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Photocatalytic Degradation of Organic Dye Methyl Orange with Phosphotungstic Acid
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Journal of Water Resource and Protection·Volume 02 (2010)·Pages 979–983·Published 29 November 2010·DOI10.4236/jwarp.2010.211116
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Abstract
Silicotungstic acid and phosphotungstic acid were prepared and characterized by Fourier Transform Infrared Spectroscopy (FTIR) and X-ray diffraction (XRD). The results showed that the prepared catalysts possess classical Keggin structure. The factors on the degradation of methyl orange, such as the kind of catalyst, the amount of catalyst, the original concentration of dye and illumination time were investigated under metal halide lamp. The degradation of methyl orange is up to 93.6% with phosphotungstic acid at the best reaction conditions at 8.89 g/L concentration of phosphotungstic acid, 5.56 mg/L concentration of methyl orange and 80 min illumination time.
KeywordsPhosphotungstic AcidPhotocatalyticDegradationMethyl Orange
- M. Q. Hu and Y. M. Xu, “Photocatalytic degradation of textile dye X3B by heteropolyoxometalate acids,” Chemosphere, Vol. 54, No. 3, 2004, pp. 431-434.
- A. Fujishima and K. Honda, “Electrochemical photolysis of water at a semiconductor electrode,” Nature, Vol. 238, No. 5358, 1972, pp. 37-38.
- A. Troupis, T. M. Triantis, E. Gkika, A. Hiski and E, Papaconstantinou, “Photocatalytic reductive–oxidative degradation of Acid Orange7 by polyoxometalates,” Ap- plied Catalysis B: Environmental, Athens, Vol. 86, No.1-2, 2009, pp. 98-107.
- P. Kormali, A. Troupis, T. Triantis, A. Hiskia and E. Papaconstantinou, “Photocatalysis by polyoxometallates and TiO2: A comparative study,” Catalysis Today, Vol. 124, No. 3-4, 2007, pp. 149-155.
- Y. Yang, Q. Y. Wu, Y. H. Guo, C. W. Hu and E. B. Wang, “Efficient degradation of dye pollutants on nanoporous polyoxotungstate–anatase composite under visible-light irradiation,” Journal of Molecular Catalysis A: Chemical, Vol. 225, No. 2, 2005, pp. 203-212.
- Y. Q. Wang, L. J. Wang and P. Y. Peng, “Photocatalytic degradation of L-acid by TiO2 supported on the activated carbon,” Journal of Environmental Sciences, Vol. 18, No. 3, 2006, pp. 562-566.
- I. M. Arabatzis, S. Antonaraki, T. Stergiopoulos, A. Hiskia, E. Papaconstantinou, M. C. Bernard and P. Falaras, “Preparation, characterization and photocatalytic activity of nanocrystalline thin ?lm TiO2 catalyststowards 3, 5-dichlorophenol degradation,” Journal of Photochemistry and Photobiology A: Chemistry, Vol. 149, No. 1-3, 2002, pp. 237-245.
- X. H. Zhu, W. Wang and H. C. Li, “Photocatalysis of phosphotungstic acid for dye solution degradation,” Shanghai Environmental Sciences, Vol. 20, No. 9, 2001, pp. 444-450.
- X. H. Zhu, H. C. Li and W. Wang, “Photocatalytic degradation of methyl orange solution with silicotungstic acid,” Journal of Dalian Railway Institute, Vol. 22, No. 1, 2001, pp. 101-104.
- E. Gkika, A. Troupis, A. Hiskia and E. Papaconstantinou, “Photocatalytic reduction of chromium and oxidation of organics by polyoxometalates,” Applied Catalysis B: En vironmental, Vol. 62, No 1-2, 2006, pp. 28-34.
- M. Yoon, J. A. Chang, Y. Kim, and J. R. Choi, “Heteropoly acid-incorported TiO2 collids as novel photocatalytic systems resembling the photo-synthetic reaction center,” Journal of Physical Chemistry B, Vol. 105, No. 13, 2001, pp. 2539-2545.
- S. J. Yang. and H. Y. Tang, “Catalytic synthesis of butanone 1,2-propanediol ketal from phosphotungstic acid/silica,” China Chemicals, No. 5, 2008, pp. 36-38.