Nanocomposites materials generated from a spray
Autor(a) principal: | |
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Data de Publicação: | 2009 |
Outros Autores: | , , , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1590/S0103-97332009000200009 http://hdl.handle.net/11449/25990 |
Resumo: | The Spray Pyrolysis (SP) process has been employed at moderate temperature (470-970 K) for the synthesis of micro- and nano-particles of hydrated metal oxides and of related nanocomposites. It has been applied to iron nitrate solutions, without or with the addition of sodium chloride as a flux. After removal of the flux, nanocomposites of ferrihydrite (5Fe2O3,9H2O) / hematite (α- Fe2O3) / and an amorphous Fe2O3 are obtained, with surface area 140 m²/g. It has been applied also to a sol of Aluminum-tri-sec-butoxide, without or with activation by europium or terbium ions. Boehmite (γ-AlOOH) powders are synthesized at 470 K, with surface area equal to 180 m²/g. Transition alumina (γ-Al2O3) are synthesized at 970 K. Nanocomposites made by reaction of the boehmite or γ-Al2O3 particles with the amino acid asparagin (ASN) have been prepared and characterized. The luminescence of the Eu3+ or Tb3+ doped nanocomposites has been investigated: they can be considered as bio-compatible luminescent nanoparticles. |
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spelling |
Nanocomposites materials generated from a spraySpray-pyrolysisNano-powdersFerrihydriteHematiteBoehmiteAluminaThe Spray Pyrolysis (SP) process has been employed at moderate temperature (470-970 K) for the synthesis of micro- and nano-particles of hydrated metal oxides and of related nanocomposites. It has been applied to iron nitrate solutions, without or with the addition of sodium chloride as a flux. After removal of the flux, nanocomposites of ferrihydrite (5Fe2O3,9H2O) / hematite (α- Fe2O3) / and an amorphous Fe2O3 are obtained, with surface area 140 m²/g. It has been applied also to a sol of Aluminum-tri-sec-butoxide, without or with activation by europium or terbium ions. Boehmite (γ-AlOOH) powders are synthesized at 470 K, with surface area equal to 180 m²/g. Transition alumina (γ-Al2O3) are synthesized at 970 K. Nanocomposites made by reaction of the boehmite or γ-Al2O3 particles with the amino acid asparagin (ASN) have been prepared and characterized. The luminescence of the Eu3+ or Tb3+ doped nanocomposites has been investigated: they can be considered as bio-compatible luminescent nanoparticles.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)UNESP Institute of ChemistryUniversité Paul Sabatier Centre d'Elaboration de Matériaux et d'Etudes Structurales UPRUNESP Institute of ChemistrySociedade Brasileira de FísicaUniversidade Estadual Paulista (Unesp)Université Paul Sabatier Centre d'Elaboration de Matériaux et d'Etudes Structurales UPRMarques, Rodrigo Fernando Costa [UNESP]Caiut, J. M. A. [UNESP]Paiva-Santos, C. O. [UNESP]Ribeiro, Sidney José Lima [UNESP]Messaddeq, Younes [UNESP]Garcia, C.Neumeyer, D.Dexpert, H.Verelst, M.Dexpert-Ghys, J.2014-05-20T14:19:56Z2014-05-20T14:19:56Z2009-04-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article176-181application/pdfhttp://dx.doi.org/10.1590/S0103-97332009000200009Brazilian Journal of Physics. Sociedade Brasileira de Física, v. 39, n. 1a, p. 176-181, 2009.0103-9733http://hdl.handle.net/11449/2599010.1590/S0103-97332009000200009S0103-97332009000200009WOS:000267893800009S0103-97332009000200009.pdf2115942621694174644604746303465429985038419178150000-0003-3286-94400000-0003-0195-3885SciELOreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengBrazilian Journal of Physics1.0820,276info:eu-repo/semantics/openAccess2023-10-20T06:08:16Zoai:repositorio.unesp.br:11449/25990Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T15:28:26.455908Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Nanocomposites materials generated from a spray |
title |
Nanocomposites materials generated from a spray |
