Visible Light Activated Photocatalytic Degradation Effect of V-TiO₂ on Azo Dye Wastewater

Abstract:

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.

• Periodical: Advanced Materials Research (Volumes 79-82)
• Pages: 969-972
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.79-82.969
• Online since: August 2009
• Authors: Ta Chih Cheng, Kuo Shan Yao, Yung Hsu Hsieh, Ming Yi Chang, Chen Yu Chang, Guan Hao Wang
• Keywords: AZO Dye, Photocatalytic, Photocatalytic Degradation, Visible Light, V-TiO₂

References

[1] S. Antonaraki, E. Androulaki, D. Dimotikali, A. Hiskia, E. Papaconstantinou, J. Photochem. & Photobio. A: Chem. 148 (2002) 191.

[2] A.K. Axelsson, L.J. Dunnea, J. Photochem. & Photobio. A: Chem. 144 (2001) 205.

[3] I. Ilisz, D. András, M. Károly, F. András, D. Imre, Appli. Cat. B: Environ. 39 (2002) 247.

[4] M. Anpo, Y. Ichihashi, M. Takeuchi, H. Yamashita, Res. Chem. Intermediates 24 (42) (1998) 143.

[5] G. Zhao, H. Kozuka, H. Lin, T. Yoko, Thin Solid Films 339 (1999) 123.

[6] W. Choi, A. Termin, M. Hoffmann, J. Phys. Chem. 98 (1994) 13669.

[7] S. Klosek, D. Raffery, J. Phys. Chem. B 105 (2001) 2815.

[8] U.J. Hong, M. Sc. Thesis, National Chung Hsing University, Taiwan, (2006).

[9] M.Y. Chang, C.Y. Chang, Y.H. Hsieh, K.S. Yao, T.C. Cheng, C.T. Ho, Adv. Mater. Res. 47-50 (2008).