Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
580711 | Journal of Hazardous Materials | 2010 | 12 Pages |
Abstract
The purposes of this research were to study the effects of two modified photocatalysts, Nafion-coated TiO2 and fluorinated TiO2, and photocatalytic degradation of Victoria Blue R in aqueous solution. Photocatalytic degradation of Victoria Blue R was accelerated by the modified photocatalysts. Bulk and surface characterizations of the resulting powders were carried out. Attachment of the anions to the TiO2 surface using the Nafion-coated-TiO2 possibly results in increased adsorption of the cationic dye, and the degradation rate is larger for the cationic dye. It was found that Victoria Blue R on the two illuminated TiO2 surfaces underwent very different changes. To obtain a better understanding on the mechanistic details of this modified-TiO2-assisted photodegradation of the Victoria Blue R dye with UV irradiation, a large number of intermediates of the process were separated, identified, and characterized by a high-performance liquid chromatography-mass spectrometry technique. Several probable photodegradation pathways were proposed and discussed.
Keywords
Related Topics
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Chemical Engineering
Chemical Health and Safety
Authors
K.T. Chen, C.S. Lu, T.H. Chang, Y.Y. Lai, T.H. Chang, C.W. Wu, C.C. Chen,