Photocatalytic Degradation of Dye Using Dopping Titanium Dioxide Nanoparticles and its Kinetic Study

Authors

Environmental Engineering Group, Tarbiat Modares University

Abstract

Dyes are one of the wastewater pollutants that use of them is increasing every day. In this study, the dye degradation efficiency with Zn-TiO2 was investigated using the sun as a light source. The effect of zinc on dopant activity and kinetics of dye degradation from wastewater was also investigated. Dopant was made with synthesis induction- evaporation method. The experiments were performed in a continuously photo reactor throughout the day. According to the results, at pH of 6.9, 50 mg /L of dye concentration, 50 mg/m2 catalyst concentration and Zn /Ti equal to 53% within 5 h; dye removal and organic degradation efficiency were obtained 85 and 60 %, respectively. According to the results, the reaction kinetics was pseudo-first-order equation.

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