The interaction of metal oxide surfaces with complexing agents dissolved in water

Autores
Blesa, Miguel Angel; Weisz, Ariel D.; Morando, Pedro Juan; Salfity, José Adrián; Magaz, María del Carmen; Regazzoni, Alberto Ernesto
Año de publicación
2000
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Upon exposure to liquid water or to aqueous solutions, the surfaces of metal oxide particles or films undergo a series of chemical reactions that are dictated to a large extent by the chemistry of the metal ions involved. These reactions involve surface hydroxylation and hydration (dissociative and non-dissociative water chemisorption), chemisorption of solutes and charge transfer reactions. The present review focuses on the chemisorption of anions, which is a surface complexation reaction. In simple cases, chemical equilibria may be written, and quantified by heterogeneous stability constants that resemble the analogous homogeneous ones. This approach has been practiced for more than 20 years, and in selected cases values are available for a discussion of stability trends, even though the stability constant values are sensitive to double-layer modeling and to the history of the metal oxide used. Most of the stability constants have been derived in conventional ways from measurements of the corresponding adsorption isotherms, a procedure that does not provide structural information. Modeling of the shape and pH dependence of adsorption isotherms has been however used to propose various modes of adsorption, in order to derive, for instance, the speciation of surface complexes as a function of ligand concentration and pH. Presently, structural techniques are available to probe directly into the structure of the surface ensembles; the use of UV-vis, IR, magnetic and surface spectroscopies, together with EXAFS and SEXAFS has provided credence to the surface complexation approach, as discussed in the present review for selected cases. In particular, attenuated total refection FTIR has proved to be a powerful tool to derive the surface speciation in selected cases. The reactivity patterns of the surface complexes is being currently explored. The catalysis of ester hydrolysis, the rates and mechanisms of oxide dissolution, heterogeneous charge transfer reactions and the photocatalytic reactions of oxidation of organic compounds can all, in certain cases, be described as reactions of specific surface complexes; some relevant examples are discussed.
Fil: Blesa, Miguel Angel. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Constituyentes; Argentina
Fil: Weisz, Ariel D.. Comisión Nacional de Energía Atómica. Centro Atómico Constituyentes; Argentina
Fil: Morando, Pedro Juan. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Constituyentes; Argentina
Fil: Salfity, José Adrián. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Constituyentes; Argentina
Fil: Magaz, María del Carmen. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Constituyentes; Argentina
Fil: Regazzoni, Alberto Ernesto. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Constituyentes; Argentina
Materia
Chemisorption
Heterogeneous Catalysis
Metal Oxides
Oxide Dissolution
Surface Complexes
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:11336/71663
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/71663
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network_name_str CONICET Digital (CONICET)
spelling The interaction of metal oxide surfaces with complexing agents dissolved in waterBlesa, Miguel AngelWeisz, Ariel D.Morando, Pedro JuanSalfity, José AdriánMagaz, María del CarmenRegazzoni, Alberto ErnestoChemisorptionHeterogeneous CatalysisMetal OxidesOxide DissolutionSurface Complexeshttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1Upon exposure to liquid water or to aqueous solutions, the surfaces of metal oxide particles or films undergo a series of chemical reactions that are dictated to a large extent by the chemistry of the metal ions involved. These reactions involve surface hydroxylation and hydration (dissociative and non-dissociative water chemisorption), chemisorption of solutes and charge transfer reactions. The present review focuses on the chemisorption of anions, which is a surface complexation reaction. In simple cases, chemical equilibria may be written, and quantified by heterogeneous stability constants that resemble the analogous homogeneous ones. This approach has been practiced for more than 20 years, and in selected cases values are available for a discussion of stability trends, even though the stability constant values are sensitive to double-layer modeling and to the history of the metal oxide used. Most of the stability constants have been derived in conventional ways from measurements of the corresponding adsorption isotherms, a procedure that does not provide structural information. Modeling of the shape and pH dependence of adsorption isotherms has been however used to propose various modes of adsorption, in order to derive, for instance, the speciation of surface complexes as a function of ligand concentration and pH. Presently, structural techniques are available to probe directly into the structure of the surface ensembles; the use of UV-vis, IR, magnetic and surface spectroscopies, together with EXAFS and SEXAFS has provided credence to the surface complexation approach, as discussed in the present review for selected cases. In particular, attenuated total refection FTIR has proved to be a powerful tool to derive the surface speciation in selected cases. The reactivity patterns of the surface complexes is being currently explored. The catalysis of ester hydrolysis, the rates and mechanisms of oxide dissolution, heterogeneous charge transfer reactions and the photocatalytic reactions of oxidation of organic compounds can all, in certain cases, be described as reactions of specific surface complexes; some relevant examples are discussed.Fil: Blesa, Miguel Angel. