　and　91.1%　for　catalysts　after　pH　(=10)　modification　(VMT-10)　and　(1　wt%)　Co/pH　(=10)　modification　(1CoVMT-10),　respectively.　H-2-TPR,　NH3-TPD,　XPS　and　DRIFTS　confirmed　that　the　pH　regulation　transformed　polymerization　V　species　into　isolated　V5+=O,　thus　leading　to　an　increase　in　the　number　of　acid　sites,　which　enhanced　the　NH3　and　NO2　adsorption　capacity.　Furthermore,　the　DRIFTS　study　indicated　that　the　NH3-SCR　reaction　over　1CoVMT-10　followed　the　E-R　and　L-H　mechanism.