Correlation between pore size and reactivity of macro/mesoporous iron and copper hexacyanoferrates for H2O2 electrocatalysis

Autores
Gonçales, V.R.; Gaitán, M.H.; Bragatto, A.D.O.P.; Soler-Illia, G.J.A.A.; Baraldo, L.M.; Córdoba De Torresi, S.I.
Año de publicación
2013
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The effect of pore size to H2O2 detection by macroporous and mesoporous Prussian blue type electrocatalysts is reported in the present paper. The macroporous electrocatalysts were prepared employing spherical colloidal particles of different sizes (300, 460, 600 and 800 nm) as sacrificial templates to synthesize a copper hexacyanoferrate/polypyrrole (CuHCNFe/Ppy) hybrid material. Surprisingly, macroporous and non-porous CuHCNFe/Ppy displayed very similar results, which led to a discussion that application of macroporous platforms in sensors must consider the material wettability and the influence of electrochemical kinetics on analyte detection. In order to evaluate the effect of smaller pores, the performance of the macroporous H2O2 sensors was also compared to electrocatalysts synthesised through the immobilization of Prussian blue and CuHCNFe layers inside the cavities of mesoporous TiO2 films with diameters of 13, 20 and 40 nm. In this scale, the results were superior than those achieved with the non-porous sensors, demonstrating the possibility of controlling the performance of H2O2 sensors according to the pore diameter and the amount of immobilized material. Among the tested porous materials, the H2O2 sensor with better performance was achieved using the 20-nm diameter TiO2 platform functionalized with Prussian blue, which presented a sensitivity of (930 ± 50) μA cm-2 mmol-1 L, detection limit of (0.49 ± 0.08) μmol L-1, response time of (6 ± 2) seconds and linear range up to (1.3 ± 0.1) mmol L-1. This performance was extremely satisfactory considering sensors operating by chronoamperometry. © 2013 Elsevier Ltd. All rights reserved.
Fil:Soler-Illia, G.J.A.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.
Fil:Baraldo, L.M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.
Fuente
J Electroanal Chem 2013;706:48-54
Materia
Copper hexacyanoferrate
Hydrogen peroxide
Polypyrrole
Porous
Prussian blue
Template
Chronoamperometry
Complexation
Copper
Electrocatalysis
Electrocatalysts
Electrolysis
Hybrid materials
Hydrogen peroxide
Intermetallics
Polypyrroles
Pore size
Porous materials
Titanium dioxide
Better performance
Copper hexacyanoferrate
Electrochemical kinetics
Porous
Prussian blue
Sacrificial templates
Spherical colloidal particles
Template
Sensors
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by/2.5/ar
Repositorio
Biblioteca Digital (UBA-FCEN)
Institución
Universidad Nacional de Buenos Aires. Facultad de Ciencias Exactas y Naturales
OAI Identificador
paperaa:paper_15726657_v706_n_p48_Goncales

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oai_identifier_str paperaa:paper_15726657_v706_n_p48_Goncales
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repository_id_str 1896
network_name_str Biblioteca Digital (UBA-FCEN)
spelling Correlation between pore size and reactivity of macro/mesoporous iron and copper hexacyanoferrates for H2O2 electrocatalysisGonçales, V.R.Gaitán, M.H.Bragatto, A.D.O.P.Soler-Illia, G.J.A.A.Baraldo, L.M.Córdoba De Torresi, S.I.Copper hexacyanoferrateHydrogen peroxidePolypyrrolePorousPrussian blueTemplateChronoamperometryComplexationCopperElectrocatalysisElectrocatalystsElectrolysisHybrid materialsHydrogen peroxideIntermetallicsPolypyrrolesPore sizePorous materialsTitanium dioxideBetter performanceCopper hexacyanoferrateElectrochemical kineticsPorousPrussian blueSacrificial templatesSpherical colloidal particlesTemplateSensorsThe effect of pore size to H2O2 detection by macroporous and mesoporous Prussian blue type electrocatalysts is reported in the present paper. The macroporous electrocatalysts were prepared employing spherical colloidal particles of different sizes (300, 460, 600 and 800 nm) as sacrificial templates to synthesize a copper hexacyanoferrate/polypyrrole (CuHCNFe/Ppy) hybrid material. Surprisingly, macroporous