Surface and Catalytical effects on Treated Carbon Materials for Hydrogen Peroxide Electrogeneration
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1007/s12678-015-0279-5 http://hdl.handle.net/11449/177699 |
Resumo: | This work focuses on the catalytic activity and surface modification of Vulcan XC 72R and Printex L6 toward the oxygen reduction reaction (ORR) after the carbon supports were subjected to a pre-treatment with nitric acid or ammonia. The results indicated that acid-treated Printex L6 was the best-suited material toward the two-electron pathway of the ORR. This material contained the largest concentration of oxygenated acid species and hydrogen, as determined by XPS, the Boehm method, and elemental analysis. The enhanced formation of H2O2 for acid-treated Printex L6 can be explained by the presence of oxygenated acid species increasing the hydrophilic character of the carbon support. The hydrophilicity of the material was investigated by contact angle measurements. However, the changes of the surface area, porosity, and the aliphatic chains of the carbons induced by the pre-treatments and the contributions of these factors to H2O2 production cannot be disregarded. |
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Surface and Catalytical effects on Treated Carbon Materials for Hydrogen Peroxide ElectrogenerationCarbon supportsElectrogeneration of hydrogen peroxideOxygen reduction reaction (ORR)This work focuses on the catalytic activity and surface modification of Vulcan XC 72R and Printex L6 toward the oxygen reduction reaction (ORR) after the carbon supports were subjected to a pre-treatment with nitric acid or ammonia. The results indicated that acid-treated Printex L6 was the best-suited material toward the two-electron pathway of the ORR. This material contained the largest concentration of oxygenated acid species and hydrogen, as determined by XPS, the Boehm method, and elemental analysis. The enhanced formation of H2O2 for acid-treated Printex L6 can be explained by the presence of oxygenated acid species increasing the hydrophilic character of the carbon support. The hydrophilicity of the material was investigated by contact angle measurements. However, the changes of the surface area, porosity, and the aliphatic chains of the carbons induced by the pre-treatments and the contributions of these factors to H2O2 production cannot be disregarded.Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)LEMN - Laboratório de Eletroquímica e Materiais Nanoestruturados - CCNH -Centro de Ciências Naturais e Humanas UFABC - Universidade federal do ABC, CEP 09.210-170, Rua Santa Adélia 166, Bairro BanguInstituto de Química de São Carlos Universidade de São Paulo, Caixa Postal 780Instituto de Química UNESP Universidade Estadual PaulistaInstituto de Química UNESP Universidade Estadual PaulistaCNPq: 150639/2013-9CAPES: 2005/59992-6FAPESP: 2005/59992-6CAPES: 2007/04759-0FAPESP: 2007/04759-0CAPES: 2008/58789-0FAPESP: 2008/58789-0CAPES: 2009/07859-1FAPESP: 2009/07859-1CAPES: 2009/09145-6FAPESP: 2009/09145-6CAPES: 2010/04539-3FAPESP: 2010/04539-3CAPES: 2011/21656-6FAPESP: 2011/21656-6CNPq: 406612/2013-7CNPq: 474913/2012-0CNPq: 577292/2008-0Universidade Federal do ABC (UFABC)Universidade de São Paulo (USP)Universidade Estadual Paulista (Unesp)Moraes, A.Assumpção, M. H.M.T.Simões, F. C.Antonin, V. S.Lanza, M. R.V.Hammer, P. [UNESP]Santos, M. C.2018-12-11T17:26:41Z2018-12-11T17:26:41Z2016-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article60-69application/pdfhttp://dx.doi.org/10.1007/s12678-015-0279-5Electrocatalysis, v. 7, n. 1, p. 60-69, 2016.1868-59941868-2529http://hdl.handle.net/11449/17769910.1007/s12678-015-0279-52-s2.0-849534316102-s2.0-84953431610.pdf64668410235061310000-0002-3823-0050Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengElectrocatalysis0,9940,994info:eu-repo/semantics/openAccess2023-11-16T06:15:06Zoai:repositorio.unesp.br:11449/177699Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T17:53:10.252019Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Surface and Catalytical effects on Treated Carbon Materials for Hydrogen Peroxide Electrogeneration |
