Nanostructured terbium-doped ceria spheres: Effect of dopants on their physical and chemical properties under reducing and oxidizing conditions

Autores
Acuña, Leandro Marcelo; Muñoz, Fernando Francisco; Albornoz, Cecilia Andrea; Leyva de Guglielmino, Ana Gabriela; Baker, Richard; Fuentes, Rodolfo Oscar
Año de publicación
2015
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
In this work, nanostructured Ce1−xTbxO2−δ (x = 0.1 and 0.2) spheres were synthesized by microwave assisted hydrothermal homogeneous co-precipitation and their properties were characterized by synchrotron radiation X-ray diffraction (SR-XRD), X-ray absorption spectroscopy (XAS) and scanning and high resolution electron microscopy (SEM and HRTEM) with energy dispersive X-ray spectroscopy (EDS). Spherical particles with average diameters around 200 nm were obtained in excellent yields. In order to compare the effect of the morphology on the physico-chemical properties, terbium-doped ceria nanopowders were also synthesized by a cation complexation method. In situ SR-XRD, X-ray absorption near-edge structure (XANES) and extended X-ray absorption fine structure (EXAFS) experiments were carried out under reducing and oxidizing conditions in order to investigate the redox behaviour of these materials and to evaluate the oxidation state ratios in the Ce3+/Ce4+ and Tb3+/Tb4+ couples. All of the Ce1−xTbxO2−δ samples were found to have a cubic crystal structure (Fm[3 with combining macron]m space group). The spheres were composed of nanoparticles with an average crystallite size of about 10 nm. In situ XRD experiments showed an increase in lattice parameters on reduction which was attributed to the reduction of Ce4+ and Tb4+ cations to Ce3+ and Tb3+, which have larger radii, and to the associated increase in the VO concentration. The effect of the synthesis method on structural properties was evident in that the percentage of Tb present as Tb3+ in the nanostructured spheres was larger than that in the nanopowders of the same elemental composition.
Fil: Acuña, Leandro Marcelo. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones Científicas y Técnicas de las Fuerzas Armadas. Centro de Investigaciones en Sólidos; Argentina
Fil: Muñoz, Fernando Francisco. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones Científicas y Técnicas de las Fuerzas Armadas. Centro de Investigaciones en Sólidos; Argentina
Fil: Albornoz, Cecilia Andrea. Comisión Nacional de Energía Atómica. Centro Atómico Constituyentes; Argentina
Fil: Leyva de Guglielmino, Ana Gabriela. Comisión Nacional de Energía Atómica. Centro Atómico Constituyentes; Argentina. Universidad Nacional de San Martín. Escuela de Ciencia y Tecnología; Argentina
Fil: Baker, Richard. University of St. Andrews; Reino Unido
Fil: Fuentes, Rodolfo Oscar. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Constituyentes; Argentina
Materia
NANOMATERIALS
X-RAY DIFFRACTION
X-RAY ABSORPTION SPECTROSCOPY
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:11336/118309
Acceder
id CONICETDig_7be56705d13a724ec5df07d01ff7906b
oai_identifier_str oai:ri.conicet.gov.ar:11336/118309
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Nanostructured terbium-doped ceria spheres: Effect of dopants on their physical and chemical properties under reducing and oxidizing conditionsAcuña, Leandro MarceloMuñoz, Fernando FranciscoAlbornoz, Cecilia AndreaLeyva de Guglielmino, Ana GabrielaBaker, RichardFuentes, Rodolfo OscarNANOMATERIALSX-RAY DIFFRACTIONX-RAY ABSORPTION SPECTROSCOPYhttps://purl.org/becyt/ford/2.10https://purl.org/becyt/ford/2In this work, nanostructured Ce1−xTbxO2−δ (x = 0.1 and 0.2) spheres were synthesized by microwave assisted hydrothermal homogeneous co-precipitation and their properties were characterized by synchrotron radiation X-ray diffraction (SR-XRD), X-ray absorption spectroscopy (XAS) and scanning and high resolution electron microscopy (SEM and HRTEM) with energy dispersive X-ray spectroscopy (EDS). Spherical particles with average diameters around 200 nm were obtained in excellent yields. In order to compare the effect of the morphology on the physico-chemical properties, terbium-doped ceria nanopowders were also synthesized by a cation complexation method. In situ SR-XRD, X-ray absorption near-edge structure (XANES) and extended X-ray absorption fine structure (EXAFS) experiments were carried out under reducing and oxidizing conditions in order to investigate the redox behaviour of these materials and to evaluate the oxidation state ratios in the Ce3+/Ce4+ and Tb3+/Tb4+ couples. All of the Ce1−xTbxO2−δ samples were found to have a cubic crystal structure (Fm[3 with combining macron]m space group). The spheres were composed of nanoparticles with an average crystallite size of about 10 nm. In situ XRD experiments showed an increase in lattice parameters on reduction which was attributed to the reduction of Ce4+ and Tb4+ cations to Ce3+ and Tb3+, which have larger radii, and to the associated increase in the VO concentration. The effect of the synthesis method on structural properties was evident in that the percentage of Tb present as Tb3+ in the nanostructured spheres was larger than that in the nanopowders of the same elemental composition.Fil: Acuña, Leandro Marcelo. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones Científicas y Técnicas de las Fuerzas Armadas. Centro de Investigaciones en Sólidos; ArgentinaFil: Muñoz, Fernando Francisco. