On the nature of goethite, Mn-goethite and Co-goethite as supports for gold nanoparticles

Autores
Campo, Betiana Carla; Rosseler, Olivier; Alvarez, Mariana; Rueda, Elsa Haydee; Volpe, María Alicia
Año de publicación
2008
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Mn- and Co-substituted goethite (α-MnFeOOH and α-CoFeOOH) and pure goethite (α-FeOOH) were studied as supports for gold catalysts. The textural properties of these solids were studied by N2/77 K adsorption. Mn and Co substitutions gave rise to an increase of the specific surface area, as measured by BET equation. A DTA study indicated that the thermal stability of goethite was increased by Mn and Co incorporation. XRD analysis showed that both Mn and Co strongly modified goethite cell parameters, giving rise to an increase of the reducibility of both substituted oxyhydroxides, as measured by TPR. Three different samples were obtained by anchoring gold by direct anion exchange (DAE) method from HAuCl4: Au/α-FeOOH, Au/α-CoFeOOH and Au/α-MnFeOOH. FT-IR indicated that gold species were attached to OH goethite groups, while TEM analysis demonstrated that gold particles were in the nanometric range for all the samples. On pure goethite gold particles size distribution was relatively narrow, while for the cases of Au/α-MnFeOOH and Au/α-CoFeOOH a wide crystal size distribution were obtained. It is concluded that α-MnFeOOH and α-CoFeOOH are better supports for the gold particles since reducibility, thermal stability and specific surface area are higher than in the case of pure α-FeOOH. © 2007 Elsevier B.V. All rights reserved.
Fil: Campo, Betiana Carla. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Planta Piloto de Ingeniería Química. Universidad Nacional del Sur. Planta Piloto de Ingeniería Química; Argentina
Fil: Rosseler, Olivier. Centre National de la Recherche Scientifique; Francia
Fil: Alvarez, Mariana. Universidad Nacional del Sur; Argentina
Fil: Rueda, Elsa Haydee. Universidad Nacional del Sur; Argentina
Fil: Volpe, María Alicia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Planta Piloto de Ingeniería Química. Universidad Nacional del Sur. Planta Piloto de Ingeniería Química; Argentina
Materia
Co-Goethite
Goethite
Gold Nanoparticles
Mn-Goethite
Supported Gold Catalysts
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/62419
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/62419
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling On the nature of goethite, Mn-goethite and Co-goethite as supports for gold nanoparticlesCampo, Betiana CarlaRosseler, OlivierAlvarez, MarianaRueda, Elsa HaydeeVolpe, María AliciaCo-GoethiteGoethiteGold NanoparticlesMn-GoethiteSupported Gold Catalystshttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1Mn- and Co-substituted goethite (α-MnFeOOH and α-CoFeOOH) and pure goethite (α-FeOOH) were studied as supports for gold catalysts. The textural properties of these solids were studied by N2/77 K adsorption. Mn and Co substitutions gave rise to an increase of the specific surface area, as measured by BET equation. A DTA study indicated that the thermal stability of goethite was increased by Mn and Co incorporation. XRD analysis showed that both Mn and Co strongly modified goethite cell parameters, giving rise to an increase of the reducibility of both substituted oxyhydroxides, as measured by TPR. Three different samples were obtained by anchoring gold by direct anion exchange (DAE) method from HAuCl4: Au/α-FeOOH, Au/α-CoFeOOH and Au/α-MnFeOOH. FT-IR indicated that gold species were attached to OH goethite groups, while TEM analysis demonstrated that gold particles were in the nanometric range for all the samples. On pure goethite gold particles size distribution was relatively narrow, while for the cases of Au/α-MnFeOOH and Au/α-CoFeOOH a wide crystal size distribution were obtained. It is concluded that α-MnFeOOH and α-CoFeOOH are better supports for the gold particles since reducibility, thermal stability and specific surface area are higher than in the case of pure α-FeOOH. © 2007 Elsevier B.V. All rights reserved.Fil: Campo, Betiana Carla. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Planta Piloto de Ingeniería Química. Universidad Nacional del Sur. Planta Piloto de Ingeniería Química; ArgentinaFil: Rosseler, Olivier. Centre National de la Recherche Scientifique; FranciaFil: Alvarez, Mariana. Universidad Nacional del Sur; ArgentinaFil: Rueda, Elsa Haydee. Universidad Nacional del Sur; ArgentinaFil: Volpe, María Alicia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Planta Piloto de Ingeniería Química. Universidad Nacional del Sur. Planta Piloto de Ingeniería Química; ArgentinaElsevier Science Sa2008-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/62419Campo, Betiana Carla; Rosseler, Olivier; Alvarez, Mariana; Rueda, Elsa Haydee; Volpe, María Alicia; On the nature of goethite, Mn-goethite and Co-goethite as supports for gold nanoparticles; Elsevier Science Sa; Materials Chemistry and Physics; 109; 2-3; 6-2008; 448-4540254-0584CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.matchemphys.2007.12.014info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0254058407007407info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-10T13:07:27Zoai:ri.conicet.gov.ar:11336/62419instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-10 13:07:27.281CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv On the nature of goethite, Mn-goethite and Co-goethite as supports for gold nanoparticles
title On the nature of goethite, Mn-goethite and Co-goethite as supports for gold nanoparticles
spellingShingle On the nature of goethite, Mn-goethite and Co-goethite as supports for gold nanoparticles
