Study on photocatalytic degradation performance of reactive brilliant X3B over Sdoped titanium dioxide

Key words: 
• TiO2 /
• S-doped /
• visible light /
• reactive brilliant X-3B

Abstract: S-doped TiO2 was prepared with sol-gel method with thiourea as S-source and tetrabutyl titanate as precursor of titanium dioxide. Reactive brilliant X-3B was used as model compound to study the photocatalytic degradation performance of the modified catalysts, including the effect of S-doped concentration, calcinations temperature, pH of solution and catalyst dosage. The catalysts were characterized by XRD techniques. The photocatalytic activity of the modified TiO2 was greatly improved, and there was an optimum value for the S-doped concentration at a mole ratio of 1∶1 for Ti∶S. The S-doped TiO2 was shown a fairy photocatalytic activity in visible region, a removal efficiency of 35.1% for X-3B was obtained at reaction time of 180 min. S-doped TiO2 exhibited higher activity than TiO2 in UV region.