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones Científicas y Técnicas de las Fuerzas Armadas. Centro de Investigaciones en Sólidos; ArgentinaFil: Albornoz, Cecilia Andrea. Comisión Nacional de Energía Atómica. Centro Atómico Constituyentes; ArgentinaFil: Leyva de Guglielmino, Ana Gabriela. Comisión Nacional de Energía Atómica. Centro Atómico Constituyentes; Argentina. Universidad Nacional de San Martín. Escuela de Ciencia y Tecnología; ArgentinaFil: Baker, Richard. University of St. Andrews; Reino UnidoFil: Fuentes, Rodolfo Oscar. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Constituyentes; ArgentinaRoyal Society of Chemistry2015-08-30info: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/11336/118309Acuña, Leandro Marcelo; Muñoz, Fernando Francisco; Albornoz, Cecilia Andrea; Leyva de Guglielmino, Ana Gabriela; Baker, Richard; et al.; Nanostructured terbium-doped ceria spheres: Effect of dopants on their physical and chemical properties under reducing and oxidizing conditions; Royal Society of Chemistry; Journal of Materials Chemistry A; 3; 31; 30-8-2015; 16120-161312050-74962050-7488CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1039/C5TA02535Dinfo:eu-repo/semantics/altIdentifier/url/https://pubs.rsc.org/en/content/articlelanding/2015/TA/C5TA02535D#!divAbstractinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:39:07Zoai:ri.conicet.gov.ar:11336/118309instacron: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:34982025-09-29 09:39:07.772CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Nanostructured terbium-doped ceria spheres: Effect of dopants on their physical and chemical properties under reducing and oxidizing conditions
title Nanostructured terbium-doped ceria spheres: Effect of dopants on their physical and chemical properties under reducing and oxidizing conditions
spellingShingle Nanostructured terbium-doped ceria spheres: Effect of dopants on their physical and chemical properties under reducing and oxidizing conditions
Acuña, Leandro Marcelo
NANOMATERIALS
X-RAY DIFFRACTION
X-RAY ABSORPTION SPECTROSCOPY
title_short Nanostructured terbium-doped ceria spheres: Effect of dopants on their physical and chemical properties under reducing and oxidizing conditions
title_full Nanostructured terbium-doped ceria spheres: Effect of dopants on their physical and chemical properties under reducing and oxidizing conditions
title_fullStr Nanostructured terbium-doped ceria spheres: Effect of dopants on their physical and chemical properties under reducing and oxidizing conditions
title_full_unstemmed Nanostructured terbium-doped ceria spheres: Effect of dopants on their physical and chemical properties under reducing and oxidizing conditions
title_sort Nanostructured terbium-doped ceria spheres: Effect of dopants on their physical and chemical properties under reducing and oxidizing conditions
dc.creator.none.fl_str_mv Acuña, Leandro Marcelo
Muñoz, Fernando Francisco
Albornoz, Cecilia Andrea
Leyva de Guglielmino, Ana Gabriela
Baker, Richard
Fuentes, Rodolfo Oscar
author Acuña, Leandro Marcelo
author_facet Acuña, Leandro Marcelo
Muñoz, Fernando Francisco
Albornoz, Cecilia Andrea
Leyva de Guglielmino, Ana Gabriela
Baker, Richard
Fuentes, Rodolfo Oscar
author_role author
author2 Muñoz, Fernando Francisco
Albornoz, Cecilia Andrea
Leyva de Guglielmino, Ana Gabriela
Baker, Richard
Fuentes, Rodolfo Oscar
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv NANOMATERIALS
X-RAY DIFFRACTION
X-RAY ABSORPTION SPECTROSCOPY
topic NANOMATERIALS
X-RAY DIFFRACTION
X-RAY ABSORPTION SPECTROSCOPY
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.10
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv In this work, nanostructured Ce1−xTbxO2−δ (x = 0.1 and 0.2) spheres were synthesized by microwave assisted hydrothermal homogeneous co-precipitation and their properties were characterized by synchrotron radiation X-ray diffraction (SR-XRD), X-ray absorption spectroscopy (XAS) and scanning and high resolution electron microscopy (SEM and HRTEM) with energy dispersive X-ray spectroscopy (EDS). Spherical particles with average diameters around 200 nm were obtained in excellent yields. In order to compare the effect of the morphology on the physico-chemical properties, terbium-doped ceria nanopowders were also synthesized by a cation complexation method. In situ SR-XRD, X-ray absorption near-edge structure (XANES) and extended X-ray absorption fine structure (EXAFS) experiments were carried out under reducing and oxidizing conditions in order to investigate the redox behaviour of these materials and to evaluate the oxidation state ratios in the Ce3+/Ce4+ and Tb3+/Tb4+ couples. All of the Ce1−xTbxO2−δ samples were found to have a cubic crystal structure (Fm[3 with combining macron]m space group). The spheres were composed of nanoparticles with an average crystallite size of about 10 nm. In situ XRD experiments showed an increase in lattice parameters on reduction which was attributed to the reduction of Ce4+ and Tb4+ cations to Ce3+ and Tb3+, which have larger radii, and to the associated increase in the VO concentration. The effect of the synthesis method on structural properties was evident in that the percentage of Tb present as Tb3+ in the nanostructured spheres was larger than that in the nanopowders of the same elemental composition.
