Synthesis of Graphitic Carbon Nanostructures from Sawdust and Their Application as Electrocatalyst Supports
We present a novel and facile synthetic method for fabricating graphitic carbon nanostructures (GCNs) from sawdust. This method is based on the use of catalysts (Fe or Ni) that allows the direct conversion of sawdust into highly graphitized carbon material. The following procedure was used to obtain these graphitic nanoparticles: (a) impregnation of the sawdust particles with iron or nickel salts, (b) carbonization of the impregnated material at a temperature of 900 or 1000 °C, and (c) selective removal of the non-graphitized carbon (amorphous carbon) by an oxidant (KMnO4). The resulting carbon is made up of nanosized graphitic structures (i.e., nanocapsules, nanocoils, nanoribbons), which have a high crystallinity, as evidenced by TEM/SAED, XRD and Raman analysis. These GCNs were used as supports for platinum nanoparticles. Such prepared electrocatalysts show an electrocatalytical surface area close to 90 m2.g-1 Pt, and they present a similar or higher electrocatalytic activity toward methanol electrooxidation than the Pt/Vulcan electrocatalyst prepared in the same conditions.
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Language: | English |
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American Chemical Society
2007-06-08
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Subjects: | Catalytic graphitization, Catalyst support, Platinum, Methanol electrooxidation, |
Online Access: | http://hdl.handle.net/10261/134441 http://dx.doi.org/10.13039/501100006280 |
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dig-incar-es-10261-1344412018-11-16T08:15:32Z Synthesis of Graphitic Carbon Nanostructures from Sawdust and Their Application as Electrocatalyst Supports Sevilla Solís, Marta Sanchís, C. Valdés-Solís Iglesias, Teresa Morallón, E. Fuertes Arias, Antonio Benito Ministerio de Ciencia y Tecnología (España) Catalytic graphitization Catalyst support Platinum Methanol electrooxidation We present a novel and facile synthetic method for fabricating graphitic carbon nanostructures (GCNs) from sawdust. This method is based on the use of catalysts (Fe or Ni) that allows the direct conversion of sawdust into highly graphitized carbon material. The following procedure was used to obtain these graphitic nanoparticles: (a) impregnation of the sawdust particles with iron or nickel salts, (b) carbonization of the impregnated material at a temperature of 900 or 1000 °C, and (c) selective removal of the non-graphitized carbon (amorphous carbon) by an oxidant (KMnO4). The resulting carbon is made up of nanosized graphitic structures (i.e., nanocapsules, nanocoils, nanoribbons), which have a high crystallinity, as evidenced by TEM/SAED, XRD and Raman analysis. These GCNs were used as supports for platinum nanoparticles. Such prepared electrocatalysts show an electrocatalytical surface area close to 90 m2.g-1 Pt, and they present a similar or higher electrocatalytic activity toward methanol electrooxidation than the Pt/Vulcan electrocatalyst prepared in the same conditions. The financial support for this research work provided by the Spanish MCyT (MAT2005-00262, MAT2004-01479 and FEDER) is gratefully acknowledged. Peer reviewed 2016-07-05T10:01:34Z 2016-07-05T10:01:34Z 2007-06-08 artículo http://purl.org/coar/resource_type/c_6501 Journal of Physical Chemistry C 111: 9749-9756 (2007) 1932-7447 http://hdl.handle.net/10261/134441 10.1021/jp072246x http://dx.doi.org/10.13039/501100006280 en Postprint http://dx.doi.org/10.1021/jp072246x Sí open American Chemical Society |
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Catalytic graphitization Catalyst support Platinum Methanol electrooxidation Catalytic graphitization Catalyst support Platinum Methanol electrooxidation |
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Catalytic graphitization Catalyst support Platinum Methanol electrooxidation Catalytic graphitization Catalyst support Platinum Methanol electrooxidation Sevilla Solís, Marta Sanchís, C. Valdés-Solís Iglesias, Teresa Morallón, E. Fuertes Arias, Antonio Benito Synthesis of Graphitic Carbon Nanostructures from Sawdust and Their Application as Electrocatalyst Supports |
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We present a novel and facile synthetic method for fabricating graphitic carbon nanostructures (GCNs) from sawdust. This method is based on the use of catalysts (Fe or Ni) that allows the direct conversion of sawdust into highly graphitized carbon material. The following procedure was used to obtain these graphitic nanoparticles: (a) impregnation of the sawdust particles with iron or nickel salts, (b) carbonization of the impregnated material at a temperature of 900 or 1000 °C, and (c) selective removal of the non-graphitized carbon (amorphous carbon) by an oxidant (KMnO4). The resulting carbon is made up of nanosized graphitic structures (i.e., nanocapsules, nanocoils, nanoribbons), which have a high crystallinity, as evidenced by TEM/SAED, XRD and Raman analysis. These GCNs were used as supports for platinum nanoparticles. Such prepared electrocatalysts show an electrocatalytical surface area close to 90 m2.g-1 Pt, and they present a similar or higher electrocatalytic activity toward methanol electrooxidation than the Pt/Vulcan electrocatalyst prepared in the same conditions. |
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Ministerio de Ciencia y Tecnología (España) |
author_facet |
Ministerio de Ciencia y Tecnología (España) Sevilla Solís, Marta Sanchís, C. Valdés-Solís Iglesias, Teresa Morallón, E. Fuertes Arias, Antonio Benito |
format |
artículo |
topic_facet |
Catalytic graphitization Catalyst support Platinum Methanol electrooxidation |
author |
Sevilla Solís, Marta Sanchís, C. Valdés-Solís Iglesias, Teresa Morallón, E. Fuertes Arias, Antonio Benito |
author_sort |
Sevilla Solís, Marta |
title |
Synthesis of Graphitic Carbon Nanostructures from Sawdust and Their Application as Electrocatalyst Supports |
title_short |
Synthesis of Graphitic Carbon Nanostructures from Sawdust and Their Application as Electrocatalyst Supports |
title_full |
Synthesis of Graphitic Carbon Nanostructures from Sawdust and Their Application as Electrocatalyst Supports |
title_fullStr |
Synthesis of Graphitic Carbon Nanostructures from Sawdust and Their Application as Electrocatalyst Supports |
title_full_unstemmed |
Synthesis of Graphitic Carbon Nanostructures from Sawdust and Their Application as Electrocatalyst Supports |
title_sort |
synthesis of graphitic carbon nanostructures from sawdust and their application as electrocatalyst supports |
publisher |
American Chemical Society |
publishDate |
2007-06-08 |
url |
http://hdl.handle.net/10261/134441 http://dx.doi.org/10.13039/501100006280 |
work_keys_str_mv |
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1777668979357122560 |