Citrate-coated, size-tunable octahedral platinum nanocrystals: a novel route for advanced electrocatalysts
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http://hdl.handle.net/10045/83588
Títol: | Citrate-coated, size-tunable octahedral platinum nanocrystals: a novel route for advanced electrocatalysts |
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Autors: | Moglianetti, Mauro | Solla-Gullón, José | Donati, Paolo | Pedone, Deborah | Debellis, Doriana | Sibillano, Teresa | Brescia, Rosaria | Giannini, Cinzia | Montiel, Vicente | Feliu, Juan M. | Pompa, Pier Paolo |
Grups d'investigació o GITE: | Electroquímica de Superficies | Electroquímica Aplicada y Electrocatálisis |
Centre, Departament o Servei: | Universidad de Alicante. Departamento de Química Física | Universidad de Alicante. Instituto Universitario de Electroquímica |
Paraules clau: | Pt nanocrystals | Shape | Citrate-coated | Formic acid electro-oxidation | Octahedral | Green synthesis |
Àrees de coneixement: | Química Física |
Data de publicació: | 8-de novembre-2018 |
Editor: | American Chemical Society |
Citació bibliogràfica: | ACS Applied Materials & Interfaces. 2018, 10(48): 41608-41617. doi:10.1021/acsami.8b11774 |
Resum: | The development of green and scalable syntheses for the preparation of size- and shape-controlled metal nanocrystals is of high interest in many areas, including catalysis, electrocatalysis, nanomedicine, and electronics. In this work, a new synthetic approach based on the synergistic action of physical parameters and reagents produces size-tunable octahedral Pt nanocrystals, without the use of catalyst-poisoning reagents and/or difficult-to-remove coatings. The synthesis requires only sodium citrate, ascorbic acid, and fine control of the reduction rate in aqueous environment. Pt octahedral nanocrystals with particle size as low as 7 nm and highly developed {111} facets have been achieved, as demonstrated by Transmission Electron Microscopy, X-ray Diffraction, and electrochemical methods. The absence of sticky molecules together with the high quality of the surface renders these nanocrystals ideal candidates in electrocatalysis. Notably, 7 nm bismuth-decorated octahedral nanocrystals exhibit superior performance for the electro-oxidation of formic acid in terms of both specific and mass activities. |
Patrocinadors: | JMF and VM acknowledge financial support from MINECO (projects CTQ2016-76221-P and CTQ2016-76231-C2-2-R (AEI/FEDER, UE)). JSG acknowledges financial support from VITC (Vicerrectorado de Investigación y Transferencia de Conocimiento) of the University of Alicante (UATALENTO16-02). |
URI: | http://hdl.handle.net/10045/83588 |
ISSN: | 1944-8244 (Print) | 1944-8252 (Online) |
DOI: | 10.1021/acsami.8b11774 |
Idioma: | eng |
Tipus: | info:eu-repo/semantics/article |
Drets: | © 2018 American Chemical Society |
Revisió científica: | si |
Versió de l'editor: | https://doi.org/10.1021/acsami.8b11774 |
Apareix a la col·lecció: | INV - LEQA - Artículos de Revistas INV - EQSUP - Artículos de Revistas |
Arxius per aquest ítem:
Arxiu | Descripció | Tamany | Format | |
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2018_Moglianetti_etal_ACSApplMaterInterfaces_accepted.pdf | Accepted Manuscript (acceso abierto) | 943,53 kB | Adobe PDF | Obrir Vista prèvia |
2018_Moglianetti_etal_ACSApplMaterInterfaces_final.pdf | Versión final (acceso restringido) | 3,12 MB | Adobe PDF | Obrir Sol·licitar una còpia |
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