Influence of vanadia content onto TiO2-SiO2 matrix for photocatalytic oxidation of trichloroethylene

Direct synthesis of vanadia onto titania-silica matrices as photocatalysts was achieved by using simple sol-gel method. This synthetic strategy revealed that the vanadia species could be loaded into the TiO2-SiO2 matrices up to 18.5 wt%. Results from FTIR indicated that in the case of low loading amounts of vanadia species (i.e. ⩽1), the formation of monolayer vanadia species onto the matrices was successfully fabricated; however, a polymeric vanadate could be formed with high loading of vanadia species.