Journal
JOURNAL OF PHYSICAL CHEMISTRY C
Volume 111, Issue 29, Pages 10886-10893Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jp069020z
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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 degrees 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.
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