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Platinum Electrodeposition at Unsupported Electrochemically Reduced Nanographene Oxide for Enhanced Ammonia Oxidation
[Image: see text] The electrochemical reduction of highly oxidized unsupported graphene oxide nanosheets and its platinum electrodeposition was done by the rotating disk slurry electrode technique. Avoiding the use of a solid electrode, graphene oxide was electrochemically reduced in a slurry soluti...
Autores principales: | , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American
Chemical Society
2014
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3985924/ https://www.ncbi.nlm.nih.gov/pubmed/24417177 http://dx.doi.org/10.1021/am4052552 |
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author | Cunci, Lisandro Velez, Carlos A. Perez, Ivan Suleiman, Amal Larios, Eduardo José-Yacamán, Miguel Watkins, James J. Cabrera, Carlos R. |
author_facet | Cunci, Lisandro Velez, Carlos A. Perez, Ivan Suleiman, Amal Larios, Eduardo José-Yacamán, Miguel Watkins, James J. Cabrera, Carlos R. |
author_sort | Cunci, Lisandro |
collection | PubMed |
description | [Image: see text] The electrochemical reduction of highly oxidized unsupported graphene oxide nanosheets and its platinum electrodeposition was done by the rotating disk slurry electrode technique. Avoiding the use of a solid electrode, graphene oxide was electrochemically reduced in a slurry solution with a scalable process without the use of a reducing agent. Graphene oxide nanosheets were synthesized from carbon platelet nanofibers to obtain highly hydrophilic layers of less than 250 nm in width. The graphene oxide and electrochemically reduced graphene oxide/Pt (erGOx/Pt) hybrid materials were characterized through different spectroscopy and microscopy techniques. Pt nanoparticles with 100 facets, clusters, and atoms at erGOx were identified by high resolution transmission electron microscopy (HRTEM). Cyclic voltammetry was used to characterize the electrocatalytic activity of the highly dispersed erGOx/Pt hybrid material toward the oxidation of ammonia, which showed a 5-fold current density increase when compared with commercially available Vulcan/Pt 20%. This is in agreement with having Pt (100) facets present in the HRTEM images of the erGOx/Pt material. |
format | Online Article Text |
id | pubmed-3985924 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2014 |
publisher | American
Chemical Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-39859242015-01-13 Platinum Electrodeposition at Unsupported Electrochemically Reduced Nanographene Oxide for Enhanced Ammonia Oxidation Cunci, Lisandro Velez, Carlos A. Perez, Ivan Suleiman, Amal Larios, Eduardo José-Yacamán, Miguel Watkins, James J. Cabrera, Carlos R. ACS Appl Mater Interfaces [Image: see text] The electrochemical reduction of highly oxidized unsupported graphene oxide nanosheets and its platinum electrodeposition was done by the rotating disk slurry electrode technique. Avoiding the use of a solid electrode, graphene oxide was electrochemically reduced in a slurry solution with a scalable process without the use of a reducing agent. Graphene oxide nanosheets were synthesized from carbon platelet nanofibers to obtain highly hydrophilic layers of less than 250 nm in width. The graphene oxide and electrochemically reduced graphene oxide/Pt (erGOx/Pt) hybrid materials were characterized through different spectroscopy and microscopy techniques. Pt nanoparticles with 100 facets, clusters, and atoms at erGOx were identified by high resolution transmission electron microscopy (HRTEM). Cyclic voltammetry was used to characterize the electrocatalytic activity of the highly dispersed erGOx/Pt hybrid material toward the oxidation of ammonia, which showed a 5-fold current density increase when compared with commercially available Vulcan/Pt 20%. This is in agreement with having Pt (100) facets present in the HRTEM images of the erGOx/Pt material. American Chemical Society 2014-01-13 2014-02-12 /pmc/articles/PMC3985924/ /pubmed/24417177 http://dx.doi.org/10.1021/am4052552 Text en Copyright © 2014 American Chemical Society |
spellingShingle | Cunci, Lisandro Velez, Carlos A. Perez, Ivan Suleiman, Amal Larios, Eduardo José-Yacamán, Miguel Watkins, James J. Cabrera, Carlos R. Platinum Electrodeposition at Unsupported Electrochemically Reduced Nanographene Oxide for Enhanced Ammonia Oxidation |
title | Platinum
Electrodeposition at Unsupported Electrochemically Reduced Nanographene
Oxide for Enhanced Ammonia Oxidation |
title_full | Platinum
Electrodeposition at Unsupported Electrochemically Reduced Nanographene
Oxide for Enhanced Ammonia Oxidation |
title_fullStr | Platinum
Electrodeposition at Unsupported Electrochemically Reduced Nanographene
Oxide for Enhanced Ammonia Oxidation |
title_full_unstemmed | Platinum
Electrodeposition at Unsupported Electrochemically Reduced Nanographene
Oxide for Enhanced Ammonia Oxidation |
title_short | Platinum
Electrodeposition at Unsupported Electrochemically Reduced Nanographene
Oxide for Enhanced Ammonia Oxidation |
title_sort | platinum
electrodeposition at unsupported electrochemically reduced nanographene
oxide for enhanced ammonia oxidation |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3985924/ https://www.ncbi.nlm.nih.gov/pubmed/24417177 http://dx.doi.org/10.1021/am4052552 |
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