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

Song, Ya-Li; Li, Ji-Tai; Bai, Bo

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

2010

Song, Ya-Li | Li, Ji-Tai | Bai, Bo

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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