Synthesis and Cathodoluminescence of Undoped and Cr^3^+-Doped Sodium Titanate Nanotubes and Nanoribbons
| dc.contributor.author | Piqueras De Noriega, Francisco Javier | |
| dc.contributor.author | Díaz-Guerra Viejo, Carlos | |
| dc.contributor.author | Umek, Polona | |
| dc.contributor.author | Gloter, Alexandre | |
| dc.date.accessioned | 2023-06-20T03:36:39Z | |
| dc.date.available | 2023-06-20T03:36:39Z | |
| dc.date.issued | 2010-05-13 | |
| dc.description | ©2010 American Chemical Society. This work has been supported by MEC trough projects MAT2006-01259 and MAT2009-07882 and by the Slovenian Research Agency (J2-9217). P.U. and A.G. also acknowledge financial support from the European Union as a part of a Framework 6 program under a contract for an Integrated Infrastructure Initiative (reference 026019 ESTEEM). | |
| dc.description.abstract | We report on the synthesis of Cr^3^+-doped sodium titanate nanotubes and nanoribbons by a hydrothermal method. The presence of dopant ions in these nanostructures was confirmed by high angle annular dark field scanning transmission electron microscopy in combination with electron energy loss spectroscopy measurements. Luminescence properties of undoped and Cr^3^+-doped sodium titanate nanotubes and nanoribbons were investigated by cathodoluminescence in the scanning electron microscope. A broad visible band in the range 1.7−2.7 eV is observed in these nanostructures. Such emission is similar to that observed in bulk anatase TiO_2 and titanate powders, and is related to TiO_6 octahedra, which is a common feature to all the samples investigated. Near-infrared emission, sometimes attributed to Ti^3^+ interstitials, is observed in bulk powders but is absent in the titanate nanotubes and nanoribbons. Incorporation of Cr^3^+ between the titanate layers of the nanostructures is revealed by the characteristic intraionic emission line at 1.791 eV. Sodium titanate nanoribbons appear to be an effective host for optically active Cr^3^+ ions, as compared with nanotubes or bulk powder. | |
| dc.description.department | Depto. de Física de Materiales | |
| dc.description.faculty | Fac. de Ciencias Físicas | |
| dc.description.refereed | TRUE | |
| dc.description.sponsorship | MEC (Ministerio de Educación y Ciencia, España) | |
| dc.description.sponsorship | Slovenian Research Agency | |
| dc.description.sponsorship | European Union Framework 6 Program | |
| dc.description.sponsorship | Integrated Infrastructure Initiative | |
| dc.description.status | pub | |
| dc.eprint.id | https://eprints.ucm.es/id/eprint/23727 | |
| dc.identifier.doi | 10.1021/jp1005132 | |
| dc.identifier.issn | 1932-7447 | |
| dc.identifier.officialurl | http://dx.doi.org/10.1021/jp1005132 | |
| dc.identifier.relatedurl | http://pubs.acs.org/ | |
| dc.identifier.uri | https://hdl.handle.net/20.500.14352/44034 | |
| dc.issue.number | 18 | |
| dc.journal.title | Journal of Physical Chemistry C | |
| dc.language.iso | eng | |
| dc.page.final | 8198 | |
| dc.page.initial | 8192 | |
| dc.publisher | American Chemical Society | |
| dc.relation.projectID | MAT2006-01259 | |
| dc.relation.projectID | MAT2009-07882 | |
| dc.relation.projectID | J2-9217 | |
| dc.relation.projectID | 026019 ESTEEM | |
| dc.rights.accessRights | open access | |
| dc.subject.cdu | 538.9 | |
| dc.subject.keyword | TiO_2 | |
| dc.subject.keyword | Oxide | |
| dc.subject.keyword | Luminescence | |
| dc.subject.keyword | Morphology | |
| dc.subject.keyword | Photoluminescence | |
| dc.subject.keyword | Nanostructures | |
| dc.subject.keyword | Nanoparticles | |
| dc.subject.keyword | Spectroscopy | |
| dc.subject.keyword | Growth | |
| dc.subject.keyword | States | |
| dc.subject.ucm | Física de materiales | |
| dc.title | Synthesis and Cathodoluminescence of Undoped and Cr^3^+-Doped Sodium Titanate Nanotubes and Nanoribbons | |
| dc.type | journal article | |
| dc.volume.number | 114 | |
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