Abstract
In this paper, photocatalytic degradation studies of a hazardous water soluble xanthene dye cyanosine in aqueous suspensions of titanium dioxide under a variety of conditions, viz., catalyst concentration, substrate concentration, pH, temperature and electron acceptor hydrogen peroxide (H 2O 2) have been reported. It was observed that photocatalytic degradation by TiO 2 is an effective, economic and faster mode of removing cyanosine from aqueous solution. The optimum conditions for the degradation of the dye was dye concentration 1 × 10 −4 M, pH 8, catalyst concentration 0.04 g/L and temperature ±30 °C. Chemical oxygen demand and dye absorbance of the photodegraded dye solution substantially decreased.
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