Electrochemical characterization of PtRu nanoparticles supported on mesoporous carbon for methanol electrooxidation
Nanoparticles of PtRu supported on mesoporous carbon were obtained by the impregnation and reduction method with NaBH 4. The high-surface-area mesoporous carbon was obtained by carbonization of a resorcinol-formaldehyde polymer with a cationic polyelectrolyte as a soft template. Surface characteriza...
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todo:paper_19327447_v116_n6_p4097_Viva2023-10-03T16:35:54Z Electrochemical characterization of PtRu nanoparticles supported on mesoporous carbon for methanol electrooxidation Viva, F.A. Bruno, M.M. Jobbágy, M. Corti, H.R. Cationic polyelectrolyte CO stripping Differential electrochemical mass spectroscopies Electrochemical active surface areas Electrochemical characterizations High dispersion Homogeneous distribution Mesoporous carbon Metal particle Methanol electrooxidation Methanol oxidation currents Powder X ray diffraction Pt-Ru catalysts Pt-Ru nanoparticles Reduction method Resorcinol formaldehydes Soft template Surface characterization Turnover frequency Carbon dioxide Carbonization Catalysts Chronoamperometry Conversion efficiency Cyclic voltammetry Electrooxidation Mass spectrometry Mesoporous materials Methanol Phenols Platinum alloys Transmission electron microscopy X ray diffraction Carbon Nanoparticles of PtRu supported on mesoporous carbon were obtained by the impregnation and reduction method with NaBH 4. The high-surface-area mesoporous carbon was obtained by carbonization of a resorcinol-formaldehyde polymer with a cationic polyelectrolyte as a soft template. Surface characterization performed by transmission electron microscopy and powder X-ray diffraction showed a homogeneous distribution and high dispersion of metal particles. The PtRu catalyst shows an electrochemical active surface area, determined by CO stripping, 45% higher than PtRu catalyst synthesized by the same method on Vulcan. This translated in a 25% increase in the methanol oxidation current as well as a lower poisoning rate and higher turnover frequency, as was assessed by cyclic voltammetry and chronoamperometry. Differential electrochemical mass spectroscopy indicated an 8% higher conversion efficiency of methanol to CO 2, demonstrating the benefits of using a mesoporous carbon as catalyst support. © 2011 American Chemical Society. Fil:Jobbágy, M. 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. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_19327447_v116_n6_p4097_Viva |
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Universidad de Buenos Aires |
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I-28 |
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R-134 |
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Cationic polyelectrolyte CO stripping Differential electrochemical mass spectroscopies Electrochemical active surface areas Electrochemical characterizations High dispersion Homogeneous distribution Mesoporous carbon Metal particle Methanol electrooxidation Methanol oxidation currents Powder X ray diffraction Pt-Ru catalysts Pt-Ru nanoparticles Reduction method Resorcinol formaldehydes Soft template Surface characterization Turnover frequency Carbon dioxide Carbonization Catalysts Chronoamperometry Conversion efficiency Cyclic voltammetry Electrooxidation Mass spectrometry Mesoporous materials Methanol Phenols Platinum alloys Transmission electron microscopy X ray diffraction Carbon |
| spellingShingle |
Cationic polyelectrolyte CO stripping Differential electrochemical mass spectroscopies Electrochemical active surface areas Electrochemical characterizations High dispersion Homogeneous distribution Mesoporous carbon Metal particle Methanol electrooxidation Methanol oxidation currents Powder X ray diffraction Pt-Ru catalysts Pt-Ru nanoparticles Reduction method Resorcinol formaldehydes Soft template Surface characterization Turnover frequency Carbon dioxide Carbonization Catalysts Chronoamperometry Conversion efficiency Cyclic voltammetry Electrooxidation Mass spectrometry Mesoporous materials Methanol Phenols Platinum alloys Transmission electron microscopy X ray diffraction Carbon Viva, F.A. Bruno, M.M. Jobbágy, M. Corti, H.R. Electrochemical characterization of PtRu nanoparticles supported on mesoporous carbon for methanol electrooxidation |
| topic_facet |
Cationic polyelectrolyte CO stripping Differential electrochemical mass spectroscopies Electrochemical active surface areas Electrochemical characterizations High dispersion Homogeneous distribution Mesoporous carbon Metal particle Methanol electrooxidation Methanol oxidation currents Powder X ray diffraction Pt-Ru catalysts Pt-Ru nanoparticles Reduction method Resorcinol formaldehydes Soft template Surface characterization Turnover frequency Carbon dioxide Carbonization Catalysts Chronoamperometry Conversion efficiency Cyclic voltammetry Electrooxidation Mass spectrometry Mesoporous materials Methanol Phenols Platinum alloys Transmission electron microscopy X ray diffraction Carbon |
| description |
Nanoparticles of PtRu supported on mesoporous carbon were obtained by the impregnation and reduction method with NaBH 4. The high-surface-area mesoporous carbon was obtained by carbonization of a resorcinol-formaldehyde polymer with a cationic polyelectrolyte as a soft template. Surface characterization performed by transmission electron microscopy and powder X-ray diffraction showed a homogeneous distribution and high dispersion of metal particles. The PtRu catalyst shows an electrochemical active surface area, determined by CO stripping, 45% higher than PtRu catalyst synthesized by the same method on Vulcan. This translated in a 25% increase in the methanol oxidation current as well as a lower poisoning rate and higher turnover frequency, as was assessed by cyclic voltammetry and chronoamperometry. Differential electrochemical mass spectroscopy indicated an 8% higher conversion efficiency of methanol to CO 2, demonstrating the benefits of using a mesoporous carbon as catalyst support. © 2011 American Chemical Society. |
| format |
JOUR |
| author |
Viva, F.A. Bruno, M.M. Jobbágy, M. Corti, H.R. |
| author_facet |
Viva, F.A. Bruno, M.M. Jobbágy, M. Corti, H.R. |
| author_sort |
Viva, F.A. |
| title |
Electrochemical characterization of PtRu nanoparticles supported on mesoporous carbon for methanol electrooxidation |
| title_short |
Electrochemical characterization of PtRu nanoparticles supported on mesoporous carbon for methanol electrooxidation |
| title_full |
Electrochemical characterization of PtRu nanoparticles supported on mesoporous carbon for methanol electrooxidation |
| title_fullStr |
Electrochemical characterization of PtRu nanoparticles supported on mesoporous carbon for methanol electrooxidation |
| title_full_unstemmed |
Electrochemical characterization of PtRu nanoparticles supported on mesoporous carbon for methanol electrooxidation |
| title_sort |
electrochemical characterization of ptru nanoparticles supported on mesoporous carbon for methanol electrooxidation |
| url |
http://hdl.handle.net/20.500.12110/paper_19327447_v116_n6_p4097_Viva |
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1807319051348738048 |