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Au-Based Catalysts: Electrochemical Characterization for Structural Insights
Au-based catalysts are widely used in important processes because of their peculiar characteristics. The catalyst performance depends strongly on the nature and structure of the metal nanoparticles, especially in the case of bimetallic catalysts where synergistic effects between the two metals can b...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2016
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6273142/ https://www.ncbi.nlm.nih.gov/pubmed/26927043 http://dx.doi.org/10.3390/molecules21030261 |
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author | Pifferi, Valentina Chan-Thaw, Carine E. Campisi, Sebastiano Testolin, Anna Villa, Alberto Falciola, Luigi Prati, Laura |
author_facet | Pifferi, Valentina Chan-Thaw, Carine E. Campisi, Sebastiano Testolin, Anna Villa, Alberto Falciola, Luigi Prati, Laura |
author_sort | Pifferi, Valentina |
collection | PubMed |
description | Au-based catalysts are widely used in important processes because of their peculiar characteristics. The catalyst performance depends strongly on the nature and structure of the metal nanoparticles, especially in the case of bimetallic catalysts where synergistic effects between the two metals can be occasionally seen. In this paper, it is shown that electrochemical characterisation (cyclovoltammetry CV and electrochemical impedance spectroscopy EIS) of AuPd systems can be used to determine the presence of an electronic interaction between the two metals, thus providing a strong support in the determination of the nature of the synergy between Au and Pd in the liquid phase oxidation of alcohols. However, it seems likely that the strong difference in the catalytic behavior between the single metals and the bimetallic system is connected not only to the redox behaviour, but also to the energetic balance between the different elementary steps of the reaction. |
format | Online Article Text |
id | pubmed-6273142 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2016 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-62731422018-12-28 Au-Based Catalysts: Electrochemical Characterization for Structural Insights Pifferi, Valentina Chan-Thaw, Carine E. Campisi, Sebastiano Testolin, Anna Villa, Alberto Falciola, Luigi Prati, Laura Molecules Article Au-based catalysts are widely used in important processes because of their peculiar characteristics. The catalyst performance depends strongly on the nature and structure of the metal nanoparticles, especially in the case of bimetallic catalysts where synergistic effects between the two metals can be occasionally seen. In this paper, it is shown that electrochemical characterisation (cyclovoltammetry CV and electrochemical impedance spectroscopy EIS) of AuPd systems can be used to determine the presence of an electronic interaction between the two metals, thus providing a strong support in the determination of the nature of the synergy between Au and Pd in the liquid phase oxidation of alcohols. However, it seems likely that the strong difference in the catalytic behavior between the single metals and the bimetallic system is connected not only to the redox behaviour, but also to the energetic balance between the different elementary steps of the reaction. MDPI 2016-02-25 /pmc/articles/PMC6273142/ /pubmed/26927043 http://dx.doi.org/10.3390/molecules21030261 Text en © 2016 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons by Attribution (CC-BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Pifferi, Valentina Chan-Thaw, Carine E. Campisi, Sebastiano Testolin, Anna Villa, Alberto Falciola, Luigi Prati, Laura Au-Based Catalysts: Electrochemical Characterization for Structural Insights |
title | Au-Based Catalysts: Electrochemical Characterization for Structural Insights |
title_full | Au-Based Catalysts: Electrochemical Characterization for Structural Insights |
title_fullStr | Au-Based Catalysts: Electrochemical Characterization for Structural Insights |
title_full_unstemmed | Au-Based Catalysts: Electrochemical Characterization for Structural Insights |
title_short | Au-Based Catalysts: Electrochemical Characterization for Structural Insights |
title_sort | au-based catalysts: electrochemical characterization for structural insights |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6273142/ https://www.ncbi.nlm.nih.gov/pubmed/26927043 http://dx.doi.org/10.3390/molecules21030261 |
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