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dc.contributor.authorAnsón Casaos, Alejandro-
dc.contributor.authorTacchini, Ignacio-
dc.contributor.authorUnzue, Andrea-
dc.contributor.authorMartínez Fernández de Landa, María Teresa-
dc.identifier.citationApplied Surface Science 270 : 675-684 (2013)es_ES
dc.description9 pages, 11 figures, 2 tables.- Available online 26 January, 2013es_ES
dc.description.abstractHydrothermally synthesized titanate nanotubes were carbon-doped through a thermal treatment in the presence of glucose followed by blending with single-walled carbon nanotubes (SWCNTs). A series of TiO2-based materials was prepared with various initial glucose contents and two SWCNT types, resulting in total carbon contents from 0.3 wt.% to nearly 26 wt.%. Electron microscopy observations indicated that titanate nanotubes were converted into nanorods during the thermal treatment, and X-ray diffraction patterns confirmed that all the treated materials mostly consisted of anatase TiO2. Glucose pyrolisis caused changes in the infrared and X-ray photoelectron spectra of the titania material, indicating an interaction between the inserted carbon atoms and titanium atoms. Raman spectra of SWCNT/C/TiO2 hybrids showed characteristic bands of both the SWCNT and anatase TiO2 phases. SWCNT/C/TiO2 multicomponent materials demonstrated substantially better photocatalytic activities than P25 TiO2 for methylene blue degradation under visible light irradiation. Independently from its origin, the presence of carbon caused a strong increase in the TiO2 visible light absorption. However, the results obtained with the C/TiO2 and SWCNT/C/TiO2 photocatalysts clearly showed different photocatalysis mechanisms depending on the carbon form.es_ES
dc.description.sponsorshipThis work was funded by the Government of Aragon and “La Caixa” under project GA-LC-041/2008, the Spanish MINECO under the projects EUI2008-00152, TEC2010-15736, and PRI-PIBAR-2011-1, and the Government of Aragon (DGA) and the European Social Fund (ESF) under Project DGA-ESF-T66 CNN.es_ES
dc.subjectTitanium dioxidees_ES
dc.subjectCarbon nanotubeses_ES
dc.titleCombined modification of a TiO2 photocatalyst with two different carbon formses_ES
dc.description.peerreviewedPeer reviewedes_ES
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