Fil: Acuña, Leandro Marcelo. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones Científicas y Técnicas de las Fuerzas Armadas. Centro de Investigaciones en Sólidos; Argentina
Fil: Muñoz, Fernando Francisco. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones Científicas y Técnicas de las Fuerzas Armadas. Centro de Investigaciones en Sólidos; Argentina
Fil: Albornoz, Cecilia Andrea. Comisión Nacional de Energía Atómica. Centro Atómico Constituyentes; Argentina
Fil: Leyva de Guglielmino, Ana Gabriela. Comisión Nacional de Energía Atómica. Centro Atómico Constituyentes; Argentina. Universidad Nacional de San Martín. Escuela de Ciencia y Tecnología; Argentina
Fil: Baker, Richard. University of St. Andrews; Reino Unido
Fil: Fuentes, Rodolfo Oscar. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Constituyentes; Argentina
description In this work, nanostructured Ce1−xTbxO2−δ (x = 0.1 and 0.2) spheres were synthesized by microwave assisted hydrothermal homogeneous co-precipitation and their properties were characterized by synchrotron radiation X-ray diffraction (SR-XRD), X-ray absorption spectroscopy (XAS) and scanning and high resolution electron microscopy (SEM and HRTEM) with energy dispersive X-ray spectroscopy (EDS). Spherical particles with average diameters around 200 nm were obtained in excellent yields. In order to compare the effect of the morphology on the physico-chemical properties, terbium-doped ceria nanopowders were also synthesized by a cation complexation method. In situ SR-XRD, X-ray absorption near-edge structure (XANES) and extended X-ray absorption fine structure (EXAFS) experiments were carried out under reducing and oxidizing conditions in order to investigate the redox behaviour of these materials and to evaluate the oxidation state ratios in the Ce3+/Ce4+ and Tb3+/Tb4+ couples. All of the Ce1−xTbxO2−δ samples were found to have a cubic crystal structure (Fm[3 with combining macron]m space group). The spheres were composed of nanoparticles with an average crystallite size of about 10 nm. In situ XRD experiments showed an increase in lattice parameters on reduction which was attributed to the reduction of Ce4+ and Tb4+ cations to Ce3+ and Tb3+, which have larger radii, and to the associated increase in the VO concentration. The effect of the synthesis method on structural properties was evident in that the percentage of Tb present as Tb3+ in the nanostructured spheres was larger than that in the nanopowders of the same elemental composition.
publishDate 2015
dc.date.none.fl_str_mv 2015-08-30
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/11336/118309
Acuña, Leandro Marcelo; Muñoz, Fernando Francisco; Albornoz, Cecilia Andrea; Leyva de Guglielmino, Ana Gabriela; Baker, Richard; et al.; Nanostructured terbium-doped ceria spheres: Effect of dopants on their physical and chemical properties under reducing and oxidizing conditions; Royal Society of Chemistry; Journal of Materials Chemistry A; 3; 31; 30-8-2015; 16120-16131
2050-7496
2050-7488
CONICET Digital
CONICET
url http://hdl.handle.net/11336/118309
identifier_str_mv Acuña, Leandro Marcelo; Muñoz, Fernando Francisco; Albornoz, Cecilia Andrea; Leyva de Guglielmino, Ana Gabriela; Baker, Richard; et al.; Nanostructured terbium-doped ceria spheres: Effect of dopants on their physical and chemical properties under reducing and oxidizing conditions; Royal Society of Chemistry; Journal of Materials Chemistry A; 3; 31; 30-8-2015; 16120-16131
2050-7496
2050-7488
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1039/C5TA02535D
info:eu-repo/semantics/altIdentifier/url/https://pubs.rsc.org/en/content/articlelanding/2015/TA/C5TA02535D#!divAbstract
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 Royal Society of Chemistry
publisher.none.fl_str_mv Royal Society of Chemistry
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 13.070432

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