Artículo
Powder and Nanotubes Titania Modified by Dye Sensitization as Photocatalysts for the Organic Pollutants Elimination
Autor/es | Murcia Mesa, Julie Joseane
Ávila Martínez, Elsa G. Rojas Sarmiento, Hugo Alfonso Cubillos Lobo, Jairo Antonio Ivanova, Svetlana Penkova, Anna Dimitrova Laguna Espitia, Oscar Hernando |
Departamento | Universidad de Sevilla. Departamento de Química Inorgánica |
Fecha de publicación | 2019-04-02 |
Fecha de depósito | 2019-07-04 |
Publicado en |
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Resumen | In this study, titanium dioxide powder obtained by the sol-gel method and TiO2nanotubes, were prepared. In order to increase the TiO2 photoactivity, the powders and nanotubes obtained were modified by dye sensitization ... In this study, titanium dioxide powder obtained by the sol-gel method and TiO2nanotubes, were prepared. In order to increase the TiO2 photoactivity, the powders and nanotubes obtained were modified by dye sensitization treatment during the oxide synthesis. The sensitizers applied were Quinizarin (Q) and Zinc protoporphyrin (P). The materials synthesized were extensively characterized and it was found that the dye sensitization treatment leads to modify the optical and surface properties of Titania. It was also found that the effectiveness of the dye-sensitized catalysts in the phenol and methyl orange (MO) photodegradation strongly depends on the dye sensitizer employed. Thus, the highest degradation rate for MO was obtained over the conventional Q-TiO 2 photocatalyst. In the case of the nanotubes series, the most effective photocatalyst in the MO degradation was based on TiO 2 -nanotubes sensitized with the dye protoporfirin (ZnP). Selected catalysts were also tested in the phenol and MO photodegradation under visible light and it was observed that these samples are also active under this radiation. |
Identificador del proyecto | 279-2016
ENE2015-66975-C3-2-R.C |
Cita | Murcia Mesa, J.J., Ávila Martínez, E.G., Rojas Sarmiento, H.A., Cubillos Lobo, J.A., Ivanova, S., Penkova, A.D. y Laguna Espitia, O.H. (2019). Powder and Nanotubes Titania Modified by Dye Sensitization as Photocatalysts for the Organic Pollutants Elimination. Nanomaterials, 9 (4), 517-1-517-11. |
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