Enhancement of Photocatalytic Efficiency of TiO2 by Supporting on Clinoptilolite in the Decolorization of Azo Dye Direct Yellow 12 Aqueous Solutions |
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| Authors: | Manouchehr Nikazar Khodayar Gholivand Kazem Mahanpoor |
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| Institution: | 1. Department of Chemical Engineering, Amirkabir University of Technology, Tehran, Iran;2. Faculty of Science, Department of Chemistry, University of Tarbiat Modares, Tehran, Iran;3. Department of Applied Chemistry, Faculty of Chemistry, Islamic Azad University, North Tehran Branch, Tehran, Iran |
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| Abstract: | Structure and physico‐chemical properties of a photocatalyst, especially surface area and absorption ability, were correlated to catalytic activities in photodegradation of dye pollutants in water. In this investigation photocatalytic degradation of azo dye Direct yellow 12 (Chrysophenine G) in water was studied. Titanium(IV) oxide was supported on Clinoptilolite (CP) (Iranian Natural Zeolite) using solid‐state dispersion (SSD) method. The results show that the TiO2/Clinoptilolite (SSD) is an active photocatalyst. The maximum effect of photo degradation was observed at 10 wt.% TiO2, 90 wt.% Clinoptilolite. A first order reaction with k = 0.0108 min?1 was observed. The effects of some parameters such as pH, amount of photocatalyst, initial concentration of dye were examined. |
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| Keywords: | Photodegradation Photocatalysts TiO2/zeolites Direct yellow 12 Clinoptilolite (CP) |
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