Mesoporous Pt and Pt/Ru alloy electrocatalysts for methanol oxidation

Mesoporous Pt and Pt/Ru catalysts with 2D-hexagonal mesostructure were synthesized using a triblock poly(ethylene oxide)-b-poly(propylene oxide)-b-poly(ethylene oxide) copolymer (Pluronic F127®) template, on a gold support. Large electrochemical surface areas were observed for the catalysts prepared...

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Autores principales:	Franceschini, Esteban Andrés, Williams, Federico Jose, Soler Illia, Galo Juan de Avila Arturo, Corti, Horacio Roberto
Publicado:	2011
Materias:	Catalyst Fuel cells Mesoporous Methanol PtRu alloys 2D-hexagonal Active site Electrochemical surface area Gold support Lyotropic liquid crystal Mass activity Methanol Oxidation Onset potential Over potential Pluronic F-127 Pt catalysts PtRu alloy Triblocks Alloys Electrocatalysts Ethylene Liquid crystals Mesoporous materials Oxidation Platinum Polyethylene oxides Propylene Ruthenium alloys Platinum alloys
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03787753_v196_n4_p1723_Franceschini http://hdl.handle.net/20.500.12110/paper_03787753_v196_n4_p1723_Franceschini
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_03787753_v196_n4_p1723_Franceschini
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spelling	paper:paper_03787753_v196_n4_p1723_Franceschini2023-06-08T15:40:29Z Mesoporous Pt and Pt/Ru alloy electrocatalysts for methanol oxidation Franceschini, Esteban Andrés Williams, Federico Jose Soler Illia, Galo Juan de Avila Arturo Corti, Horacio Roberto Catalyst Fuel cells Mesoporous Methanol PtRu alloys 2D-hexagonal Active site Electrochemical surface area Gold support Lyotropic liquid crystal Mass activity Mesoporous Methanol Oxidation Onset potential Over potential Pluronic F-127 Pt catalysts PtRu alloy Triblocks Alloys Electrocatalysts Ethylene Fuel cells Liquid crystals Mesoporous materials Methanol Oxidation Platinum Polyethylene oxides Propylene Ruthenium alloys Platinum alloys Mesoporous Pt and Pt/Ru catalysts with 2D-hexagonal mesostructure were synthesized using a triblock poly(ethylene oxide)-b-poly(propylene oxide)-b-poly(ethylene oxide) copolymer (Pluronic F127®) template, on a gold support. Large electrochemical surface areas were observed for the catalysts prepared at high overpotentials. Compared to the Pt catalyst, the Pt/Ru alloy containing 3 at% of Ru exhibited lower onset potential and more than three times the limit mass activity for methanol oxidation. This behavior is assigned to the larger pore size of the mesoporous Pt and Pt/Ru catalysts obtained with this template that seems to improve the methanol accessibility to the active sites compared to those obtained using lyotropic liquid crystals. © 2010 Elsevier B.V. Fil:Franceschini, E.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Williams, F.J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Soler-Illia, G.J.A.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Corti, H.R. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2011 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03787753_v196_n4_p1723_Franceschini http://hdl.handle.net/20.500.12110/paper_03787753_v196_n4_p1723_Franceschini
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Catalyst Fuel cells Mesoporous Methanol PtRu alloys 2D-hexagonal Active site Electrochemical surface area Gold support Lyotropic liquid crystal Mass activity Mesoporous Methanol Oxidation Onset potential Over potential Pluronic F-127 Pt catalysts PtRu alloy Triblocks Alloys Electrocatalysts Ethylene Fuel cells Liquid crystals Mesoporous materials Methanol Oxidation Platinum Polyethylene oxides Propylene Ruthenium alloys Platinum alloys
spellingShingle	Catalyst Fuel cells Mesoporous Methanol PtRu alloys 2D-hexagonal Active site Electrochemical surface area Gold support Lyotropic liquid crystal Mass activity Mesoporous Methanol Oxidation Onset potential Over potential Pluronic F-127 Pt catalysts PtRu alloy Triblocks Alloys Electrocatalysts Ethylene Fuel cells Liquid crystals Mesoporous materials Methanol Oxidation Platinum Polyethylene oxides Propylene Ruthenium alloys Platinum alloys Franceschini, Esteban Andrés Williams, Federico Jose Soler Illia, Galo Juan de Avila Arturo Corti, Horacio Roberto Mesoporous Pt and Pt/Ru alloy electrocatalysts for methanol oxidation
topic_facet	Catalyst Fuel cells Mesoporous Methanol PtRu alloys 2D-hexagonal Active site Electrochemical surface area Gold support Lyotropic liquid crystal Mass activity Mesoporous Methanol Oxidation Onset potential Over potential Pluronic F-127 Pt catalysts PtRu alloy Triblocks Alloys Electrocatalysts Ethylene Fuel cells Liquid crystals Mesoporous materials Methanol Oxidation Platinum Polyethylene oxides Propylene Ruthenium alloys Platinum alloys
description	Mesoporous Pt and Pt/Ru catalysts with 2D-hexagonal mesostructure were synthesized using a triblock poly(ethylene oxide)-b-poly(propylene oxide)-b-poly(ethylene oxide) copolymer (Pluronic F127®) template, on a gold support. Large electrochemical surface areas were observed for the catalysts prepared at high overpotentials. Compared to the Pt catalyst, the Pt/Ru alloy containing 3 at% of Ru exhibited lower onset potential and more than three times the limit mass activity for methanol oxidation. This behavior is assigned to the larger pore size of the mesoporous Pt and Pt/Ru catalysts obtained with this template that seems to improve the methanol accessibility to the active sites compared to those obtained using lyotropic liquid crystals. © 2010 Elsevier B.V.
author	Franceschini, Esteban Andrés Williams, Federico Jose Soler Illia, Galo Juan de Avila Arturo Corti, Horacio Roberto
author_facet	Franceschini, Esteban Andrés Williams, Federico Jose Soler Illia, Galo Juan de Avila Arturo Corti, Horacio Roberto
author_sort	Franceschini, Esteban Andrés
title	Mesoporous Pt and Pt/Ru alloy electrocatalysts for methanol oxidation
title_short	Mesoporous Pt and Pt/Ru alloy electrocatalysts for methanol oxidation
title_full	Mesoporous Pt and Pt/Ru alloy electrocatalysts for methanol oxidation
title_fullStr	Mesoporous Pt and Pt/Ru alloy electrocatalysts for methanol oxidation
title_full_unstemmed	Mesoporous Pt and Pt/Ru alloy electrocatalysts for methanol oxidation
title_sort	mesoporous pt and pt/ru alloy electrocatalysts for methanol oxidation
publishDate	2011
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03787753_v196_n4_p1723_Franceschini http://hdl.handle.net/20.500.12110/paper_03787753_v196_n4_p1723_Franceschini
work_keys_str_mv	AT franceschiniestebanandres mesoporousptandptrualloyelectrocatalystsformethanoloxidation AT williamsfedericojose mesoporousptandptrualloyelectrocatalystsformethanoloxidation AT solerilliagalojuandeavilaarturo mesoporousptandptrualloyelectrocatalystsformethanoloxidation AT cortihoracioroberto mesoporousptandptrualloyelectrocatalystsformethanoloxidation
_version_	1768544228924719104

Mesoporous Pt and Pt/Ru alloy electrocatalysts for methanol oxidation

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