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Growth of Nanostructured TiO2 Thin Films onto Lignocellulosic Fibers through Reactive DC Magnetron Sputtering

2023-05-14Artigo científico Acesso aberto
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dc.contributor.authorEleutério, Telmo
dc.contributor.authorSério, Susana
dc.contributor.authorVasconcelos, Helena C.
dc.contributor.institutionDF – Departamento de Física
dc.contributor.institutionLIBPhys-UNL
dc.contributor.pblMDPI - Multidisciplinary Digital Publishing Institute
dc.date.accessioned2023-07-12T22:20:00Z
dc.date.available2023-07-12T22:20:00Z
dc.date.issued2023-05-14
dc.descriptionFunding Information: This research was funded by (1) FEDER, through Programa Operacional Factores de Competitividade (COMPETE) and Fundação para a Ciência e a Tecnologia (FCT) by the project No. UIDP/FIS/04559/2020 (LIBPhys); (2) FEDER, through POACORES-Valorização e Desenvolvimento de Produtos da Conteira (Hedychium gardnerianum)-01-0247-FEDER-000011; (3) Regional Government of the Azores-Fundo Regional da Ciência e Tecnologia (Fellowship M3.1.a/F/040/2015). Publisher Copyright: © 2023 by the authors.
dc.description.abstractTiO2 thin films were deposited on ginger lily (Hedychium gardnerianum) fibers using a custom-made DC reactive magnetron sputtering system with Ar/O2 mixture at two O2/(O2 + Ar) ratios (50% O2 and 75% O2) and sputtering powers (500 and 1000 W), and their effects on the structure and surface morphology of TiO2 films were investigated. XRD analysis showed the presence of the mainly anatase phase in the deposited films, with a small fraction of rutile phase detected for TiO2 deposited with the higher oxygen percentage and sputtering power. SEM imaging revealed that the films exhibited distinct surface features depending on the deposition conditions. Specifically, films deposited with 50 O2 % and 1000 W exhibited porosity, while the films deposited under other conditions appeared either dense with a cauliflower-like appearance or displayed surface features resembling lines and mountain ranges of coalesced particles. The grain size of dense films increased with increasing sputtering power. The deposition conditions significantly affected the resulting surface topography, with an increase in surface roughness parameters observed for both power levels when the oxygen concentration in the deposition atmosphere was increased from 50% to 75%. The adhesion tests conducted using sonication and EDS analysis revealed that almost all of the studied films exhibited good adhesion, as evidenced by the atomic content (at. %) of Ti remaining intact after sonication, indicating good adhesion. However, the porous film exhibited a slightly lower adhesion grade, suggesting that the porous structure may have influenced the adhesion properties.en
dc.description.versionpublishersversion
dc.description.versionpublished
dc.format.extent18
dc.format.extent5818405
dc.identifier.doi10.3390/coatings13050922
dc.identifier.issn2079-6412
dc.identifier.otherPURE: 66001529
dc.identifier.otherPURE UUID: 52dd6f66-c76c-4cc5-9a7e-bf1cc2fa526d
dc.identifier.otherScopus: 85160418843
dc.identifier.otherWOS: 000997234700001
dc.identifier.urihttp://hdl.handle.net/10362/155185
dc.identifier.urlhttps://www.scopus.com/pages/publications/85160418843
dc.language.isoeng
dc.peerreviewedyes
dc.subjectHedychium gardnerianum
dc.subjectmagnetron sputtering
dc.subjectplant fibers
dc.subjectporous films
dc.subjecttitanium dioxide
dc.subjectSurfaces and Interfaces
dc.subjectSurfaces, Coatings and Films
dc.subjectMaterials Chemistry
dc.titleGrowth of Nanostructured TiO2 Thin Films onto Lignocellulosic Fibers through Reactive DC Magnetron Sputteringen
dc.title.subtitleA XRD and SEM Studyen
dc.typejournal article
degois.publication.issue5
degois.publication.titleCOATINGS
degois.publication.volume13
dspace.entity.typePublication
rcaap.rightsopenAccess

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