Publication: Consequences of nitrogen doping and oxygen enrichment on titanium local order and photocatalytic performance of TiO2 anatase
dc.affiliation.dpto | UC3M. Departamento de Física | es |
dc.affiliation.grupoinv | UC3M. Grupo de Investigación: Materiales avanzados para aplicaciones en energía solar | es |
dc.contributor.author | Krivtsov, Igor | |
dc.contributor.author | Ilkaeva, Marina | |
dc.contributor.author | Salas Colera, Eduardo | |
dc.contributor.author | Amghouz, Zakariae | |
dc.contributor.author | García, José R. | |
dc.contributor.author | Díaz, Eva | |
dc.contributor.author | Ordoñez, Salvador | |
dc.contributor.author | Villar-Rodil, Silvia | |
dc.contributor.funder | Ministerio de Economía y Competitividad (España) | es |
dc.date.accessioned | 2023-01-17T08:08:48Z | |
dc.date.available | 2023-01-17T08:08:48Z | |
dc.date.issued | 2017-03-30 | |
dc.description.abstract | Extended X-ray absorption fine structure (EXAFS) investigation of the oxygen-rich titania formed via the thermal treatment of N-doped TiO2 has revealed that the removal of N-dopants is responsible for the creation of defect sites in the titanium environment, thus triggering at high temperatures (500-800 °C) the capture of atmospheric oxygen followed by its diffusion toward the vacant sites and formation of interstitial oxygen species. The effect of the dopants on Ti coordination number and Ti-Oint and Ti-Nint bond distances has been estimated. The photocatalytic p-cresol degradation tests have demonstrated that the interband states formed by the N-dopants contribute to a greater extent to the visible-light activity than the oxygen interstitials do. However, under the UV irradiation the oxygen-rich titania shows higher efficiency in the pollutant degradation, while the N-dopants in N-TiO2 play the role of recombination sites. The presence of the surface nitrogen species in TiO2 is highly beneficial for the application in partial photooxidation reactions, where N-TiO2 demonstrates a superior selectivity of 5-hydroxymethyl furfural (HMF) oxidation to 2,5-furandicarboxaldehyde (FDC). Thus, this work underlines the importance of a rational design of nonmetal doped titania for photocatalytic degradation and partial oxidation applications, and it establishes the role of bulk defects and surface dopants on the TiO2 photooxidation performance. | en |
dc.description.sponsorship | This work was financially supported by Spanish MINECO (MAT2013-40950-R, MAT2016-78155-C2-1-R, and CTQ2014-52956-C3-1-R), Gobierno del Principado de Asturias (GRUPIN14-060 and GRUPIN14-078), FEDER and South Ural State University thanks for the support the Ministry of Education and Science of the Russian Federation (grant No 16.2674.2014/K). | en |
dc.format.extent | 11 | |
dc.identifier.bibliographicCitation | Krivtsov, I., Ilkaeva, M., Salas-Colera, E., Amghouz, Z., García, J. R., Díaz, E., Ordoñez, S. & Villar-Rodil, S. (2017). Consequences of nitrogen doping and oxygen enrichment on titanium local order and photocatalytic performance of TiO2 anatase. Journal of Physical Chemistry C, 121(12), 6770-6780. | en |
dc.identifier.doi | https://doi.org/10.1021/acs.jpcc.7b00354 | |
dc.identifier.issn | 1932-7447 | |
dc.identifier.publicationfirstpage | 6770 | |
dc.identifier.publicationissue | 12 | |
dc.identifier.publicationlastpage | 6780 | |
dc.identifier.publicationtitle | Journal of Physical Chemistry C | en |
dc.identifier.publicationvolume | 121 | |
dc.identifier.uri | https://hdl.handle.net/10016/36276 | |
dc.identifier.uxxi | AR/0000027044 | |
dc.language.iso | eng | |
dc.publisher | American Chemical Society (ACS) | en |
dc.relation.projectID | Gobierno de España. MAT2013-40950-R | es |
dc.relation.projectID | Gobierno de España. MAT2016-78155-C2-1-R | es |
dc.relation.projectID | Gobierno de España. CTQ2014-52956-C3-1-R | es |
dc.rights | © 2017 American Chemical Society | en |
dc.rights.accessRights | open access | en |
dc.subject.eciencia | Energías Renovables | es |
dc.subject.other | Materials | en |
dc.subject.other | Minerals | en |
dc.subject.other | Nitrogen | en |
dc.subject.other | Oxides | en |
dc.subject.other | Oxygen | en |
dc.title | Consequences of nitrogen doping and oxygen enrichment on titanium local order and photocatalytic performance of TiO2 anatase | en |
dc.type | research article | * |
dc.type.hasVersion | AM | * |
dspace.entity.type | Publication |
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