Campo, Betiana Carla
Co-Goethite
Goethite
Gold Nanoparticles
Mn-Goethite
Supported Gold Catalysts
title_short On the nature of goethite, Mn-goethite and Co-goethite as supports for gold nanoparticles
title_full On the nature of goethite, Mn-goethite and Co-goethite as supports for gold nanoparticles
title_fullStr On the nature of goethite, Mn-goethite and Co-goethite as supports for gold nanoparticles
title_full_unstemmed On the nature of goethite, Mn-goethite and Co-goethite as supports for gold nanoparticles
title_sort On the nature of goethite, Mn-goethite and Co-goethite as supports for gold nanoparticles
dc.creator.none.fl_str_mv Campo, Betiana Carla
Rosseler, Olivier
Alvarez, Mariana
Rueda, Elsa Haydee
Volpe, María Alicia
author Campo, Betiana Carla
author_facet Campo, Betiana Carla
Rosseler, Olivier
Alvarez, Mariana
Rueda, Elsa Haydee
Volpe, María Alicia
author_role author
author2 Rosseler, Olivier
Alvarez, Mariana
Rueda, Elsa Haydee
Volpe, María Alicia
author2_role author
author
author
author
dc.subject.none.fl_str_mv Co-Goethite
Goethite
Gold Nanoparticles
Mn-Goethite
Supported Gold Catalysts
topic Co-Goethite
Goethite
Gold Nanoparticles
Mn-Goethite
Supported Gold Catalysts
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Mn- and Co-substituted goethite (α-MnFeOOH and α-CoFeOOH) and pure goethite (α-FeOOH) were studied as supports for gold catalysts. The textural properties of these solids were studied by N2/77 K adsorption. Mn and Co substitutions gave rise to an increase of the specific surface area, as measured by BET equation. A DTA study indicated that the thermal stability of goethite was increased by Mn and Co incorporation. XRD analysis showed that both Mn and Co strongly modified goethite cell parameters, giving rise to an increase of the reducibility of both substituted oxyhydroxides, as measured by TPR. Three different samples were obtained by anchoring gold by direct anion exchange (DAE) method from HAuCl4: Au/α-FeOOH, Au/α-CoFeOOH and Au/α-MnFeOOH. FT-IR indicated that gold species were attached to OH goethite groups, while TEM analysis demonstrated that gold particles were in the nanometric range for all the samples. On pure goethite gold particles size distribution was relatively narrow, while for the cases of Au/α-MnFeOOH and Au/α-CoFeOOH a wide crystal size distribution were obtained. It is concluded that α-MnFeOOH and α-CoFeOOH are better supports for the gold particles since reducibility, thermal stability and specific surface area are higher than in the case of pure α-FeOOH. © 2007 Elsevier B.V. All rights reserved.
Fil: Campo, Betiana Carla. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Planta Piloto de Ingeniería Química. Universidad Nacional del Sur. Planta Piloto de Ingeniería Química; Argentina
Fil: Rosseler, Olivier. Centre National de la Recherche Scientifique; Francia
Fil: Alvarez, Mariana. Universidad Nacional del Sur; Argentina
Fil: Rueda, Elsa Haydee. Universidad Nacional del Sur; Argentina
Fil: Volpe, María Alicia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Planta Piloto de Ingeniería Química. Universidad Nacional del Sur. Planta Piloto de Ingeniería Química; Argentina
description Mn- and Co-substituted goethite (α-MnFeOOH and α-CoFeOOH) and pure goethite (α-FeOOH) were studied as supports for gold catalysts. The textural properties of these solids were studied by N2/77 K adsorption. Mn and Co substitutions gave rise to an increase of the specific surface area, as measured by BET equation. A DTA study indicated that the thermal stability of goethite was increased by Mn and Co incorporation. XRD analysis showed that both Mn and Co strongly modified goethite cell parameters, giving rise to an increase of the reducibility of both substituted oxyhydroxides, as measured by TPR. Three different samples were obtained by anchoring gold by direct anion exchange (DAE) method from HAuCl4: Au/α-FeOOH, Au/α-CoFeOOH and Au/α-MnFeOOH. FT-IR indicated that gold species were attached to OH goethite groups, while TEM analysis demonstrated that gold particles were in the nanometric range for all the samples. On pure goethite gold particles size distribution was relatively narrow, while for the cases of Au/α-MnFeOOH and Au/α-CoFeOOH a wide crystal size distribution were obtained. It is concluded that α-MnFeOOH and α-CoFeOOH are better supports for the gold particles since reducibility, thermal stability and specific surface area are higher than in the case of pure α-FeOOH. © 2007 Elsevier B.V. All rights reserved.
publishDate 2008
dc.date.none.fl_str_mv 2008-06
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/62419
Campo, Betiana Carla; Rosseler, Olivier; Alvarez, Mariana; Rueda, Elsa Haydee; Volpe, María Alicia; On the nature of goethite, Mn-goethite and Co-goethite as supports for gold nanoparticles; Elsevier Science Sa; Materials Chemistry and Physics; 109; 2-3; 6-2008; 448-454
0254-0584
CONICET Digital
CONICET
url http://hdl.handle.net/11336/62419
identifier_str_mv Campo, Betiana Carla; Rosseler, Olivier; Alvarez, Mariana; Rueda, Elsa Haydee; Volpe, María Alicia; On the nature of goethite, Mn-goethite and Co-goethite as supports for gold nanoparticles; Elsevier Science Sa; Materials Chemistry and Physics; 109; 2-3; 6-2008; 448-454
0254-0584
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/j.matchemphys.2007.12.014
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0254058407007407
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier Science Sa
publisher.none.fl_str_mv Elsevier Science Sa
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 12.993085

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