spellingShingle |
Nanocomposites materials generated from a spray Marques, Rodrigo Fernando Costa [UNESP] Spray-pyrolysis Nano-powders Ferrihydrite Hematite Boehmite Alumina |
title_short |
Nanocomposites materials generated from a spray |
title_full |
Nanocomposites materials generated from a spray |
title_fullStr |
Nanocomposites materials generated from a spray |
title_full_unstemmed |
Nanocomposites materials generated from a spray |
title_sort |
Nanocomposites materials generated from a spray |
author |
Marques, Rodrigo Fernando Costa [UNESP] |
author_facet |
Marques, Rodrigo Fernando Costa [UNESP] Caiut, J. M. A. [UNESP] Paiva-Santos, C. O. [UNESP] Ribeiro, Sidney José Lima [UNESP] Messaddeq, Younes [UNESP] Garcia, C. Neumeyer, D. Dexpert, H. Verelst, M. Dexpert-Ghys, J. |
author_role |
author |
author2 |
Caiut, J. M. A. [UNESP] Paiva-Santos, C. O. [UNESP] Ribeiro, Sidney José Lima [UNESP] Messaddeq, Younes [UNESP] Garcia, C. Neumeyer, D. Dexpert, H. Verelst, M. Dexpert-Ghys, J. |
author2_role |
author author author author author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) Université Paul Sabatier Centre d'Elaboration de Matériaux et d'Etudes Structurales UPR |
dc.contributor.author.fl_str_mv |
Marques, Rodrigo Fernando Costa [UNESP] Caiut, J. M. A. [UNESP] Paiva-Santos, C. O. [UNESP] Ribeiro, Sidney José Lima [UNESP] Messaddeq, Younes [UNESP] Garcia, C. Neumeyer, D. Dexpert, H. Verelst, M. Dexpert-Ghys, J. |
dc.subject.por.fl_str_mv |
Spray-pyrolysis Nano-powders Ferrihydrite Hematite Boehmite Alumina |
topic |
Spray-pyrolysis Nano-powders Ferrihydrite Hematite Boehmite Alumina |
description |
The Spray Pyrolysis (SP) process has been employed at moderate temperature (470-970 K) for the synthesis of micro- and nano-particles of hydrated metal oxides and of related nanocomposites. It has been applied to iron nitrate solutions, without or with the addition of sodium chloride as a flux. After removal of the flux, nanocomposites of ferrihydrite (5Fe2O3,9H2O) / hematite (α- Fe2O3) / and an amorphous Fe2O3 are obtained, with surface area 140 m²/g. It has been applied also to a sol of Aluminum-tri-sec-butoxide, without or with activation by europium or terbium ions. Boehmite (γ-AlOOH) powders are synthesized at 470 K, with surface area equal to 180 m²/g. Transition alumina (γ-Al2O3) are synthesized at 970 K. Nanocomposites made by reaction of the boehmite or γ-Al2O3 particles with the amino acid asparagin (ASN) have been prepared and characterized. The luminescence of the Eu3+ or Tb3+ doped nanocomposites has been investigated: they can be considered as bio-compatible luminescent nanoparticles. |
publishDate |
2009 |
dc.date.none.fl_str_mv |
2009-04-01 2014-05-20T14:19:56Z 2014-05-20T14:19:56Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1590/S0103-97332009000200009 Brazilian Journal of Physics. Sociedade Brasileira de Física, v. 39, n. 1a, p. 176-181, 2009. 0103-9733 http://hdl.handle.net/11449/25990 10.1590/S0103-97332009000200009 S0103-97332009000200009 WOS:000267893800009 S0103-97332009000200009.pdf 2115942621694174 6446047463034654 2998503841917815 0000-0003-3286-9440 0000-0003-0195-3885 |
url |
http://dx.doi.org/10.1590/S0103-97332009000200009 http://hdl.handle.net/11449/25990 |
identifier_str_mv |
Brazilian Journal of Physics. Sociedade Brasileira de Física, v. 39, n. 1a, p. 176-181, 2009. 0103-9733 10.1590/S0103-97332009000200009 S0103-97332009000200009 WOS:000267893800009 S0103-97332009000200009.pdf 2115942621694174 6446047463034654 2998503841917815 0000-0003-3286-9440 0000-0003-0195-3885 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Brazilian Journal of Physics 1.082 0,276 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
176-181 application/pdf |
dc.publisher.none.fl_str_mv |
Sociedade Brasileira de Física |
publisher.none.fl_str_mv |
Sociedade Brasileira de Física |
dc.source.none.fl_str_mv |
SciELO reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808128515994812416 |