Raman Spectroscopy and Electrochemical Investigations of Pt Electrocatalyst Supported on Carbon Prepared through Plasma Pyrolysis of Natural Gas
Physicochemical and electrochemical characterisations of Pt-based electrocatalysts supported on carbon (Vulcan carbon, C1, and carbon produced by plasma pyrolysis of natural gas, C2) toward ethanol electrooxidation were investigated. The Pt20/C180 and Pt20/C280 electrocatalysts were prepared by ther...
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| Format: | Article |
| Language: | English |
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Wiley
2015-01-01
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| Series: | Journal of Spectroscopy |
| Online Access: | http://dx.doi.org/10.1155/2015/329730 |
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| author | Tereza Cristina Santos Evangelista Giordano Toscano Paganoto Marco Cesar Cunegundes Guimarães Josimar Ribeiro |
| author_facet | Tereza Cristina Santos Evangelista Giordano Toscano Paganoto Marco Cesar Cunegundes Guimarães Josimar Ribeiro |
| author_sort | Tereza Cristina Santos Evangelista |
| collection | DOAJ |
| description | Physicochemical and electrochemical characterisations of Pt-based electrocatalysts supported on carbon (Vulcan carbon, C1, and carbon produced by plasma pyrolysis of natural gas, C2) toward ethanol electrooxidation were investigated. The Pt20/C180 and Pt20/C280 electrocatalysts were prepared by thermal decomposition of polymeric precursors at 350°C. The electrochemical and physicochemical characterisations of the electrocatalysts were performed by means of X-ray diffraction (XRD), transmission electron microscope (TEM), Raman scattering, cyclic voltammetry, and chronoamperometry tests. The XRD results show that the Pt-based electrocatalysts present platinum metallic which is face-centered cubic structure. The results indicate that the Pt20/C180 electrocatalyst has a smaller particle size (10.1–6.9 nm) compared with the Pt20/C280 electrocatalyst; however, the Pt20/C280 particle sizes are similar (12.8–10.4 nm) and almost independent of the reflection planes, which suggests that the Pt crystallites grow with a radial shape. Raman results reveal that both Vulcan carbon and plasma carbon are graphite-like materials consisting mostly of sp2 carbon. Cyclic voltammetry and chronoamperometry data obtained in this study indicate that the deposition of Pt on plasma carbon increases its electrocatalytic activity toward ethanol oxidation reaction. |
| format | Article |
| id | doaj-art-572cef5a8aaf47f4be3703a0106823a6 |
| institution | Kabale University |
| issn | 2314-4920 2314-4939 |
| language | English |
| publishDate | 2015-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Spectroscopy |
| spelling | doaj-art-572cef5a8aaf47f4be3703a0106823a62025-08-20T03:33:34ZengWileyJournal of Spectroscopy2314-49202314-49392015-01-01201510.1155/2015/329730329730Raman Spectroscopy and Electrochemical Investigations of Pt Electrocatalyst Supported on Carbon Prepared through Plasma Pyrolysis of Natural GasTereza Cristina Santos Evangelista0Giordano Toscano Paganoto1Marco Cesar Cunegundes Guimarães2Josimar Ribeiro3Departamento de Química, Centro de Ciências Exatas, UFES, Avenida Fernando Ferrari, 514 Goiabeiras, 29075-910 Vitória, ES, BrazilDepartamento de Química, Centro de Ciências Exatas, UFES, Avenida Fernando Ferrari, 514 Goiabeiras, 29075-910 Vitória, ES, BrazilDepartamento de Morfologia, Centro de Ciências da Saúde, UFES, Campus de Maruípe, 29049-999 Vitória, ES, BrazilDepartamento de Química, Centro de Ciências Exatas, UFES, Avenida Fernando Ferrari, 514 Goiabeiras, 29075-910 Vitória, ES, BrazilPhysicochemical and electrochemical characterisations of Pt-based electrocatalysts supported on carbon (Vulcan carbon, C1, and carbon produced by plasma pyrolysis of natural gas, C2) toward ethanol electrooxidation were investigated. The Pt20/C180 and Pt20/C280 electrocatalysts were prepared by thermal decomposition of polymeric precursors at 350°C. The electrochemical and physicochemical characterisations of the electrocatalysts were performed by means of X-ray diffraction (XRD), transmission electron microscope (TEM), Raman scattering, cyclic voltammetry, and chronoamperometry tests. The XRD results show that the Pt-based electrocatalysts present platinum metallic which is face-centered cubic structure. The results indicate that the Pt20/C180 electrocatalyst has a smaller particle size (10.1–6.9 nm) compared with the Pt20/C280 electrocatalyst; however, the Pt20/C280 particle sizes are similar (12.8–10.4 nm) and almost independent of the reflection planes, which suggests that the Pt crystallites grow with a radial shape. Raman results reveal that both Vulcan carbon and plasma carbon are graphite-like materials consisting mostly of sp2 carbon. Cyclic voltammetry and chronoamperometry data obtained in this study indicate that the deposition of Pt on plasma carbon increases its electrocatalytic activity toward ethanol oxidation reaction.http://dx.doi.org/10.1155/2015/329730 |
| spellingShingle | Tereza Cristina Santos Evangelista Giordano Toscano Paganoto Marco Cesar Cunegundes Guimarães Josimar Ribeiro Raman Spectroscopy and Electrochemical Investigations of Pt Electrocatalyst Supported on Carbon Prepared through Plasma Pyrolysis of Natural Gas Journal of Spectroscopy |
| title | Raman Spectroscopy and Electrochemical Investigations of Pt Electrocatalyst Supported on Carbon Prepared through Plasma Pyrolysis of Natural Gas |
| title_full | Raman Spectroscopy and Electrochemical Investigations of Pt Electrocatalyst Supported on Carbon Prepared through Plasma Pyrolysis of Natural Gas |
| title_fullStr | Raman Spectroscopy and Electrochemical Investigations of Pt Electrocatalyst Supported on Carbon Prepared through Plasma Pyrolysis of Natural Gas |
| title_full_unstemmed | Raman Spectroscopy and Electrochemical Investigations of Pt Electrocatalyst Supported on Carbon Prepared through Plasma Pyrolysis of Natural Gas |
| title_short | Raman Spectroscopy and Electrochemical Investigations of Pt Electrocatalyst Supported on Carbon Prepared through Plasma Pyrolysis of Natural Gas |
| title_sort | raman spectroscopy and electrochemical investigations of pt electrocatalyst supported on carbon prepared through plasma pyrolysis of natural gas |
| url | http://dx.doi.org/10.1155/2015/329730 |
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