Identificador persistente para citar o vincular este elemento: http://hdl.handle.net/10553/46311
Título: Effect of additives in photocatalytic degradation of commercial azo dye Lanaset Sun Yellow 180
Autores/as: Arana, J. 
Zerbani, D.
Melián, J. A.Herrera 
Sousa, D. Garzón 
Díaz, O. González 
Doña Rodríguez, José Miguel 
Clasificación UNESCO: 221001 Catálisis
Palabras clave: Iron
Dyes
Acetate
Citric Acid
Fecha de publicación: 2013
Proyectos: Water Detoxification Using Innovative vi-Nanocatalysts 
Publicación seriada: Photochemical and Photobiological Sciences 
Resumen: The photocatalytic degradation of the commercial dye Lanaset Sun Yellow 180 was studied in the presence and absence of the different additives used in the dye's formulation. The experiments were performed with Degussa P25 as received and doped with Fe (Fe–TiO2) and a new catalyst synthesized by our research group (ECT-1023). The best efficiency was achieved with Fe–TiO2. With this catalyst, the formation of a photoactive complex was observed between the dye and Fe atoms of the catalyst surface that accelerated degradation. FTIR studies revealed that the complex was formed by interaction between the dye's carbonyl groups and the atoms of the metal. In mixtures of the dye containing citric acid or acetate, degradation was notably inhibited with the catalysts Fe–TiO2 and ECT-1023 because of the formation of carboxylates on their surface. This inhibitory effect was neutralized when all the additives were present in the solution. Toxicity analyses indicated that intermediates were not toxic. Thus, the photocatalytic methods seem to be optimal for the decolourization of wastewaters containing this dye.
URI: http://hdl.handle.net/10553/46311
ISSN: 1474-905X
DOI: 10.1039/c2pp25191d
Fuente: Photochemical and Photobiological Sciences [ISSN 1474-905X], v. 12, p. 703-708
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