Study of PtPd Bimetallic Nanoparticles for Fuel Cell Applications
Autor(a) principal: | |
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Data de Publicação: | 2017 |
Outros Autores: | , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Materials research (São Carlos. Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392017000501193 |
Resumo: | Bimetallic nanoparticles are of special interest for their potential applications for fuel cells, mainly for portable power applications. Among the bimetallic systems, Pt-Pd bimetallic nanoparticles have received great interest as they can be widely used as effective catalysts for various electrochemical reactions. In this work, Pt-Pd alloy bimetallic nanoparticles were synthesized through a chemical reduction method. The nanoparticles were characterized using aberration-corrected scanning/transmission electron microscopy (STEM). Also, parallel beam X-Ray diffraction analysis was carried out to evaluate the crystallographic structure. High-angle annular dark field (HAADF)-STEM images of the Pt-Pd bimetallic nanoparticles were obtained. The contrast of the images shows that the nanoparticles have an alloy structure with an average size of 7.15 nm. To understand the properties of the bimetallic nanoparticles, it is necessary to know the distribution of the elements in the nanostructure. We have used a semi-quantitative method to analyze the HAADF-STEM images, which allowed us to measure the total intensity of the scattered electrons for each atomic column. HAADF-STEM images of the Pt-Pd bimetallic nanoparticles were compared directly with image simulations, good agreement between simulation and experimental images was found. Cyclic voltammetry studies were carried out to analyze the electrochemical behavior of the bimetallic nanoparticles. |
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Materials research (São Carlos. Online) |
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Study of PtPd Bimetallic Nanoparticles for Fuel Cell ApplicationsNanoparticlesPt-PdScanning/transmission electron microscopyAberration correctedCyclic voltammetryBimetallic nanoparticles are of special interest for their potential applications for fuel cells, mainly for portable power applications. Among the bimetallic systems, Pt-Pd bimetallic nanoparticles have received great interest as they can be widely used as effective catalysts for various electrochemical reactions. In this work, Pt-Pd alloy bimetallic nanoparticles were synthesized through a chemical reduction method. The nanoparticles were characterized using aberration-corrected scanning/transmission electron microscopy (STEM). Also, parallel beam X-Ray diffraction analysis was carried out to evaluate the crystallographic structure. High-angle annular dark field (HAADF)-STEM images of the Pt-Pd bimetallic nanoparticles were obtained. The contrast of the images shows that the nanoparticles have an alloy structure with an average size of 7.15 nm. To understand the properties of the bimetallic nanoparticles, it is necessary to know the distribution of the elements in the nanostructure. We have used a semi-quantitative method to analyze the HAADF-STEM images, which allowed us to measure the total intensity of the scattered electrons for each atomic column. HAADF-STEM images of the Pt-Pd bimetallic nanoparticles were compared directly with image simulations, good agreement between simulation and experimental images was found. Cyclic voltammetry studies were carried out to analyze the electrochemical behavior of the bimetallic nanoparticles.ABM, ABC, ABPol2017-10-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392017000501193Materials Research v.20 n.5 2017reponame:Materials research (São Carlos. Online)instname:Universidade Federal de São Carlos (UFSCAR)instacron:ABM ABC ABPOL10.1590/1980-5373-mr-2016-0934info:eu-repo/semantics/openAccessEsparza,RodrigoSantoveña,AlanRuíz-Baltazar,AlvaroAngeles-Pascual,AlvaroBahena,DanielMaya-Cornejo,JoseLedesma-García,JanetPérez,Ramiroeng2017-10-06T00:00:00Zoai:scielo:S1516-14392017000501193Revistahttp://www.scielo.br/mrPUBhttps://old.scielo.br/oai/scielo-oai.phpdedz@power.ufscar.br1980-53731516-1439opendoar:2017-10-06T00:00Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR)false |
