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Emission-photoactivity cross-processing of mesoporous interfacial charge transfer in Eu<sup>3+</sup> doped titania

hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorLEROY, Céline Marie
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorWANG, Hongfeng
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorFARGUES, Alexandre
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorCARDINAL, Thierry
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorJUBERA, Veronique
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorTRÉGUER-DELAPIERRE, Mona
hal.structure.identifierChaire Chimie des matériaux hybrides
dc.contributor.authorBOISSIÈRE, Cédric
hal.structure.identifierChaire Chimie des matériaux hybrides
dc.contributor.authorSANCHEZ, Clément
hal.structure.identifierChaire Chimie des matériaux hybrides
dc.contributor.authorVIANA, Bruno
hal.structure.identifierChaire Chimie des matériaux hybrides
dc.contributor.authorPELLÉ, Fabienne
dc.date.issued2011
dc.identifier.issn1463-9076
dc.description.abstractEnPeriodic mesoporous Eu<sup>3+</sup> doped titania materials were obtained through the EISA (Evaporation Induced Self Assembly) process. Eu<sup>3+</sup> ions, entrapped within the semi-crystalline walls of the highly porous framework, appear to be advantageous during the probing of surface photochemical reactions. Its emission intensity is very sensitive to the presence of physisorbed molecules, in gas or liquid phase, that reside within the pores. In particular, strong fluctuations in intensity of the <sup>5</sup>D<sub>0</sub> → <sup>7</sup>F<sub>2</sub> transition were observed under UV light exposure on the time scale of tens of seconds. The emission modulation dynamics show a strong correlation with the crystallinity of the titania matrix. Correlation of the emission with the photocatalytic activity of the semiconductor for photodegradation of an organic molecule is observed. A model is proposed to describe the involved mechanisms.
dc.language.isoen
dc.publisherRoyal Society of Chemistry
dc.subject.enEuropium
dc.subject.enPhotocalysis
dc.subject.enLuminescence
dc.subject.enPorous materials
dc.title.enEmission-photoactivity cross-processing of mesoporous interfacial charge transfer in Eu<sup>3+</sup> doped titania
dc.typeArticle de revue
dc.identifier.doi10.1039/C0CP02509G
dc.subject.halChimie/Matériaux
bordeaux.journalPhysical Chemistry Chemical Physics
bordeaux.page11878-11884
bordeaux.volume13
bordeaux.issue25
bordeaux.peerReviewedoui
hal.identifierhal-00604755
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00604755v1
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