Room temperature polymorphism in WO_(3) produced by resistive heating of W wires

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dc.contributor.authorRodriguez Fernandez, Beatriz
dc.contributor.authorDolado, Jaime
dc.contributor.authorLópez Sánchez, Jesús
dc.contributor.authorHidalgo Alcalde, Pedro
dc.contributor.authorMéndez Martín, Bianchi
dc.date.accessioned2023-06-22T12:45:53Z
dc.date.available2023-06-22T12:45:53Z
dc.date.issued2023-03
dc.description© 2023 by the authors. Licensee MDPI, This work was supported by MICINN projects (RTI2018-097195-B-I00, PIE 2021-60-E-030, PIE 2010-6-OE-013 and PID2021-122562NB-I00). B.R. acknowledges financial support from MICINN (contract No. PRE2019-088162).
dc.description.abstractPolymorphous WO_(3) micro- and nanostructures have been synthesized by the controlled Joule heating of tungsten wires under ambient conditions in a few seconds. The growth on the wire surface is assisted by the electromigration process and it is further enhanced by the application of an external electric field through a pair of biased parallel copper plates. In this case, a high amount of WO_(3) material is also deposited on the copper electrodes, consisting of a few cm^(2) area. The temperature measurements of the W wire agrees with the values calculated by a finite element model, which has allowed us to establish the threshold density current to trigger the WO_(3) growth. The structural characterization of the produced microstructures accounts for the gamma-WO_(3) (monoclinic I), which is the common stable phase at room temperature, along with low temperature phases, known as delta-WO_(3) (triclinic) on structures formed on the wire surface and e-WO_(3) (monoclinic II) on material deposited on external electrodes. These phases allow for a high oxygen vacancies concentration, which is interesting in photocatalysis and sensing applications. The results could help to design experiments to produce oxide nanomaterials from other metal wires by this resistive heating method with scaling-up potential.
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 Ciencia e Innovación (MICINN) / FSE
dc.description.sponsorshipMinisterio de Ciencia e Innovación (MICINN)
dc.description.statuspub
dc.eprint.idhttps://eprints.ucm.es/id/eprint/77262
dc.identifier.doi10.3390/nano13050884
dc.identifier.issn2079-4991
dc.identifier.officialurlhttp://dx.doi.org/10.3390/nano13050884
dc.identifier.relatedurlhttps://www.mdpi.com/
dc.identifier.urihttps://hdl.handle.net/20.500.14352/73150
dc.issue.number5
dc.journal.titleNanomaterials
dc.language.isoeng
dc.publisherMDPI
dc.relation.projectID(RTI2018-097195-B-I00; PID2021-122562NB-I00)
dc.relation.projectIDPRE2019-088162
dc.relation.projectID(PIE 2021-60-E-030; PIE 2010-6-OE-013)
dc.rightsAtribución 3.0 España
dc.rights.accessRightsopen access
dc.rights.urihttps://creativecommons.org/licenses/by/3.0/es/
dc.subject.cdu538.9
dc.subject.keywordTungsten
dc.subject.keywordNanowires
dc.subject.keywordOxides
dc.subject.keywordRaman
dc.subject.keywordxXps
dc.subject.keywordTungsten trioxide
dc.subject.keywordPolymorphism
dc.subject.keywordJoule heating
dc.subject.keywordElectromigration
dc.subject.ucmFísica de materiales
dc.subject.ucmFísica del estado sólido
dc.subject.unesco2211 Física del Estado Sólido
dc.titleRoom temperature polymorphism in WO_(3) produced by resistive heating of W wires
dc.typejournal article
dc.volume.number13
dspace.entity.typePublication
relation.isAuthorOfPublicationc834e5a4-3450-4ff7-8ca1-663a43f050bb
relation.isAuthorOfPublication.latestForDiscoveryc834e5a4-3450-4ff7-8ca1-663a43f050bb
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