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Constituyentes; ArgentinaFil: Weisz, Ariel D.. Comisión Nacional de Energía Atómica. Centro Atómico Constituyentes; ArgentinaFil: Morando, Pedro Juan. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Constituyentes; ArgentinaFil: Salfity, José Adrián. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Constituyentes; ArgentinaFil: Magaz, María del Carmen. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Constituyentes; ArgentinaFil: Regazzoni, Alberto Ernesto. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Constituyentes; ArgentinaElsevier Science Sa2000-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/71663Blesa, Miguel Angel; Weisz, Ariel D.; Morando, Pedro Juan; Salfity, José Adrián; Magaz, María del Carmen; et al.; The interaction of metal oxide surfaces with complexing agents dissolved in water; Elsevier Science Sa; Coordination Chemistry Reviews; 196; 1; 1-2000; 31-630010-8545CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/S0010-8545(99)00005-3info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0010854599000053info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:45:55Zoai:ri.conicet.gov.ar:11336/71663instacron: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 09:45:55.721CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv The interaction of metal oxide surfaces with complexing agents dissolved in water
title The interaction of metal oxide surfaces with complexing agents dissolved in water
spellingShingle The interaction of metal oxide surfaces with complexing agents dissolved in water
Blesa, Miguel Angel
Chemisorption
Heterogeneous Catalysis
Metal Oxides
Oxide Dissolution
Surface Complexes
title_short The interaction of metal oxide surfaces with complexing agents dissolved in water
title_full The interaction of metal oxide surfaces with complexing agents dissolved in water
title_fullStr The interaction of metal oxide surfaces with complexing agents dissolved in water
title_full_unstemmed The interaction of metal oxide surfaces with complexing agents dissolved in water
title_sort The interaction of metal oxide surfaces with complexing agents dissolved in water
dc.creator.none.fl_str_mv Blesa, Miguel Angel
Weisz, Ariel D.
Morando, Pedro Juan
Salfity, José Adrián
Magaz, María del Carmen
Regazzoni, Alberto Ernesto
author Blesa, Miguel Angel
author_facet Blesa, Miguel Angel
Weisz, Ariel D.
Morando, Pedro Juan
Salfity, José Adrián
Magaz, María del Carmen
Regazzoni, Alberto Ernesto
author_role author
author2 Weisz, Ariel D.
Morando, Pedro Juan
Salfity, José Adrián
Magaz, María del Carmen
Regazzoni, Alberto Ernesto
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Chemisorption
Heterogeneous Catalysis
Metal Oxides
Oxide Dissolution
Surface Complexes
topic Chemisorption
Heterogeneous Catalysis
Metal Oxides
Oxide Dissolution
Surface Complexes
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Upon exposure to liquid water or to aqueous solutions, the surfaces of metal oxide particles or films undergo a series of chemical reactions that are dictated to a large extent by the chemistry of the metal ions involved. These reactions involve surface hydroxylation and hydration (dissociative and non-dissociative water chemisorption), chemisorption of solutes and charge transfer reactions. The present review focuses on the chemisorption of anions, which is a surface complexation reaction. In simple cases, chemical equilibria may be written, and quantified by heterogeneous stability constants that resemble the analogous homogeneous ones. This approach has been practiced for more than 20 years, and in selected cases values are available for a discussion of stability trends, even though the stability constant values are sensitive to double-layer modeling and to the history of the metal oxide used. Most of the stability constants have been derived in conventional ways from measurements of the corresponding adsorption isotherms, a procedure that does not provide structural information. Modeling of the shape and pH dependence of adsorption isotherms has been however used to propose various modes of adsorption, in order to derive, for instance, the speciation of surface complexes as a function of ligand concentration and pH. Presently, structural techniques are available to probe directly into the structure of the surface ensembles; the use of UV-vis, IR, magnetic and surface spectroscopies, together with EXAFS and SEXAFS has provided credence to the surface complexation approach, as discussed in the present review for selected cases. In particular, attenuated total refection FTIR has proved to be a powerful tool to derive the surface speciation in selected cases. The reactivity patterns of the surface complexes is being currently explored. The catalysis of ester hydrolysis, the rates and mechanisms of oxide dissolution, heterogeneous charge transfer reactions and the photocatalytic reactions of oxidation of organic compounds can all, in certain cases, be described as reactions of specific surface complexes; some relevant examples are discussed.
