Preparation, Characterization of Supported Phosphotungstic Acid and Photocatalytic Degradation of Aqueous Methyl Orange

In this paper, phosphotungstic acid was immobilized into mesopore materials MCM-41 with a larger surface area and a higher thermal stability. The supported phosphotungstic acid catalysts were characterized by FT-IR, TEM and N-2 adsorption-desorption techniques. In addition, the effect of supported contents of the phosphotungstic acids on the degradation rate was also studied.