Morphological evolution of tin oxide nanobelts after phase transition

Página do item simplificado
dc.contributor.authorOrlandi, Marcelo Ornaghi [UNESP]
dc.contributor.authorRamirez, Antonio Jos
dc.contributor.authorLeite, Edson Roberto
dc.contributor.authorLongo, Elson [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionLab Nacl Luz Sincrotron
dc.contributor.institutionUniversidade Federal de São Carlos (UFSCar)
dc.date.accessioned2014-05-20T13:29:51Z
dc.date.available2014-05-20T13:29:51Z
dc.date.issued2008-03-01
dc.description.abstractThis article reports a study of the thermal stability and morphological changes in tin oxide nanobelts grown in the orthorhombic SnO phase. The nanobelts were heat-treated in a differential scanning calorimetry (DSC) furnace at 800 degrees C for I It in argon, oxygen, or synthetic air atmospheres. The samples were then characterized by DSC, X-ray diffraction (XRD), high resolution transmission electron microscopy (HRTEM), and high resolution field emission scanning electron microscopy (FE-SEM). The results confirmed that the orthorhombic SnO phase is thermodynamically unstable, causing the belts to transform into the SnO2 phase when heat-treated. During the phase transition, if oxygen is available in the furnace atmosphere, nanofibers grow at the edge of nanobelts at about 50 degrees of the belts' growth direction, while particles grow on the belt surface in the absence of oxygen. Although the decomposition process reduces the nanobelt cell volume by 22%, most belts remain monocrystalline after the heat treatment. The results confirm that phase transition is a decomposition process, which explains the morphological changes in the belts based on metallic tin generated in the process.en
dc.description.affiliationUniv Estadual Paulista, Dept Quim & Fis, BR-15385000 Ilha Solteira, SP, Brazil
dc.description.affiliationLab Nacl Luz Sincrotron, Campinas, SP, Brazil
dc.description.affiliationUniversidade Federal de São Carlos (UFSCar), Dept Quim, BR-13560 São Carlos, SP, Brazil
dc.description.affiliationUniv Estadual Paulista, Inst Quim, Araraquara, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Dept Quim & Fis, BR-15385000 Ilha Solteira, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Inst Quim, Araraquara, SP, Brazil
dc.format.extent1067-1072
dc.identifierhttp://dx.doi.org/10.1021/cg7009379
dc.identifier.citationCrystal Growth & Design. Washington: Amer Chemical Soc, v. 8, n. 3, p. 1067-1072, 2008.
dc.identifier.doi10.1021/cg7009379
dc.identifier.issn1528-7483
dc.identifier.lattes2305581567093057
dc.identifier.urihttp://hdl.handle.net/11449/10120
dc.identifier.wosWOS:000253800200053
dc.language.isoeng
dc.publisherAmer Chemical Soc
dc.relation.ispartofCrystal Growth & Design
dc.relation.ispartofjcr3.972
dc.relation.ispartofsjr1,154
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.titleMorphological evolution of tin oxide nanobelts after phase transitionen
dc.typeArtigo
dcterms.licensehttp://pubs.acs.org/page/copyright/journals/faqs.html
dcterms.rightsHolderAmer Chemical Soc
unesp.author.lattes2305581567093057
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Engenharia, Ilha Solteirapt

Arquivos

Licença do Pacote
Agora exibindo 1 - 2 de 2
Nenhuma Miniatura disponível
Nome:
license.txt
Tamanho:
1.71 KB
Formato:
Item-specific license agreed upon to submission
Descrição:
Nenhuma Miniatura disponível
Nome:
license.txt
Tamanho:
1.71 KB
Formato:
Item-specific license agreed upon to submission
Descrição:

Coleções

Artigos - Física e Química - FEIS