dc.title.none.fl_str_mv |
Study of PtPd Bimetallic Nanoparticles for Fuel Cell Applications |
title |
Study of PtPd Bimetallic Nanoparticles for Fuel Cell Applications |
spellingShingle |
Study of PtPd Bimetallic Nanoparticles for Fuel Cell Applications Esparza,Rodrigo Nanoparticles Pt-Pd Scanning/transmission electron microscopy Aberration corrected Cyclic voltammetry |
title_short |
Study of PtPd Bimetallic Nanoparticles for Fuel Cell Applications |
title_full |
Study of PtPd Bimetallic Nanoparticles for Fuel Cell Applications |
title_fullStr |
Study of PtPd Bimetallic Nanoparticles for Fuel Cell Applications |
title_full_unstemmed |
Study of PtPd Bimetallic Nanoparticles for Fuel Cell Applications |
title_sort |
Study of PtPd Bimetallic Nanoparticles for Fuel Cell Applications |
author |
Esparza,Rodrigo |
author_facet |
Esparza,Rodrigo Santoveña,Alan Ruíz-Baltazar,Alvaro Angeles-Pascual,Alvaro Bahena,Daniel Maya-Cornejo,Jose Ledesma-García,Janet Pérez,Ramiro |
author_role |
author |
author2 |
Santoveña,Alan Ruíz-Baltazar,Alvaro Angeles-Pascual,Alvaro Bahena,Daniel Maya-Cornejo,Jose Ledesma-García,Janet Pérez,Ramiro |
author2_role |
author author author author author author author |
dc.contributor.author.fl_str_mv |
Esparza,Rodrigo Santoveña,Alan Ruíz-Baltazar,Alvaro Angeles-Pascual,Alvaro Bahena,Daniel Maya-Cornejo,Jose Ledesma-García,Janet Pérez,Ramiro |
dc.subject.por.fl_str_mv |
Nanoparticles Pt-Pd Scanning/transmission electron microscopy Aberration corrected Cyclic voltammetry |
topic |
Nanoparticles Pt-Pd Scanning/transmission electron microscopy Aberration corrected Cyclic voltammetry |
description |
Bimetallic nanoparticles are of special interest for their potential applications for fuel cells, mainly for portable power applications. Among the bimetallic systems, Pt-Pd bimetallic nanoparticles have received great interest as they can be widely used as effective catalysts for various electrochemical reactions. In this work, Pt-Pd alloy bimetallic nanoparticles were synthesized through a chemical reduction method. The nanoparticles were characterized using aberration-corrected scanning/transmission electron microscopy (STEM). Also, parallel beam X-Ray diffraction analysis was carried out to evaluate the crystallographic structure. High-angle annular dark field (HAADF)-STEM images of the Pt-Pd bimetallic nanoparticles were obtained. The contrast of the images shows that the nanoparticles have an alloy structure with an average size of 7.15 nm. To understand the properties of the bimetallic nanoparticles, it is necessary to know the distribution of the elements in the nanostructure. We have used a semi-quantitative method to analyze the HAADF-STEM images, which allowed us to measure the total intensity of the scattered electrons for each atomic column. HAADF-STEM images of the Pt-Pd bimetallic nanoparticles were compared directly with image simulations, good agreement between simulation and experimental images was found. Cyclic voltammetry studies were carried out to analyze the electrochemical behavior of the bimetallic nanoparticles. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017-10-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392017000501193 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392017000501193 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/1980-5373-mr-2016-0934 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
ABM, ABC, ABPol |
publisher.none.fl_str_mv |
ABM, ABC, ABPol |
dc.source.none.fl_str_mv |
Materials Research v.20 n.5 2017 reponame:Materials research (São Carlos. Online) instname:Universidade Federal de São Carlos (UFSCAR) instacron:ABM ABC ABPOL |
instname_str |
Universidade Federal de São Carlos (UFSCAR) |
instacron_str |
ABM ABC ABPOL |
institution |
ABM ABC ABPOL |
reponame_str |
Materials research (São Carlos. Online) |
collection |
Materials research (São Carlos. Online) |
repository.name.fl_str_mv |
Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR) |
repository.mail.fl_str_mv |
dedz@power.ufscar.br |
_version_ |
1754212671000936448 |