title |
Surface and Catalytical effects on Treated Carbon Materials for Hydrogen Peroxide Electrogeneration |
spellingShingle |
Surface and Catalytical effects on Treated Carbon Materials for Hydrogen Peroxide Electrogeneration Moraes, A. Carbon supports Electrogeneration of hydrogen peroxide Oxygen reduction reaction (ORR) |
title_short |
Surface and Catalytical effects on Treated Carbon Materials for Hydrogen Peroxide Electrogeneration |
title_full |
Surface and Catalytical effects on Treated Carbon Materials for Hydrogen Peroxide Electrogeneration |
title_fullStr |
Surface and Catalytical effects on Treated Carbon Materials for Hydrogen Peroxide Electrogeneration |
title_full_unstemmed |
Surface and Catalytical effects on Treated Carbon Materials for Hydrogen Peroxide Electrogeneration |
title_sort |
Surface and Catalytical effects on Treated Carbon Materials for Hydrogen Peroxide Electrogeneration |
author |
Moraes, A. |
author_facet |
Moraes, A. Assumpção, M. H.M.T. Simões, F. C. Antonin, V. S. Lanza, M. R.V. Hammer, P. [UNESP] Santos, M. C. |
author_role |
author |
author2 |
Assumpção, M. H.M.T. Simões, F. C. Antonin, V. S. Lanza, M. R.V. Hammer, P. [UNESP] Santos, M. C. |
author2_role |
author author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Federal do ABC (UFABC) Universidade de São Paulo (USP) Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Moraes, A. Assumpção, M. H.M.T. Simões, F. C. Antonin, V. S. Lanza, M. R.V. Hammer, P. [UNESP] Santos, M. C. |
dc.subject.por.fl_str_mv |
Carbon supports Electrogeneration of hydrogen peroxide Oxygen reduction reaction (ORR) |
topic |
Carbon supports Electrogeneration of hydrogen peroxide Oxygen reduction reaction (ORR) |
description |
This work focuses on the catalytic activity and surface modification of Vulcan XC 72R and Printex L6 toward the oxygen reduction reaction (ORR) after the carbon supports were subjected to a pre-treatment with nitric acid or ammonia. The results indicated that acid-treated Printex L6 was the best-suited material toward the two-electron pathway of the ORR. This material contained the largest concentration of oxygenated acid species and hydrogen, as determined by XPS, the Boehm method, and elemental analysis. The enhanced formation of H2O2 for acid-treated Printex L6 can be explained by the presence of oxygenated acid species increasing the hydrophilic character of the carbon support. The hydrophilicity of the material was investigated by contact angle measurements. However, the changes of the surface area, porosity, and the aliphatic chains of the carbons induced by the pre-treatments and the contributions of these factors to H2O2 production cannot be disregarded. |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016-01-01 2018-12-11T17:26:41Z 2018-12-11T17:26:41Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1007/s12678-015-0279-5 Electrocatalysis, v. 7, n. 1, p. 60-69, 2016. 1868-5994 1868-2529 http://hdl.handle.net/11449/177699 10.1007/s12678-015-0279-5 2-s2.0-84953431610 2-s2.0-84953431610.pdf 6466841023506131 0000-0002-3823-0050 |
url |
http://dx.doi.org/10.1007/s12678-015-0279-5 http://hdl.handle.net/11449/177699 |
identifier_str_mv |
Electrocatalysis, v. 7, n. 1, p. 60-69, 2016. 1868-5994 1868-2529 10.1007/s12678-015-0279-5 2-s2.0-84953431610 2-s2.0-84953431610.pdf 6466841023506131 0000-0002-3823-0050 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Electrocatalysis 0,994 0,994 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
60-69 application/pdf |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808128870601195520 |