Por favor, use este identificador para citar o enlazar a este item:
http://hdl.handle.net/10261/62401
COMPARTIR / EXPORTAR:
SHARE CORE BASE | |
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE | |
Título: | Enhanced Photoactivity in Bilayer Films with Buried Rutile–Anatase Heterojunctions |
Autor: | Romero-Gómez, Pablo CSIC; Borrás, Ana CSIC ORCID; Barranco, Ángel CSIC ORCID; Espinós, J.P. CSIC ORCID; González-Elipe, Agustín R. CSIC ORCID | Palabras clave: | Crystal growth Photocatalysis Raman spectroscopy Surface chemistry Thin films |
Fecha de publicación: | 17-ene-2011 | Editor: | Wiley-VCH | Citación: | ChemPhysChem 12 (1): 191-196 (2011) | Resumen: | Herein, we study the photoactivity of anatase–rutile bilayer thin films consisting of an anatase overlayer of variable thickness from some tenths to some hundred nanometers deposited onto a rutile thin film. As references single anatase layers of equivalent thickness were deposited onto silicon. All the films were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and Raman spectroscopy. The photoactivity of the samples was assessed by following the evolution with the UV illumination time of both the wetting angle on the thin film surface and the decoloration of a dye in a water solution. While a similar efficiency is found for the first type of experiments irrespective of the anatase thickness, in the second type a maximum in the photoactivity is found for a thickness of the anatase layer of about 130 nm. This enhanced photoactivity in bilayer systems with a buried anatase–rutile heterojunction is related to the formation of different Schottky potential barriers in the anatase layer, depending on its thickness and the substrate (i.e. rutile or SiO2) where it is deposited. | Descripción: | 6 páginas; 5 figuras | Versión del editor: | http://dx.doi.org/10.1002/cphc.201000734 | URI: | http://hdl.handle.net/10261/62401 | DOI: | 10.1002/cphc.201000734 | ISSN: | 1439-4235 | E-ISSN: | 1439-7641 |
Aparece en las colecciones: | (ICMS) Artículos |
Ficheros en este ítem:
Fichero | Descripción | Tamaño | Formato | |
---|---|---|---|---|
Embargo_Gral.pdf | 21,67 kB | Adobe PDF | Visualizar/Abrir |
CORE Recommender
SCOPUSTM
Citations
22
checked on 29-mar-2024
WEB OF SCIENCETM
Citations
22
checked on 29-feb-2024
Page view(s)
375
checked on 18-abr-2024
Download(s)
241
checked on 18-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.