Dealloying of Nitrogen-Introduced Pt–Co Alloy Nanoparticles: Preferential Core–Shell Formation with Enhanced Activity for Oxygen Reduction Reaction

[Image: see text] Voltammetric dealloying is a typical method to synthesize Pt-shell/less-noble metal (M) alloy core nanoparticles (NPs) toward the oxygen reduction reaction (ORR). The pristine nanostructures of the Pt–M alloy NPs should determine the ORR activity of the dealloyed NPs. In this study...

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Detalles Bibliográficos
Autores principales: Takahashi, Shuntaro, Takahashi, Naoki, Todoroki, Naoto, Wadayama, Toshimasa
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2016
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6640784/
https://www.ncbi.nlm.nih.gov/pubmed/31457193
http://dx.doi.org/10.1021/acsomega.6b00412
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author Takahashi, Shuntaro
Takahashi, Naoki
Todoroki, Naoto
Wadayama, Toshimasa
author_facet Takahashi, Shuntaro
Takahashi, Naoki
Todoroki, Naoto
Wadayama, Toshimasa
author_sort Takahashi, Shuntaro
collection PubMed
description [Image: see text] Voltammetric dealloying is a typical method to synthesize Pt-shell/less-noble metal (M) alloy core nanoparticles (NPs) toward the oxygen reduction reaction (ORR). The pristine nanostructures of the Pt–M alloy NPs should determine the ORR activity of the dealloyed NPs. In this study, we investigated the voltammetric dealloying behavior of the Pt–Co and nitrogen-introduced Pt–Co alloy NPs generated by synchronous arc-plasma deposition of Pt and Co. The results showed that the dealloying behavior is sensitive to cobalt nitride in the pristine NPs, leading to the preferential generation of a Pt-rich shell/Pt–Co alloy core architecture having enhanced ORR activity.
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spelling pubmed-66407842019-08-27 Dealloying of Nitrogen-Introduced Pt–Co Alloy Nanoparticles: Preferential Core–Shell Formation with Enhanced Activity for Oxygen Reduction Reaction Takahashi, Shuntaro Takahashi, Naoki Todoroki, Naoto Wadayama, Toshimasa ACS Omega [Image: see text] Voltammetric dealloying is a typical method to synthesize Pt-shell/less-noble metal (M) alloy core nanoparticles (NPs) toward the oxygen reduction reaction (ORR). The pristine nanostructures of the Pt–M alloy NPs should determine the ORR activity of the dealloyed NPs. In this study, we investigated the voltammetric dealloying behavior of the Pt–Co and nitrogen-introduced Pt–Co alloy NPs generated by synchronous arc-plasma deposition of Pt and Co. The results showed that the dealloying behavior is sensitive to cobalt nitride in the pristine NPs, leading to the preferential generation of a Pt-rich shell/Pt–Co alloy core architecture having enhanced ORR activity. American Chemical Society 2016-12-15 /pmc/articles/PMC6640784/ /pubmed/31457193 http://dx.doi.org/10.1021/acsomega.6b00412 Text en Copyright © 2016 American Chemical Society This is an open access article published under an ACS AuthorChoice License (http://pubs.acs.org/page/policy/authorchoice_termsofuse.html) , which permits copying and redistribution of the article or any adaptations for non-commercial purposes.
spellingShingle Takahashi, Shuntaro
Takahashi, Naoki
Todoroki, Naoto
Wadayama, Toshimasa
Dealloying of Nitrogen-Introduced Pt–Co Alloy Nanoparticles: Preferential Core–Shell Formation with Enhanced Activity for Oxygen Reduction Reaction
title Dealloying of Nitrogen-Introduced Pt–Co Alloy Nanoparticles: Preferential Core–Shell Formation with Enhanced Activity for Oxygen Reduction Reaction
title_full Dealloying of Nitrogen-Introduced Pt–Co Alloy Nanoparticles: Preferential Core–Shell Formation with Enhanced Activity for Oxygen Reduction Reaction
title_fullStr Dealloying of Nitrogen-Introduced Pt–Co Alloy Nanoparticles: Preferential Core–Shell Formation with Enhanced Activity for Oxygen Reduction Reaction
title_full_unstemmed Dealloying of Nitrogen-Introduced Pt–Co Alloy Nanoparticles: Preferential Core–Shell Formation with Enhanced Activity for Oxygen Reduction Reaction
title_short Dealloying of Nitrogen-Introduced Pt–Co Alloy Nanoparticles: Preferential Core–Shell Formation with Enhanced Activity for Oxygen Reduction Reaction
title_sort dealloying of nitrogen-introduced pt–co alloy nanoparticles: preferential core–shell formation with enhanced activity for oxygen reduction reaction
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6640784/
https://www.ncbi.nlm.nih.gov/pubmed/31457193
http://dx.doi.org/10.1021/acsomega.6b00412
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