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Atomic Surface Segregation and Structural Characterization of PdPt Bimetallic Nanoparticles
Bimetallic nanoparticles are of interest since they lead to many interesting electrical, chemical, catalytic, and optical properties. They are particularly important in the field of catalysis since they show superior catalytic properties than their monometallic counterparts. The structures of bimeta...
Autores principales: | , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2018
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6212869/ https://www.ncbi.nlm.nih.gov/pubmed/30279340 http://dx.doi.org/10.3390/ma11101882 |
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author | Rodríguez-Proenza, Carlos A. Palomares-Báez, Juan P. Chávez-Rojo, Marco A. García-Ruiz, Amado F. Azanza-Ricardo, Cristy L. Santoveña-Uribe, Alan Luna-Bárcenas, Gabriel Rodríguez-López, José L. Esparza, Rodrigo |
author_facet | Rodríguez-Proenza, Carlos A. Palomares-Báez, Juan P. Chávez-Rojo, Marco A. García-Ruiz, Amado F. Azanza-Ricardo, Cristy L. Santoveña-Uribe, Alan Luna-Bárcenas, Gabriel Rodríguez-López, José L. Esparza, Rodrigo |
author_sort | Rodríguez-Proenza, Carlos A. |
collection | PubMed |
description | Bimetallic nanoparticles are of interest since they lead to many interesting electrical, chemical, catalytic, and optical properties. They are particularly important in the field of catalysis since they show superior catalytic properties than their monometallic counterparts. The structures of bimetallic nanoparticles depend mainly on the synthesis conditions and the miscibility of the two components. In this work, PdPt alloyed-bimetallic nanoparticles (NPs) were synthesized through the polyol method, and characterized using spherical aberration (Cs) corrected scanning transmission electron microscopy (STEM). High-angle annular dark-field (HAADF)-STEM images of bimetallic nanoparticles were obtained. The contrast of images shows that nanoparticles have an alloy structure with an average size of 8.2 nm. Together with the characterization of nanoparticles, a systematic molecular dynamics simulations study focused on the structural stability and atomic surface segregation trends in 923-atom PdPt alloyed-bimetallic NPs was carried out. |
format | Online Article Text |
id | pubmed-6212869 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-62128692018-11-14 Atomic Surface Segregation and Structural Characterization of PdPt Bimetallic Nanoparticles Rodríguez-Proenza, Carlos A. Palomares-Báez, Juan P. Chávez-Rojo, Marco A. García-Ruiz, Amado F. Azanza-Ricardo, Cristy L. Santoveña-Uribe, Alan Luna-Bárcenas, Gabriel Rodríguez-López, José L. Esparza, Rodrigo Materials (Basel) Article Bimetallic nanoparticles are of interest since they lead to many interesting electrical, chemical, catalytic, and optical properties. They are particularly important in the field of catalysis since they show superior catalytic properties than their monometallic counterparts. The structures of bimetallic nanoparticles depend mainly on the synthesis conditions and the miscibility of the two components. In this work, PdPt alloyed-bimetallic nanoparticles (NPs) were synthesized through the polyol method, and characterized using spherical aberration (Cs) corrected scanning transmission electron microscopy (STEM). High-angle annular dark-field (HAADF)-STEM images of bimetallic nanoparticles were obtained. The contrast of images shows that nanoparticles have an alloy structure with an average size of 8.2 nm. Together with the characterization of nanoparticles, a systematic molecular dynamics simulations study focused on the structural stability and atomic surface segregation trends in 923-atom PdPt alloyed-bimetallic NPs was carried out. MDPI 2018-10-02 /pmc/articles/PMC6212869/ /pubmed/30279340 http://dx.doi.org/10.3390/ma11101882 Text en © 2018 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Rodríguez-Proenza, Carlos A. Palomares-Báez, Juan P. Chávez-Rojo, Marco A. García-Ruiz, Amado F. Azanza-Ricardo, Cristy L. Santoveña-Uribe, Alan Luna-Bárcenas, Gabriel Rodríguez-López, José L. Esparza, Rodrigo Atomic Surface Segregation and Structural Characterization of PdPt Bimetallic Nanoparticles |
title | Atomic Surface Segregation and Structural Characterization of PdPt Bimetallic Nanoparticles |
title_full | Atomic Surface Segregation and Structural Characterization of PdPt Bimetallic Nanoparticles |
title_fullStr | Atomic Surface Segregation and Structural Characterization of PdPt Bimetallic Nanoparticles |
title_full_unstemmed | Atomic Surface Segregation and Structural Characterization of PdPt Bimetallic Nanoparticles |
title_short | Atomic Surface Segregation and Structural Characterization of PdPt Bimetallic Nanoparticles |
title_sort | atomic surface segregation and structural characterization of pdpt bimetallic nanoparticles |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6212869/ https://www.ncbi.nlm.nih.gov/pubmed/30279340 http://dx.doi.org/10.3390/ma11101882 |
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