Journal
JOURNAL OF HAZARDOUS MATERIALS
Volume 125, Issue 1-3, Pages 113-120Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jhazmat.2005.05.013
Keywords
photodegradation; dyes; immobilized photocatalyst; visible light; intermediates
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The photodegradation of various dyes in aqueous solution was studied. Experiments were carried out using glass coated titanium dioxide thin film as photocatalyst. Photodegradation processes of methylene blue (MB), methyl orange (MO), indigo carmine (IC), chicago sky blue 6B (CSB), and mixed dye (MD, mixture of the four Mentioned single dye) were reported. As each photodegradation system is pH dependent, the photodegradation experiment was carried out in each dye photodegradation reactive pH range at approximate to 28 degrees C. The dyes removal efficiency was studied and compared using UV-vis spectrophotometer analysis. The total removal of each dye was: methylene blue (90.3%), methyl orange (98.5%), indigo carmine (92.4%), chicago sky blue 6B (60.3%), and mixed dyes (70.1%), respectively. The characteristic of the photocatalyst was investigated using X-ray diffractometer (XRD). The amount of each dye intermediate produced in the photodegradation process was also determined with the help of total organic carbon (TOC) analysis. (c) 2005 Elsevier B.V. All rights reserved.
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