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

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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...

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Autores principales: 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.
Formato: Artículo publishedVersion
Lenguaje:Inglés
Publicado: 2013
Materias:
Copper hexacyanoferrate
Hydrogen peroxide
Polypyrrole
Porous
Prussian blue
Template
Chronoamperometry
Complexation
Copper
Electrocatalysis
Electrocatalysts
Electrolysis
Hybrid materials
Intermetallics
Polypyrroles
Pore size
Porous materials
Titanium dioxide
Better performance
Electrochemical kinetics
Sacrificial templates
Spherical colloidal particles
Sensors
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_15726657_v706_n_p48_Goncales
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling paperaa:paper_15726657_v706_n_p48_Goncales2023-06-12T16:50:49Z Correlation between pore size and reactivity of macro/mesoporous iron and copper hexacyanoferrates for H2O2 electrocatalysis J Electroanal Chem 2013;706:48-54 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. 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 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. 2013 info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion application/pdf eng info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_15726657_v706_n_p48_Goncales
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
language Inglés
orig_language_str_mv eng
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
spellingShingle 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
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.
Correlation between pore size and reactivity of macro/mesoporous iron and copper hexacyanoferrates for H2O2 electrocatalysis
topic_facet 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
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.
format Artículo
Artículo
publishedVersion
author 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_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_sort Gonçales, V.R.
title Correlation between pore size and reactivity of macro/mesoporous iron and copper hexacyanoferrates for H2O2 electrocatalysis
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
publishDate 2013
url http://hdl.handle.net/20.500.12110/paper_15726657_v706_n_p48_Goncales
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