removal and degradation of rhodamine b in aqueous solution by modified titanium dioxide nanotubes as photocatalyst under solar light

Photocatalytic techniques have attracted much attention due to their potential applications in water treatment, air purification and sunlight utilization [1]. polyoxometalates are efficient photocatalysts for the degradation of organic dyes [2]. in recent years, polyoxometalates (poms) have attracted particular interest in photocatalysis due to their strong bronsted and their structural properties [3]. in this work, phosphotungstic acid modified titanium dioxide nanotubes was prepared with efficient photocatalytic capability under solar light irradiation. the nanoparticles shows the highest photocatalytic activity for rhodamine b (rhb) degradation. the effects of various experimental parameters have been investigated on the decolorization of rhb.