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Effect of the surfactant nature on the thermo-stability of surface modified SnO2 nanoparticles

dc.contributor.authorKawaguti, C. A. [UNESP]
dc.contributor.authorSantilli, Celso Valentim [UNESP]
dc.contributor.authorPuldnelli, S. H. [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T15:33:05Z
dc.date.available2014-05-20T15:33:05Z
dc.date.issued2008-11-01
dc.description.abstractThe modification of particle surface properties by the addition of small surfactant molecules in the initial sol is one strategy to minimize the strong tendency to aggregation and coarsening of nanoparticles; prepared from the sol-gel process. In this work. the effect of the nature of the surfactant, Tiron (R) (OH)(2)C6H2(SO3Na)(2) H2O, anionic) or Catechol (R) (C6H4-1,2-(OH)(2), non-ionic) or Maptac (R) (IN(CH3)(3)-(CH2)(3)NHCOC(CH2CH3)]Cl-+(-), cationic), grafted on the SnO2 nanoparticles on the mesoporosity of powders fired at 600 degrees C is presented. SnO2 powders were prepared from an one-pot sol-gel route in which the hydrolysis of SnCl4 center dot 5H(2)O in aqueous solution was carried out in presence of the surfactant. The Fourier transform infrared (FTIR) spectroscopy and gravimetric and differential thermo-analysis (TG/DTA) results show that the thermo-stability of surface grafted SnO2 nanoparticles obeys the following series: Tiron (R) > Catechol (R) > Maptac (R). The N-2 adsorption isotherms results evidence that the mesopores texture (specific surface area, pore volume and average pore size) can be tuned in a controlled way by increasing the amounts of Tiron (R) or Catecholo molecules grafted on the surface of SnO2 nanoparticles. (c) 2008 Elsevier B.V. All rights reserved.en
dc.description.affiliationUNESP, Inst Quim, BR-14800900 Araraquara, SP, Brazil
dc.description.affiliationUnespUNESP, Inst Quim, BR-14800900 Araraquara, SP, Brazil
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.format.extent4790-4794
dc.identifierhttp://dx.doi.org/10.1016/j.jnoncrysol.2008.04.030
dc.identifier.citationJournal of Non-crystalline Solids. Amsterdam: Elsevier B.V., v. 354, n. 42-44, p. 4790-4794, 2008.
dc.identifier.doi10.1016/j.jnoncrysol.2008.04.030
dc.identifier.issn0022-3093
dc.identifier.lattes5584298681870865
dc.identifier.orcid0000-0002-8356-8093
dc.identifier.urihttp://hdl.handle.net/11449/41810
dc.identifier.wosWOS:000260883400017
dc.language.isoeng
dc.publisherElsevier B.V.
dc.relation.ispartofJournal of Non-Crystalline Solids
dc.relation.ispartofjcr2.488
dc.relation.ispartofsjr0,722
dc.rights.accessRightsAcesso restritopt
dc.sourceWeb of Science
dc.subjectPorosityen
dc.subjectPowdersen
dc.subjectColloidsen
dc.subjectSol-gels (xerogels)en
dc.subjectSolution chemistryen
dc.subjectTin oxideen
dc.titleEffect of the surfactant nature on the thermo-stability of surface modified SnO2 nanoparticlesen
dc.typeArtigopt
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dcterms.rightsHolderElsevier B.V.
dspace.entity.typePublication
relation.isOrgUnitOfPublicationbc74a1ce-4c4c-4dad-8378-83962d76c4fd
relation.isOrgUnitOfPublication.latestForDiscoverybc74a1ce-4c4c-4dad-8378-83962d76c4fd
unesp.author.lattes5584298681870865[2]
unesp.author.orcid0000-0002-8356-8093[2]
unesp.campusUniversidade Estadual Paulista (UNESP), Instituto de Química, Araraquarapt
unesp.departmentFísico-Química - IQARpt

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