Density improvement of the sol-gel dip-coated SnO2 films by chemical surface modification

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dc.contributor.authorRizzato, A. P.
dc.contributor.authorSantilli, Celso Valentim [UNESP]
dc.contributor.authorPulcinelli, Sandra Helena [UNESP]
dc.contributor.authorHammer, Peter [UNESP]
dc.contributor.authorBriois, V
dc.contributor.institutionUniv Paris 11
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T15:30:09Z
dc.date.available2014-05-20T15:30:09Z
dc.date.issued2005-01-01
dc.description.abstractWe compare the effect of organic (Tiron (R)) and inorganic (Mn(11)) additives on the low temperature (< 600 degrees C) densification of the sol-gel dip-coated SnO2 films. The structural and compositional properties of the samples were investigated by X-ray reflectometry (XRR), X-ray absorption spectroscopy (XAS) and X-ray photoelectron spectroscopy (XPS). The results suggest that the replacement of hydroxyl groups at the particle surface by Tiron (R) reduces the level of agglomeration of the sol, increasing the particles packing and the apparent density of the coatings. Undoped and Mn-doped films drawn from a Tiron (R) containing suspension show after firing at 500 degrees C a porosity reduction of 12 and 8.6%, respectively. The porosity decrease is less pronounced (4.3%) for the film without additives. Both XAS and XPS data show the presence of trivalent manganese. The formation of a non-homogeneous solid solution characterised by the presence of Mn(111) replacing tin atom near to the crystallite surface was evidenced by XAS. Additionally, XPS results reveal the presence of metallic Sn at the surface of films containing Tirono. (c) 2005 Elsevier Ltd. All rights reserved.en
dc.description.affiliationUniv Paris 11, LURE Ctr, F-91898 Orsay, France
dc.description.affiliationUNESP, Inst Chem, Araraquara, SP, Brazil
dc.description.affiliationUnespUNESP, Inst Chem, Araraquara, SP, Brazil
dc.format.extent2045-2049
dc.identifierhttp://dx.doi.org/10.1016/j.jeurceramsoc.2005.03.009
dc.identifier.citationJournal of the European Ceramic Society. Oxford: Elsevier B.V., v. 25, n. 12, p. 2045-2049, 2005.
dc.identifier.doi10.1016/j.jeurceramsoc.2005.03.009
dc.identifier.issn0955-2219
dc.identifier.lattes5584298681870865
dc.identifier.lattes9971202585286967
dc.identifier.lattes6466841023506131
dc.identifier.orcid0000-0002-3823-0050
dc.identifier.orcid0000-0002-8356-8093
dc.identifier.urihttp://hdl.handle.net/11449/39595
dc.identifier.wosWOS:000230569300017
dc.language.isoeng
dc.publisherElsevier B.V.
dc.relation.ispartofJournal of the European Ceramic Society
dc.relation.ispartofjcr3.794
dc.relation.ispartofsjr1,068
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectsol-gel processespt
dc.subjectfilmspt
dc.subjectfiringpt
dc.subjectporositypt
dc.subjectX-ray methodspt
dc.titleDensity improvement of the sol-gel dip-coated SnO2 films by chemical surface modificationen
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dcterms.rightsHolderElsevier B.V.
unesp.author.lattes9971202585286967
unesp.author.lattes6466841023506131[4]
unesp.author.lattes5584298681870865[2]
unesp.author.orcid0000-0002-3823-0050[4]
unesp.author.orcid0000-0002-8356-8093[2]
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Química, Araraquarapt

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Artigos - Físico Química - IQ