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http://hdl.handle.net/10553/43244
Título: | Photocatalytic degradation of phenol and phenolic compounds: Part I. Adsorption and FTIR study |
Autores/as: | Araña Mesa, Francisco Javier Pulido Melián, Elisenda Rodríguez López, V. M. Peña Alonso, A. Doña Rodríguez, José Miguel González Díaz, Oscar Manuel Pérez Peña, Jesús |
Clasificación UNESCO: | 221001 Catálisis |
Palabras clave: | Photocatalysis Phenolic compounds Isotherms FTIR TiO2 |
Fecha de publicación: | 2007 |
Editor/a: | 0304-3894 |
Proyectos: | Preparacion, Caracterizacion y Propiedades de Sistemas Fotocataliticos Altamente Reactivos Basados en Aplica<Ciones Medioambientales Tratamiento de Aguas Residuales Urbanas E Industriales Mediante Sistemas Naturales de Depuración, Sistemas Fotocatalíticos y Su Combinación. |
Publicación seriada: | Journal of Hazardous Materials |
Conferencia: | 1st European Conference on Environmental Applications of Advanced Oxidation Processes |
Resumen: | With the goal of predicting the photocatalytic behaviour of different phenolic compounds (catechol, resorcinol, phenol, m-cresol and o-cresol), their adsorption and interaction types with the TiO2 Degussa P-25 surface were studied. Langmuir and Freundlich isotherms were applied in the adsorption studies. The obtained results indicated that catechol adsorption is much higher than those of the other phenolics and its interaction occurs preferentially through the formation of a catecholate monodentate. Resorcinol and the cresols interact by means of hydrogen bonds through the hydroxyl group, and their adsorption is much lower than that of catechol. Finally, phenol showed an intermediate behaviour, with a Langmuir adsorption constant, KL, much lower than that of catechol, but a similar interaction. The interaction of the selected molecules with the catalyst surface was evaluated by means of FTIR experiments, which allowed us to determine the probability of OH radical attack to the aromatic ring. |
URI: | http://hdl.handle.net/10553/43244 |
ISSN: | 0304-3894 |
DOI: | 10.1016/j.jhazmat.2007.04.066 |
Fuente: | Journal of Hazardous Materials [ISSN 0304-3894], v. 146 (3), p. 520-528 |
Colección: | Artículos |
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