and non-porous CuHCNFe/Ppy displayed very similar results, which led to a discussion that application of macroporous platforms in sensors must consider the material wettability and the influence of electrochemical kinetics on analyte detection. In order to evaluate the effect of smaller pores, the performance of the macroporous H2O2 sensors was also compared to electrocatalysts synthesised through the immobilization of Prussian blue and CuHCNFe layers inside the cavities of mesoporous TiO2 films with diameters of 13, 20 and 40 nm. In this scale, the results were superior than those achieved with the non-porous sensors, demonstrating the possibility of controlling the performance of H2O2 sensors according to the pore diameter and the amount of immobilized material. Among the tested porous materials, the H2O2 sensor with better performance was achieved using the 20-nm diameter TiO2 platform functionalized with Prussian blue, which presented a sensitivity of (930 ± 50) μA cm-2 mmol-1 L, detection limit of (0.49 ± 0.08) μmol L-1, response time of (6 ± 2) seconds and linear range up to (1.3 ± 0.1) mmol L-1. This performance was extremely satisfactory considering sensors operating by chronoamperometry. © 2013 Elsevier Ltd. All rights reserved.Fil:Soler-Illia, G.J.A.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.Fil:Baraldo, L.M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.2013info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://hdl.handle.net/20.500.12110/paper_15726657_v706_n_p48_GoncalesJ Electroanal Chem 2013;706:48-54reponame:Biblioteca Digital (UBA-FCEN)instname:Universidad Nacional de Buenos Aires. Facultad de Ciencias Exactas y Naturalesinstacron:UBA-FCENenginfo:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/2.5/ar2025-09-29T13:43:00Zpaperaa:paper_15726657_v706_n_p48_GoncalesInstitucionalhttps://digital.bl.fcen.uba.ar/Universidad públicaNo correspondehttps://digital.bl.fcen.uba.ar/cgi-bin/oaiserver.cgiana@bl.fcen.uba.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:18962025-09-29 13:43:01.427Biblioteca Digital (UBA-FCEN) - Universidad Nacional de Buenos Aires. Facultad de Ciencias Exactas y Naturalesfalse
dc.title.none.fl_str_mv Correlation between pore size and reactivity of macro/mesoporous iron and copper hexacyanoferrates for H2O2 electrocatalysis
title Correlation between pore size and reactivity of macro/mesoporous iron and copper hexacyanoferrates for H2O2 electrocatalysis
spellingShingle Correlation between pore size and reactivity of macro/mesoporous iron and copper hexacyanoferrates for H2O2 electrocatalysis
Gonçales, V.R.
Copper hexacyanoferrate
Hydrogen peroxide
Polypyrrole
Porous
Prussian blue
Template
Chronoamperometry
Complexation
Copper
Electrocatalysis
Electrocatalysts
Electrolysis
Hybrid materials
Hydrogen peroxide
Intermetallics
Polypyrroles
Pore size
Porous materials
Titanium dioxide
Better performance
Copper hexacyanoferrate
Electrochemical kinetics
Porous
Prussian blue
Sacrificial templates
Spherical colloidal particles
Template
Sensors
title_short Correlation between pore size and reactivity of macro/mesoporous iron and copper hexacyanoferrates for H2O2 electrocatalysis
title_full Correlation between pore size and reactivity of macro/mesoporous iron and copper hexacyanoferrates for H2O2 electrocatalysis
title_fullStr Correlation between pore size and reactivity of macro/mesoporous iron and copper hexacyanoferrates for H2O2 electrocatalysis
title_full_unstemmed Correlation between pore size and reactivity of macro/mesoporous iron and copper hexacyanoferrates for H2O2 electrocatalysis
title_sort Correlation between pore size and reactivity of macro/mesoporous iron and copper hexacyanoferrates for H2O2 electrocatalysis
dc.creator.none.fl_str_mv Gonçales, V.R.
Gaitán, M.H.
Bragatto, A.D.O.P.
Soler-Illia, G.J.A.A.
Baraldo, L.M.
Córdoba De Torresi, S.I.
author Gonçales, V.R.
author_facet Gonçales, V.R.
Gaitán, M.H.
Bragatto, A.D.O.P.
Soler-Illia, G.J.A.A.
Baraldo, L.M.
Córdoba De Torresi, S.I.
author_role author
author2 Gaitán, M.H.
Bragatto, A.D.O.P.
Soler-Illia, G.J.A.A.
Baraldo, L.M.
Córdoba De Torresi, S.I.
