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Título: | Stainless steel wire mesh-supported ZnO for the catalytic photodegradation of methylene blue under ultraviolet irradiation |
Autor: | Vu, Thi Tan CSIC ORCID; Río, Laura del CSIC; Valdés-Solís Iglesias, Teresa CSIC ORCID ; Marbán Calzón, Gregorio CSIC ORCID | Palabras clave: | Photocatalysis Catalytic activity ZnO Stainless steel mesh Deactivation |
Fecha de publicación: | dic-2012 | Editor: | Elsevier | Citación: | Journal of Hazardous Materials 246-247: 126-134 (2013) | Resumen: | The aim of this study was to assess the activity of catalysts formed by nanostructured zinc oxide supported on stainless steel wire mesh for the photocatalytic degradation of methylene blue under UV irradiation. Catalysts prepared by means of different low temperature synthesis methods, as described in a previous work (Vu et al., Mater. Res. Bull. 47 (2012) 1577–1586) were tested. A new activity parameter was introduced in order to compare the catalytic activity of the different catalysts. The best catalyst showed a catalytic activity higher than that of the reference material TiO2 P25 (Degussa-Evonik). This high activity is attributed to a higher quantum yield derived from the small particle length of the ZnO deposited on the wire mesh. The photocatalytic degradation kinetics of methylene blue fitted a potential model with n orders ranging from 0.5 to 6.9. Reaction orders over 1 were attributed to catalyst deactivation during the reaction resulting from the photocorrosion of ZnO. | Versión del editor: | http://dx.doi.org/10.1016/j.jhazmat.2012.12.009 | URI: | http://hdl.handle.net/10261/111013 | DOI: | 10.1016/j.jhazmat.2012.12.009 | ISSN: | 0304-3894 | E-ISSN: | 1873-3336 |
Aparece en las colecciones: | (INCAR) Artículos |
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Stainless_steel_Vu.pdf | 780,37 kB | Adobe PDF | Visualizar/Abrir |
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