Visible Light Activated Photocatalytic Degradation Effect of V-TiO2 on Azo Dye Wastewater
In this study, the V-doped TiO2 was synthesized by sol-gel method and we evaluate the photocatalytic degrading efficiency of V-TiO2 complexes on azo dye wastewater under irradiation with visible light (λ= 419 nm). The results showed that the Anatase structure and nano size of V-TiO2 complexs were formed and they had better photo-response to visible light than pure TiO2. The efficiency of decoloriztion or destruction efficiency was less than 6 % using TiO2 alone but efficiency of 0.10VT-I was up to 90% after irradiated with visible light for 240 min. These evidences also reveal that the system of V-TiO2 complexes can directly utilize the sunlight and can be used to treat organic pollutants in the practical wastewate treatment factories.
Yansheng Yin and Xin Wang
T. C. Cheng et al., "Visible Light Activated Photocatalytic Degradation Effect of V-TiO2 on Azo Dye Wastewater ", Advanced Materials Research, Vols. 79-82, pp. 969-972, 2009