Surface and Catalytical effects on Treated Carbon Materials for Hydrogen Peroxide Electrogeneration

Detalhes bibliográficos
Autor(a) principal: Moraes, A.
Data de Publicação: 2016
Outros Autores: Assumpção, M. H.M.T., Simões, F. C., Antonin, V. S., Lanza, M. R.V., Hammer, P. [UNESP], Santos, M. C.
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.
id UNSP_f8839e2fa3ea8e48ee1485f6e3a43f48
oai_identifier_str oai:repositorio.unesp.br:11449/177699
network_acronym_str UNSP
network_name_str Repositório Institucional da UNESP
repository_id_str 2946
spelling 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