Por favor, use este identificador para citar o enlazar a este item:
http://hdl.handle.net/10261/163187
COMPARTIR / EXPORTAR:
SHARE CORE BASE | |
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE | |
Título: | On the Preparation of TiO2−Sepiolite Hybrid Materials for the Photocatalytic Degradation of TCE: Influence of TiO2 Distribution in the Mineralization |
Autor: | Suárez Gil, Silvia; Coronado, Juan M. CSIC ORCID; Portela, Raquel CSIC ORCID CVN ; Martín Pereira, Juan Carlos; Yates Buxcey, Malcolm; Ávila García, Pedro; Sánchez, Benigno | Fecha de publicación: | 2008 | Editor: | American Chemical Society | Citación: | Environmental Science and Technology 42(16): 5892-5896 (2008) | Resumen: | Hybrid structured photocatalysts based on sepiolite, an adsorbent, and TiO2 were prepared by extrusion of ceramic dough and conformed as plates. The influence of the photocatalyst configuration was studied either by including TiO2 in the extrusion process (incorporated materials) or by coating the sepiolite plates with a TiO2 film (coated materials). The influence of the OH− surface concentration in the photocatalytic performance was studied by treating the ceramic plates at different temperatures. The samples were characterized by N2 adsorption−desorption, MIP, SEM, XRD, and UV−vis−NIR spectroscopy and tested in the photocatalytic degradation of trichloroethylene (TCE) as a target VOC molecule. Most of the catalysts presented high photoactivity, but considerable differences were observed when the CO2 selectivity was analyzed. The results demonstrate that there is a significant effect of the catalyst configuration on the selectivity of the process. An intimate contact between the sepiolite fibers and TiO2 particles for incorporated materials with a corncob-like structure favored the migration of nondesirable reaction products such as COCl2 and dichloroacetyl chloride (DCAC) to the adsorbent, reacting with OH− groups of the adsorbent and favoring the TCE mimeralization. | Versión del editor: | http://dx.doi.org/10.1021/es703257w | URI: | http://hdl.handle.net/10261/163187 | DOI: | 10.1021/es703257w | ISSN: | 0013-936X | E-ISSN: | 1520-5851 |
Aparece en las colecciones: | (ICP) Artículos |
Ficheros en este ítem:
Fichero | Descripción | Tamaño | Formato | |
---|---|---|---|---|
Suarez_preparation_EnvSciTech-postprint.pdf | 908,32 kB | Adobe PDF | Visualizar/Abrir |
CORE Recommender
SCOPUSTM
Citations
72
checked on 20-abr-2024
WEB OF SCIENCETM
Citations
68
checked on 25-feb-2024
Page view(s)
300
checked on 24-abr-2024
Download(s)
289
checked on 24-abr-2024
Google ScholarTM
Check
Altmetric
Altmetric
NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.