Fil: Blesa, Miguel Angel. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Constituyentes; Argentina
Fil: Weisz, Ariel D.. Comisión Nacional de Energía Atómica. Centro Atómico Constituyentes; Argentina
Fil: Morando, Pedro Juan. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Constituyentes; Argentina
Fil: Salfity, José Adrián. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Constituyentes; Argentina
Fil: Magaz, María del Carmen. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Constituyentes; Argentina
Fil: Regazzoni, Alberto Ernesto. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Constituyentes; Argentina
description Upon exposure to liquid water or to aqueous solutions, the surfaces of metal oxide particles or films undergo a series of chemical reactions that are dictated to a large extent by the chemistry of the metal ions involved. These reactions involve surface hydroxylation and hydration (dissociative and non-dissociative water chemisorption), chemisorption of solutes and charge transfer reactions. The present review focuses on the chemisorption of anions, which is a surface complexation reaction. In simple cases, chemical equilibria may be written, and quantified by heterogeneous stability constants that resemble the analogous homogeneous ones. This approach has been practiced for more than 20 years, and in selected cases values are available for a discussion of stability trends, even though the stability constant values are sensitive to double-layer modeling and to the history of the metal oxide used. Most of the stability constants have been derived in conventional ways from measurements of the corresponding adsorption isotherms, a procedure that does not provide structural information. Modeling of the shape and pH dependence of adsorption isotherms has been however used to propose various modes of adsorption, in order to derive, for instance, the speciation of surface complexes as a function of ligand concentration and pH. Presently, structural techniques are available to probe directly into the structure of the surface ensembles; the use of UV-vis, IR, magnetic and surface spectroscopies, together with EXAFS and SEXAFS has provided credence to the surface complexation approach, as discussed in the present review for selected cases. In particular, attenuated total refection FTIR has proved to be a powerful tool to derive the surface speciation in selected cases. The reactivity patterns of the surface complexes is being currently explored. The catalysis of ester hydrolysis, the rates and mechanisms of oxide dissolution, heterogeneous charge transfer reactions and the photocatalytic reactions of oxidation of organic compounds can all, in certain cases, be described as reactions of specific surface complexes; some relevant examples are discussed.
publishDate 2000
dc.date.none.fl_str_mv 2000-01
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/11336/71663
Blesa, Miguel Angel; Weisz, Ariel D.; Morando, Pedro Juan; Salfity, José Adrián; Magaz, María del Carmen; et al.; The interaction of metal oxide surfaces with complexing agents dissolved in water; Elsevier Science Sa; Coordination Chemistry Reviews; 196; 1; 1-2000; 31-63
0010-8545
CONICET Digital
CONICET
url http://hdl.handle.net/11336/71663
identifier_str_mv Blesa, Miguel Angel; Weisz, Ariel D.; Morando, Pedro Juan; Salfity, José Adrián; Magaz, María del Carmen; et al.; The interaction of metal oxide surfaces with complexing agents dissolved in water; Elsevier Science Sa; Coordination Chemistry Reviews; 196; 1; 1-2000; 31-63
0010-8545
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/S0010-8545(99)00005-3
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0010854599000053
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
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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