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Copper hexacyanoferrate
Hydrogen peroxide
Polypyrrole
Porous
Prussian blue
Template
Chronoamperometry
Complexation
Copper
Electrocatalysis
Electrocatalysts
Electrolysis
Hybrid materials
Hydrogen peroxide
Intermetallics
Polypyrroles
Pore size
Porous materials
Titanium dioxide
Better performance
Copper hexacyanoferrate
Electrochemical kinetics
Porous
Prussian blue
Sacrificial templates
Spherical colloidal particles
Template
Sensors
topic Copper hexacyanoferrate
Hydrogen peroxide
Polypyrrole
Porous
Prussian blue
Template
Chronoamperometry
Complexation
Copper
Electrocatalysis
Electrocatalysts
Electrolysis
Hybrid materials
Hydrogen peroxide
Intermetallics
Polypyrroles
Pore size
Porous materials
Titanium dioxide
Better performance
Copper hexacyanoferrate
Electrochemical kinetics
Porous
Prussian blue
Sacrificial templates
Spherical colloidal particles
Template
Sensors
dc.description.none.fl_txt_mv The effect of pore size to H2O2 detection by macroporous and mesoporous Prussian blue type electrocatalysts is reported in the present paper. The macroporous electrocatalysts were prepared employing spherical colloidal particles of different sizes (300, 460, 600 and 800 nm) as sacrificial templates to synthesize a copper hexacyanoferrate/polypyrrole (CuHCNFe/Ppy) hybrid material. Surprisingly, macroporous and non-porous CuHCNFe/Ppy displayed very similar results, which led to a discussion that application of macroporous platforms in sensors must consider the material wettability and the influence of electrochemical kinetics on analyte detection. In order to evaluate the effect of smaller pores, the performance of the macroporous H2O2 sensors was also compared to electrocatalysts synthesised through the immobilization of Prussian blue and CuHCNFe layers inside the cavities of mesoporous TiO2 films with diameters of 13, 20 and 40 nm. In this scale, the results were superior than those achieved with the non-porous sensors, demonstrating the possibility of controlling the performance of H2O2 sensors according to the pore diameter and the amount of immobilized material. Among the tested porous materials, the H2O2 sensor with better performance was achieved using the 20-nm diameter TiO2 platform functionalized with Prussian blue, which presented a sensitivity of (930 ± 50) μA cm-2 mmol-1 L, detection limit of (0.49 ± 0.08) μmol L-1, response time of (6 ± 2) seconds and linear range up to (1.3 ± 0.1) mmol L-1. This performance was extremely satisfactory considering sensors operating by chronoamperometry. © 2013 Elsevier Ltd. All rights reserved.
Fil:Soler-Illia, G.J.A.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.
Fil:Baraldo, L.M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.
description The effect of pore size to H2O2 detection by macroporous and mesoporous Prussian blue type electrocatalysts is reported in the present paper. The macroporous electrocatalysts were prepared employing spherical colloidal particles of different sizes (300, 460, 600 and 800 nm) as sacrificial templates to synthesize a copper hexacyanoferrate/polypyrrole (CuHCNFe/Ppy) hybrid material. Surprisingly, macroporous and non-porous CuHCNFe/Ppy displayed very similar results, which led to a discussion that application of macroporous platforms in sensors must consider the material wettability and the influence of electrochemical kinetics on analyte detection. In order to evaluate the effect of smaller pores, the performance of the macroporous H2O2 sensors was also compared to electrocatalysts synthesised through the immobilization of Prussian blue and CuHCNFe layers inside the cavities of mesoporous TiO2 films with diameters of 13, 20 and 40 nm. In this scale, the results were superior than those achieved with the non-porous sensors, demonstrating the possibility of controlling the performance of H2O2 sensors according to the pore diameter and the amount of immobilized material. Among the tested porous materials, the H2O2 sensor with better performance was achieved using the 20-nm diameter TiO2 platform functionalized with Prussian blue, which presented a sensitivity of (930 ± 50) μA cm-2 mmol-1 L, detection limit of (0.49 ± 0.08) μmol L-1, response time of (6 ± 2) seconds and linear range up to (1.3 ± 0.1) mmol L-1. This performance was extremely satisfactory considering sensors operating by chronoamperometry. © 2013 Elsevier Ltd. All rights reserved.
publishDate 2013
dc.date.none.fl_str_mv 2013
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/20.500.12110/paper_15726657_v706_n_p48_Goncales
url http://hdl.handle.net/20.500.12110/paper_15726657_v706_n_p48_Goncales
dc.language.none.fl_str_mv eng
language eng
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by/2.5/ar
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by/2.5/ar
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv J Electroanal Chem 2013;706:48-54
reponame:Biblioteca Digital (UBA-FCEN)
instname:Universidad Nacional de Buenos Aires. Facultad de Ciencias Exactas y Naturales
instacron:UBA-FCEN
reponame_str Biblioteca Digital (UBA-FCEN)
collection Biblioteca Digital (UBA-FCEN)
instname_str Universidad Nacional de Buenos Aires. Facultad de Ciencias Exactas y Naturales
instacron_str UBA-FCEN
institution UBA-FCEN
repository.name.fl_str_mv Biblioteca Digital (UBA-FCEN) - Universidad Nacional de Buenos Aires. Facultad de Ciencias Exactas y Naturales
repository.mail.fl_str_mv ana@bl.fcen.uba.ar
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