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Intermetallic Pd(3)X (X= Ti and Zr) nanocrystals for electro-oxidation of alcohols and formic acid in alkaline and acidic media
Two highly active and stable Pd-based intermetallic nanocrystals with early d-metals Pd(3)Ti and Pd(3)Zr have been developed. The nanocrystals are synthesized by co-reduction of the respective salts of Pd and Ti/Zr. Hard X-ray photoemission Spectroscopy (HAXPES) analysis of the nanocrystals indicate...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
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Taylor & Francis
2020
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7476510/ https://www.ncbi.nlm.nih.gov/pubmed/32939181 http://dx.doi.org/10.1080/14686996.2020.1789437 |
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author | Kodiyath, Rajesh V. Ramesh, Gubbala Manikandan, Maidhily Ueda, Shigenori Fujita, Takeshi Abe, Hideki |
author_facet | Kodiyath, Rajesh V. Ramesh, Gubbala Manikandan, Maidhily Ueda, Shigenori Fujita, Takeshi Abe, Hideki |
author_sort | Kodiyath, Rajesh |
collection | PubMed |
description | Two highly active and stable Pd-based intermetallic nanocrystals with early d-metals Pd(3)Ti and Pd(3)Zr have been developed. The nanocrystals are synthesized by co-reduction of the respective salts of Pd and Ti/Zr. Hard X-ray photoemission Spectroscopy (HAXPES) analysis of the nanocrystals indicates that the electronic properties of Pd are modified significantly, as evident from the lowering of the d-band center of Pd. The intermetallic nanocrystals dispersed in Vulcan carbon, Pd(3)Ti/C and Pd(3)Zr/C, exhibit improved electrocatalytic activity towards methanol and ethanol oxidation in an alkaline medium (0.5 M KOH), compared to those of commercially available catalysts such as Pd/C, Pt/C, and Pt(3)Sn/C. In addition, Pd(3)Ti/C and Pd(3)Zr/C show significantly higher activity towards the oxidation of formic acid in an acidic medium (0.5 M H(2)SO(4)), compared to those of Pd/C and Pt/C. The modification of the d-band center of Pd as a result of the alloying of Pd with the early d-metals Ti and Zr may be responsible for the enhanced catalytic activity. |
format | Online Article Text |
id | pubmed-7476510 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | Taylor & Francis |
record_format | MEDLINE/PubMed |
spelling | pubmed-74765102020-09-15 Intermetallic Pd(3)X (X= Ti and Zr) nanocrystals for electro-oxidation of alcohols and formic acid in alkaline and acidic media Kodiyath, Rajesh V. Ramesh, Gubbala Manikandan, Maidhily Ueda, Shigenori Fujita, Takeshi Abe, Hideki Sci Technol Adv Mater Focus on Intermetallic Catalysts Two highly active and stable Pd-based intermetallic nanocrystals with early d-metals Pd(3)Ti and Pd(3)Zr have been developed. The nanocrystals are synthesized by co-reduction of the respective salts of Pd and Ti/Zr. Hard X-ray photoemission Spectroscopy (HAXPES) analysis of the nanocrystals indicates that the electronic properties of Pd are modified significantly, as evident from the lowering of the d-band center of Pd. The intermetallic nanocrystals dispersed in Vulcan carbon, Pd(3)Ti/C and Pd(3)Zr/C, exhibit improved electrocatalytic activity towards methanol and ethanol oxidation in an alkaline medium (0.5 M KOH), compared to those of commercially available catalysts such as Pd/C, Pt/C, and Pt(3)Sn/C. In addition, Pd(3)Ti/C and Pd(3)Zr/C show significantly higher activity towards the oxidation of formic acid in an acidic medium (0.5 M H(2)SO(4)), compared to those of Pd/C and Pt/C. The modification of the d-band center of Pd as a result of the alloying of Pd with the early d-metals Ti and Zr may be responsible for the enhanced catalytic activity. Taylor & Francis 2020-08-24 /pmc/articles/PMC7476510/ /pubmed/32939181 http://dx.doi.org/10.1080/14686996.2020.1789437 Text en © 2020 The Author(s). Published by National Institute for Materials Science in partnership with Taylor & Francis Group. https://creativecommons.org/licenses/by/4.0/This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) ), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Focus on Intermetallic Catalysts Kodiyath, Rajesh V. Ramesh, Gubbala Manikandan, Maidhily Ueda, Shigenori Fujita, Takeshi Abe, Hideki Intermetallic Pd(3)X (X= Ti and Zr) nanocrystals for electro-oxidation of alcohols and formic acid in alkaline and acidic media |
title | Intermetallic Pd(3)X (X= Ti and Zr) nanocrystals for electro-oxidation of alcohols and formic acid in alkaline and acidic media |
title_full | Intermetallic Pd(3)X (X= Ti and Zr) nanocrystals for electro-oxidation of alcohols and formic acid in alkaline and acidic media |
title_fullStr | Intermetallic Pd(3)X (X= Ti and Zr) nanocrystals for electro-oxidation of alcohols and formic acid in alkaline and acidic media |
title_full_unstemmed | Intermetallic Pd(3)X (X= Ti and Zr) nanocrystals for electro-oxidation of alcohols and formic acid in alkaline and acidic media |
title_short | Intermetallic Pd(3)X (X= Ti and Zr) nanocrystals for electro-oxidation of alcohols and formic acid in alkaline and acidic media |
title_sort | intermetallic pd(3)x (x= ti and zr) nanocrystals for electro-oxidation of alcohols and formic acid in alkaline and acidic media |
topic | Focus on Intermetallic Catalysts |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7476510/ https://www.ncbi.nlm.nih.gov/pubmed/32939181 http://dx.doi.org/10.1080/14686996.2020.1789437 |
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