Photocatalytic behavior of silver vanadates: Microemulsion synthesis and post-reaction characterization

Silver vanadates with light absorption properties in the visible region were successfully prepared by a low temperature pathway (not exceeding 110°C) using an optimized microemulsion methodology. The resulting materials were evaluated as photocatalysts in Rhodamine B photodegradation and characteriz...

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Detalles Bibliográficos
Autores: Belver Coldeira, Carolina, Adán, Cristina, García Rodríguez, Sergio, Fernández García, Marcos
Tipo de recurso: artículo
Fecha de publicación:2013
País:España
Institución:Universidad Autónoma de Madrid
Repositorio:Biblos-e Archivo. Repositorio Institucional de la UAM
Idioma:inglés
OAI Identifier:oai:repositorio.uam.es:10486/671577
Acceso en línea:http://hdl.handle.net/10486/671577
https://dx.doi.org/10.1016/j.cej.2012.11.102
Access Level:acceso abierto
Palabra clave:Dye photodegradation
Silver vanadates
Used-catalysts characterization
Visible-light-driven photocatalysts
Química
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spelling Photocatalytic behavior of silver vanadates: Microemulsion synthesis and post-reaction characterizationBelver Coldeira, CarolinaAdán, CristinaGarcía Rodríguez, SergioFernández García, MarcosDye photodegradationSilver vanadatesUsed-catalysts characterizationVisible-light-driven photocatalystsQuímicaSilver vanadates with light absorption properties in the visible region were successfully prepared by a low temperature pathway (not exceeding 110°C) using an optimized microemulsion methodology. The resulting materials were evaluated as photocatalysts in Rhodamine B photodegradation and characterized before and after reaction. The silver vanadates displayed silver metallic nanoparticles decorating the surface. The as-prepared Ag3VO4 catalyst was the most active. Nevertheless, this silver vanadate suffered important changes during reaction. The initial structure evolves yielding a silver pyrovanadate, Ag4-V2O7, with a concomitant increase of the number and size of the silver metallic nanoparticles. The synergy between these Ag0 particles and the photoactivity of the Ag4V2O7 phase seems responsible of the high photoactivity of this materialThe authors thank the funding from MICINN Project CTQ2010-14872/BQUElsevier B.V.Departamento de Química Física AplicadaFacultad de Ciencias20132013-05-15research articlehttp://purl.org/coar/resource_type/c_2df8fbb1VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10486/671577https://dx.doi.org/10.1016/j.cej.2012.11.102reponame:Biblos-e Archivo. Repositorio Institucional de la UAMinstname:Universidad Autónoma de MadridInglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:repositorio.uam.es:10486/6715772026-06-23T12:46:27Z
dc.title.none.fl_str_mv Photocatalytic behavior of silver vanadates: Microemulsion synthesis and post-reaction characterization
title Photocatalytic behavior of silver vanadates: Microemulsion synthesis and post-reaction characterization
spellingShingle Photocatalytic behavior of silver vanadates: Microemulsion synthesis and post-reaction characterization
Belver Coldeira, Carolina
Dye photodegradation
Silver vanadates
Used-catalysts characterization
Visible-light-driven photocatalysts
Química
title_short Photocatalytic behavior of silver vanadates: Microemulsion synthesis and post-reaction characterization
title_full Photocatalytic behavior of silver vanadates: Microemulsion synthesis and post-reaction characterization
title_fullStr Photocatalytic behavior of silver vanadates: Microemulsion synthesis and post-reaction characterization
title_full_unstemmed Photocatalytic behavior of silver vanadates: Microemulsion synthesis and post-reaction characterization
title_sort Photocatalytic behavior of silver vanadates: Microemulsion synthesis and post-reaction characterization
dc.creator.none.fl_str_mv Belver Coldeira, Carolina
Adán, Cristina
García Rodríguez, Sergio
Fernández García, Marcos
author Belver Coldeira, Carolina
author_facet Belver Coldeira, Carolina
Adán, Cristina
García Rodríguez, Sergio
Fernández García, Marcos
author_role author
author2 Adán, Cristina
García Rodríguez, Sergio
Fernández García, Marcos
author2_role author
author
author
dc.contributor.none.fl_str_mv Departamento de Química Física Aplicada
Facultad de Ciencias
dc.subject.none.fl_str_mv Dye photodegradation
Silver vanadates
Used-catalysts characterization
Visible-light-driven photocatalysts
Química
topic Dye photodegradation
Silver vanadates
Used-catalysts characterization
Visible-light-driven photocatalysts
Química
description Silver vanadates with light absorption properties in the visible region were successfully prepared by a low temperature pathway (not exceeding 110°C) using an optimized microemulsion methodology. The resulting materials were evaluated as photocatalysts in Rhodamine B photodegradation and characterized before and after reaction. The silver vanadates displayed silver metallic nanoparticles decorating the surface. The as-prepared Ag3VO4 catalyst was the most active. Nevertheless, this silver vanadate suffered important changes during reaction. The initial structure evolves yielding a silver pyrovanadate, Ag4-V2O7, with a concomitant increase of the number and size of the silver metallic nanoparticles. The synergy between these Ag0 particles and the photoactivity of the Ag4V2O7 phase seems responsible of the high photoactivity of this material
publishDate 2013
dc.date.none.fl_str_mv 2013
2013-05-15
dc.type.none.fl_str_mv research article
http://purl.org/coar/resource_type/c_2df8fbb1
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10486/671577
https://dx.doi.org/10.1016/j.cej.2012.11.102
url http://hdl.handle.net/10486/671577
https://dx.doi.org/10.1016/j.cej.2012.11.102
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier B.V.
publisher.none.fl_str_mv Elsevier B.V.
dc.source.none.fl_str_mv reponame:Biblos-e Archivo. Repositorio Institucional de la UAM
instname:Universidad Autónoma de Madrid
instname_str Universidad Autónoma de Madrid
reponame_str Biblos-e Archivo. Repositorio Institucional de la UAM
collection Biblos-e Archivo. Repositorio Institucional de la UAM
repository.name.fl_str_mv
repository.mail.fl_str_mv
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