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Stable platinum nanoclusters on genomic DNA–graphene oxide with a high oxygen reduction reaction activity
Nanosize platinum clusters with small diameters of 2–4 nm are known to be excellent catalysts for the oxygen reduction reaction. The inherent catalytic activity of smaller platinum clusters has not yet been reported due to a lack of preparation methods to control their size (<2 nm). Here we repor...
Autores principales: | , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Pub. Group
2013
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3731667/ https://www.ncbi.nlm.nih.gov/pubmed/23900456 http://dx.doi.org/10.1038/ncomms3221 |
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author | Tiwari, Jitendra N. Nath, Krishna Kumar, Susheel Tiwari, Rajanish N. Kemp, K. Christian Le, Nhien H. Youn, Duck Hyun Lee, Jae Sung Kim, Kwang S. |
author_facet | Tiwari, Jitendra N. Nath, Krishna Kumar, Susheel Tiwari, Rajanish N. Kemp, K. Christian Le, Nhien H. Youn, Duck Hyun Lee, Jae Sung Kim, Kwang S. |
author_sort | Tiwari, Jitendra N. |
collection | PubMed |
description | Nanosize platinum clusters with small diameters of 2–4 nm are known to be excellent catalysts for the oxygen reduction reaction. The inherent catalytic activity of smaller platinum clusters has not yet been reported due to a lack of preparation methods to control their size (<2 nm). Here we report the synthesis of platinum clusters (diameter ≤1.4 nm) deposited on genomic double-stranded DNA–graphene oxide composites, and their high-performance electrocatalysis of the oxygen reduction reaction. The electrochemical behaviour, characterized by oxygen reduction reaction onset potential, half-wave potential, specific activity, mass activity, accelerated durability test (10,000 cycles) and cyclic voltammetry stability (10,000 cycles) is attributed to the strong interaction between the nanosize platinum clusters and the DNA–graphene oxide composite, which induces modulation in the electronic structure of the platinum clusters. Furthermore, we show that the platinum cluster/DNA–graphene oxide composite possesses notable environmental durability and stability, vital for high-performance fuel cells and batteries. |
format | Online Article Text |
id | pubmed-3731667 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2013 |
publisher | Nature Pub. Group |
record_format | MEDLINE/PubMed |
spelling | pubmed-37316672013-08-02 Stable platinum nanoclusters on genomic DNA–graphene oxide with a high oxygen reduction reaction activity Tiwari, Jitendra N. Nath, Krishna Kumar, Susheel Tiwari, Rajanish N. Kemp, K. Christian Le, Nhien H. Youn, Duck Hyun Lee, Jae Sung Kim, Kwang S. Nat Commun Article Nanosize platinum clusters with small diameters of 2–4 nm are known to be excellent catalysts for the oxygen reduction reaction. The inherent catalytic activity of smaller platinum clusters has not yet been reported due to a lack of preparation methods to control their size (<2 nm). Here we report the synthesis of platinum clusters (diameter ≤1.4 nm) deposited on genomic double-stranded DNA–graphene oxide composites, and their high-performance electrocatalysis of the oxygen reduction reaction. The electrochemical behaviour, characterized by oxygen reduction reaction onset potential, half-wave potential, specific activity, mass activity, accelerated durability test (10,000 cycles) and cyclic voltammetry stability (10,000 cycles) is attributed to the strong interaction between the nanosize platinum clusters and the DNA–graphene oxide composite, which induces modulation in the electronic structure of the platinum clusters. Furthermore, we show that the platinum cluster/DNA–graphene oxide composite possesses notable environmental durability and stability, vital for high-performance fuel cells and batteries. Nature Pub. Group 2013-07-31 /pmc/articles/PMC3731667/ /pubmed/23900456 http://dx.doi.org/10.1038/ncomms3221 Text en Copyright © 2013, Nature Publishing Group, a division of Macmillan Publishers Limited. All Rights Reserved. http://creativecommons.org/licenses/by-nc-sa/3.0/ This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/3.0/ |
spellingShingle | Article Tiwari, Jitendra N. Nath, Krishna Kumar, Susheel Tiwari, Rajanish N. Kemp, K. Christian Le, Nhien H. Youn, Duck Hyun Lee, Jae Sung Kim, Kwang S. Stable platinum nanoclusters on genomic DNA–graphene oxide with a high oxygen reduction reaction activity |
title | Stable platinum nanoclusters on genomic DNA–graphene oxide with a high oxygen reduction reaction activity |
title_full | Stable platinum nanoclusters on genomic DNA–graphene oxide with a high oxygen reduction reaction activity |
title_fullStr | Stable platinum nanoclusters on genomic DNA–graphene oxide with a high oxygen reduction reaction activity |
title_full_unstemmed | Stable platinum nanoclusters on genomic DNA–graphene oxide with a high oxygen reduction reaction activity |
title_short | Stable platinum nanoclusters on genomic DNA–graphene oxide with a high oxygen reduction reaction activity |
title_sort | stable platinum nanoclusters on genomic dna–graphene oxide with a high oxygen reduction reaction activity |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3731667/ https://www.ncbi.nlm.nih.gov/pubmed/23900456 http://dx.doi.org/10.1038/ncomms3221 |
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