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Bacterial cellulose-silica organic-inorganic hybrids

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dc.contributor.authorBarud, H. S. [UNESP]
dc.contributor.authorAssuncao, R. M. N. [UNESP]
dc.contributor.authorMartines, M. A. U. [UNESP]
dc.contributor.authorDexpert-Ghys, J.
dc.contributor.authorMarques, R. F. C. [UNESP]
dc.contributor.authorMessaddeq, Y. [UNESP]
dc.contributor.authorRibeiro, S. J. L. [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade Federal de Uberlândia (UFU)
dc.contributor.institutionUniv Toulouse 3
dc.date.accessioned2014-05-20T13:29:51Z
dc.date.available2014-05-20T13:29:51Z
dc.date.issued2008-06-01
dc.description.abstractBacterial cellulose (BC) hydrated membranes present nanometric reticulated structure that can be used as a template in the preparation of new organic-inorganic hybrids. BC-silica hybrids were prepared from BC membranes and tetraethoxysilane, (TEOS) at neutral pH conditions at room temperature. Macroscopically homogeneous membranes were obtained containing up to 66 wt.% of silica spheres, 20-30 nm diameter. Scanning electron micrographs clearly show the silica spheres attached to cellulose microfibrils. By removing the cellulose, the silica spheres can be easily recovered. The new hybrids are stable up to 300 degrees C and display a broad emission band under UV excitation assigned to oxygen-related defects at the silica particles surface. Emission color can be tuned by changing the excitation wavelength.en
dc.description.affiliationSão Paulo State Univ UNESP, Inst Chem, BR-14801970 Araraquara, SP, Brazil
dc.description.affiliationUniversidade Federal de Uberlândia (UFU), Inst Chem, BR-38400902 Uberlandia, MG, Brazil
dc.description.affiliationSão Paulo State Univ UNESP, FEIS, Dept Chem & Phys, BR-15385000 Ilha Solteira, SP, Brazil
dc.description.affiliationUniv Toulouse 3, UPR N 8011, Ctr Elaborat Mat & Etud Struct, F-31055 Toulouse, France
dc.description.affiliationUnespSão Paulo State Univ UNESP, Inst Chem, BR-14801970 Araraquara, SP, Brazil
dc.description.affiliationUnespSão Paulo State Univ UNESP, FEIS, Dept Chem & Phys, BR-15385000 Ilha Solteira, SP, Brazil
dc.format.extent363-367
dc.identifierhttp://dx.doi.org/10.1007/s10971-007-1669-9
dc.identifier.citationJournal of Sol-gel Science and Technology. Dordrecht: Springer, v. 46, n. 3, p. 363-367, 2008.
dc.identifier.doi10.1007/s10971-007-1669-9
dc.identifier.issn0928-0707
dc.identifier.lattes2115942621694174
dc.identifier.orcid0000-0003-0195-3885
dc.identifier.urihttp://hdl.handle.net/11449/10121
dc.identifier.wosWOS:000255753300017
dc.language.isoeng
dc.publisherSpringer
dc.relation.ispartofJournal of Sol-Gel Science and Technology
dc.relation.ispartofjcr1.745
dc.relation.ispartofsjr0,477
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectbacterial celluloseen
dc.subjectsilicaen
dc.subjectorganic-inorganic hybridsen
dc.titleBacterial cellulose-silica organic-inorganic hybridsen
dc.typeArtigo
dcterms.licensehttp://www.springer.com/open+access/authors+rights?SGWID=0-176704-12-683201-0
dcterms.rightsHolderSpringer
dspace.entity.typePublication
unesp.author.lattes2115942621694174[5]
unesp.author.orcid0000-0003-3286-9440[7]
unesp.author.orcid0000-0003-0195-3885[5]
unesp.campusUniversidade Estadual Paulista (UNESP), Faculdade de Engenharia, Ilha Solteirapt
unesp.departmentFísica e Química - FEISpt

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Ilha Solteira - FEIS - Faculdade de Engenharia