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TiO2-Assisted Photodegradation of Direct Blue 78 in Aqueous Solution in Sunlight

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Abstract

The photodegradation of azo dyes aqueous solution has been investigated using TiO2 as catalyst in sunlight. The effect of amount of catalyst, concentration of dye, and pH value on the degradation of Direct Blue 78 was observed. A complete degradation of 100 mg/L Direct Blue 78 solution under solar irradiation was achieved in 6 h at pH 3.0, dosage of TiO2 1.0 g/L. A possible pathway for the photodegradation of Direct Blue 78 in sunlight was proposed.

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Acknowledgments

We thank the Natural Science Foundation of Hebei Province (2006000969), China, for financial support.

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Authors and Affiliations

  1. College of Chemistry and Environmental Science, Hebei University, Key Laboratory of Analytical Science and Technology of Hebei Province, Baoding, 071002, People’s Republic of China

    Ya-Li Song, Ji-Tai Li & Bo Bai

  2. College of Vocational and Technological Sanitation, Hebei University, Baoding, 071000, People’s Republic of China

    Ya-Li Song

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  1. Ya-Li Song
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  2. Ji-Tai Li
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Correspondence to Ji-Tai Li.

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Song, YL., Li, JT. & Bai, B. TiO2-Assisted Photodegradation of Direct Blue 78 in Aqueous Solution in Sunlight. Water Air Soil Pollut 213, 311–317 (2010). https://doi.org/10.1007/s11270-010-0386-0

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  • DOI: https://doi.org/10.1007/s11270-010-0386-0

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