Unravelling the role of lithium and nickel doping on the detect structure and phase transition of anatase TIO2 nanoparticles

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dc.contributor.authorVázquez López, Antonio
dc.contributor.authorMaestre Varea, David
dc.contributor.authorMartínez Casado, Ruth
dc.contributor.authorRamírez Castellanos, Julio
dc.contributor.authorPís, Igor
dc.contributor.authorNappini, Silvia
dc.contributor.authorCremades Rodríguez, Ana Isabel
dc.date.accessioned2023-06-22T10:42:04Z
dc.date.available2023-06-22T10:42:04Z
dc.date.issued2022-04
dc.description©2022 Springer We acknowledge Elettra Sincrotrone Trieste for providing access to its synchrotron radiation facilities. This work was supported by MINECO/FEDER/M-ERA.Net Cofound projects: RTI2018-097195-B-I00 and PCIN-2017-106. I.P. and S.N. gratefully acknowledge financial support from EUROFEL.
dc.description.abstractAnatase TiO_2 nanoparticles doped either with Li or Ni have been synthesized via hydrolysis in variable concentrations. Microstructural analysis confirms the high crystallinity of the doped nanoparticles with sizes around 7 nm, while compositional analysis shows low doping below 2% at. Despite the low concentration of dopants, variations in the Raman and Photoluminescence signals were observed in the doped nanoparticles, mainly due to non-stoichiometry and oxygen deficiency promoted by Li or Ni doping. Doping effects associated with Li and Ni were observed by photoelectron spectroscopy and first principle calculations, which associate the appearance of states in the valence band region to oxygen deficiency and Li or Ni doping and lower n-type character induced by Ni doping. Finally, changes in the thermally induced anatase-to-rutile transition (ART) have been also observed in the doped samples, leading to a dopant-promoted faster ART which occurs at lower temperature boosted due to the dopant effect.
dc.description.departmentDepto. de Física de Materiales
dc.description.facultyFac. de Ciencias Físicas
dc.description.refereedTRUE
dc.description.sponsorshipMinisterio de Ciencia e Innovación (MICINN)/ FEDER
dc.description.sponsorshipMinisterio de Economía y Competitividad (MINECO)
dc.description.statuspub
dc.eprint.idhttps://eprints.ucm.es/id/eprint/72025
dc.identifier.doi10.1007/s10853-022-07122-x
dc.identifier.issn0022-2461
dc.identifier.officialurlhttp://dx.doi.org/10.1007/s10853-022-07122-x
dc.identifier.relatedurlhttps://link.springer.com/
dc.identifier.urihttps://hdl.handle.net/20.500.14352/71431
dc.issue.number14
dc.journal.titleJournal of materials science
dc.language.isoeng
dc.page.final7207
dc.page.initial7191
dc.publisherSpringer
dc.relation.projectIDRTI2018-097195-B-I00
dc.relation.projectIDPCIN-2017-106
dc.rights.accessRightsopen access
dc.subject.cdu538.9
dc.subject.keywordX-ray-absorption
dc.subject.keywordDoped TiO_2
dc.subject.keywordPhotocatalytic activity
dc.subject.keywordCatalytic-activity
dc.subject.keywordOxygen vacancy
dc.subject.keywordl-edge
dc.subject.keywordTitanium
dc.subject.keywordTransformation
dc.subject.keyword2p
dc.subject.keywordPhotoluminescence
dc.subject.ucmFísica de materiales
dc.subject.ucmFísica del estado sólido
dc.subject.unesco2211 Física del Estado Sólido
dc.titleUnravelling the role of lithium and nickel doping on the detect structure and phase transition of anatase TIO2 nanoparticles
dc.typejournal article
dc.volume.number57
dspace.entity.typePublication
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relation.isAuthorOfPublication43cbf291-2f80-4902-8837-ea2a9ffaa702
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relation.isAuthorOfPublication.latestForDiscovery55fde582-0059-47d1-84c0-719242d50034
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