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Abstract:

Mesoporous titania thin films with accessible porosity and anatase structure were synthesized on conductive glass or silicon substrates. Ti K-edge XANES was used to assess Ti local coordination. Analysis of the pre-edge region permitted accurate quantification of the degree of crystalline nature of the inorganic walls upon thermal treatment. The substrate has a marked effect: film crystallization takes places at temperatures 100° C lower in the crystalline Si, with respect to conductive glass. Accordingly, remarkable photocatalytic properties are found in well-crystallized mesoporous titania deposited onto conductive silicon. © 2007 American Chemical Society.

Registro:

Documento: Artículo
Título:Mesoporous anatase TiO 2 films: Use of Ti K XANES for the quantification of the nanocrystalline character and substrate effects in the photocatalysis behavior
Autor:Angelomé, P.C.; Andrini, L.; Calvo, M.E.; Requejo, F.G.; Bilmes, S.A.; Soler-Illia, G.J.A.A.
Filiación:Unidad de Actividad Química, Comisión Nacional de Energía Atómica, UAQ-CAC-CNEA, Avenida Gral Paz 1499, B1650KNA, San Martin, Buenos Aires, Argentina
Departamento Física, FCE, UNLP e INIFTA-IFLP (CONICET), La Plata, Argentina
DQIAyQF, Universidad de Buenos Aires, Ciudad Universitaria, C1428EHA, Buenos Aires, Argentina
INQUIMAE, Universidad de Buenos Aires, Ciudad Universitaria, C1428EHA, Buenos Aires, Argentina
CONICET, Avda. Rivadavia 1917, C1033AAJ Buenos Aires, Argentina
Palabras clave:Mesoporous materials; Nanocrystalline materials; Photocatalysis; Titanium dioxide; X ray absorption near edge structure spectroscopy; Conductive glass; Conductive silicon; Film crystallization; Substrate effects; Thin films
Año:2007
Volumen:111
Número:29
Página de inicio:10886
Página de fin:10893
DOI: http://dx.doi.org/10.1021/jp069020z
Título revista:Journal of Physical Chemistry C
Título revista abreviado:J. Phys. Chem. C
ISSN:19327447
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_19327447_v111_n29_p10886_Angelome

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Citas:

---------- APA ----------
Angelomé, P.C., Andrini, L., Calvo, M.E., Requejo, F.G., Bilmes, S.A. & Soler-Illia, G.J.A.A. (2007) . Mesoporous anatase TiO 2 films: Use of Ti K XANES for the quantification of the nanocrystalline character and substrate effects in the photocatalysis behavior. Journal of Physical Chemistry C, 111(29), 10886-10893.
http://dx.doi.org/10.1021/jp069020z
---------- CHICAGO ----------
Angelomé, P.C., Andrini, L., Calvo, M.E., Requejo, F.G., Bilmes, S.A., Soler-Illia, G.J.A.A. "Mesoporous anatase TiO 2 films: Use of Ti K XANES for the quantification of the nanocrystalline character and substrate effects in the photocatalysis behavior" . Journal of Physical Chemistry C 111, no. 29 (2007) : 10886-10893.
http://dx.doi.org/10.1021/jp069020z
---------- MLA ----------
Angelomé, P.C., Andrini, L., Calvo, M.E., Requejo, F.G., Bilmes, S.A., Soler-Illia, G.J.A.A. "Mesoporous anatase TiO 2 films: Use of Ti K XANES for the quantification of the nanocrystalline character and substrate effects in the photocatalysis behavior" . Journal of Physical Chemistry C, vol. 111, no. 29, 2007, pp. 10886-10893.
http://dx.doi.org/10.1021/jp069020z
---------- VANCOUVER ----------
Angelomé, P.C., Andrini, L., Calvo, M.E., Requejo, F.G., Bilmes, S.A., Soler-Illia, G.J.A.A. Mesoporous anatase TiO 2 films: Use of Ti K XANES for the quantification of the nanocrystalline character and substrate effects in the photocatalysis behavior. J. Phys. Chem. C. 2007;111(29):10886-10893.
http://dx.doi.org/10.1021/jp069020z