Artículos de revistas
Heterogeneous photocatalytic treatment of organic dyes in air and aqueous media
Fecha
2008-12-01Registro en:
Journal of Photochemistry and Photobiology C: Photochemistry Reviews, v. 9, n. 4, p. 171-192, 2008.
1389-5567
10.1016/j.jphotochemrev.2008.09.001
2-s2.0-59349100302
0000-0002-2296-1393
Autor
University of Texas at Arlington
Universidade Estadual Paulista (Unesp)
Chulalongkorn University
King Mongkut's University of Technology Thonburi
Institución
Resumen
This review focuses on the heterogeneous photocatalytic treatment of organic dyes in air and water. Representative studies spanning approximately three decades are included in this review. These studies have mostly used titanium dioxide (TiO2) as the inorganic semiconductor photocatalyst of choice for decolorizing and decomposing the organic dye to mineralized products. Other semiconductors such as ZnO, CdS, WO3, and Fe2O3 have also been used, albeit to a much smaller extent. The topics covered include historical aspects, dark adsorption of the dye on the semiconductor surface and its role in the subsequent photoreaction, semiconductor preparation details, photoreactor configurations, photooxidation kinetics/mechanisms and comparison with other Advanced Oxidation Processes (e.g., UV/H2O2, ozonation, UV/O3, Fenton and photo-Fenton reactions), visible light-induced dye decomposition by sensitization mechanism, reaction intermediates and toxicity issues, and real-world process scenarios. © 2008 Elsevier B.V. All rights reserved.
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