Cr doped titania microtubes and microrods synthesized by a vapor-solid method

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dc.contributor.authorCristian Vasquez, G.
dc.contributor.authorAndrea Peche-Herrero, M.
dc.contributor.authorMaestre Varea, David
dc.contributor.authorCremades Rodríguez, Ana Isabel
dc.contributor.authorRamirez-Castellanos, Julio
dc.contributor.authorGonzalez-Calbet, José M.
dc.contributor.authorPiqueras de Noriega, Javier
dc.date.accessioned2023-06-19T13:22:31Z
dc.date.available2023-06-19T13:22:31Z
dc.date.issued2013
dc.description© Royal Society of Chemistry
dc.description.abstractCr doped TiO_2 rutile nanoparticles have been used as precursor of microrods and microtubes grown by a vapor-solid method. The grown microstructures have nearly square cross-sections of a few microns wide and lengths of up to about 100 microns. By longer thermal treatments or higher growth temperatures, the ratio of microrods to microtubes increases. The presence of partially filled openings with growth steps in the internal faces of the tubes indicates that the tubes transform into rods by extended or intense thermal treatments, which enables to control the nature of the microstructures, tubes or rods, by varying the parameters of the thermal treatment. Cr incorporation has been found to be homogeneous along the growth axis, with amounts in the range from 1.2 to 2.8% of cationic fraction, which depend on the Cr content in the precursor and on the growth parameters. Optical activation of the Cr ions has been demonstrated by cathodoluminescence in the scanning electron microscopy, and crystallographic assessment of the structures has been carried out using Raman spectroscopy and electron backscattered diffraction.
dc.description.departmentDepto. de Física de Materiales
dc.description.facultyFac. de Ciencias Físicas
dc.description.refereedTRUE
dc.description.sponsorshipMEC
dc.description.statuspub
dc.eprint.idhttps://eprints.ucm.es/id/eprint/23697
dc.identifier.doi10.1039/c3ce40513c
dc.identifier.issn1466-8033
dc.identifier.officialurlhttp://dx.doi.org/10.1039/C3CE40513C
dc.identifier.relatedurlhttp://pubs.rsc.org
dc.identifier.urihttps://hdl.handle.net/20.500.14352/33403
dc.issue.number27
dc.journal.titleCrystEngComm
dc.page.final5495
dc.page.initial5490
dc.publisherRSC Royal Society of Chemistry
dc.relation.projectIDMAT2009-07882
dc.relation.projectIDMAT2012-39159
dc.relation.projectIDCSD 2009-00013
dc.rights.accessRightsmetadata only access
dc.subject.cdu538.9
dc.subject.keywordTio_2 Nanoparticles
dc.subject.keywordGrowth
dc.subject.keywordNanotubes
dc.subject.keywordLuminescence
dc.subject.keywordNanowires
dc.subject.keywordCrystals
dc.subject.keywordOxide
dc.subject.keywordPhotocatalysis
dc.subject.keywordGraphene
dc.subject.keywordDefects
dc.subject.ucmFísica de materiales
dc.titleCr doped titania microtubes and microrods synthesized by a vapor-solid method
dc.typejournal article
dc.volume.number15
dspace.entity.typePublication
relation.isAuthorOfPublication43cbf291-2f80-4902-8837-ea2a9ffaa702
relation.isAuthorOfPublicationda0d631e-edbf-434e-8bfd-d31fb2921840
relation.isAuthorOfPublication.latestForDiscovery43cbf291-2f80-4902-8837-ea2a9ffaa702
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