Cargando…

Hydrogen Promotes the Growth of Platinum Pyramidal Nanocrystals by Size-Dependent Symmetry Breaking

[Image: see text] The growth of pyramidal platinum nanocrystals is studied by a combination of synthesis/characterization experiments and density functional theory calculations. It is shown that the growth of pyramidal shapes is due to a peculiar type of symmetry breaking, which is caused by the ads...

Descripción completa

Detalles Bibliográficos
Autores principales: Nelli, Diana, Mastronardi, Valentina, Brescia, Rosaria, Pompa, Pier Paolo, Moglianetti, Mauro, Ferrando, Riccardo
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2023
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10103309/
https://www.ncbi.nlm.nih.gov/pubmed/36995102
http://dx.doi.org/10.1021/acs.nanolett.2c04982
_version_ 1785025837396918272
author Nelli, Diana
Mastronardi, Valentina
Brescia, Rosaria
Pompa, Pier Paolo
Moglianetti, Mauro
Ferrando, Riccardo
author_facet Nelli, Diana
Mastronardi, Valentina
Brescia, Rosaria
Pompa, Pier Paolo
Moglianetti, Mauro
Ferrando, Riccardo
author_sort Nelli, Diana
collection PubMed
description [Image: see text] The growth of pyramidal platinum nanocrystals is studied by a combination of synthesis/characterization experiments and density functional theory calculations. It is shown that the growth of pyramidal shapes is due to a peculiar type of symmetry breaking, which is caused by the adsorption of hydrogen on the growing nanocrystals. Specifically, the growth of pyramidal shapes is attributed to the size-dependent adsorption energies of hydrogen atoms on {100} facets, whose growth is hindered only if they are sufficiently large. The crucial role of hydrogen adsorption is further confirmed by the absence of pyramidal nanocrystals in experiments where the reduction process does not involve hydrogen.
format Online
Article
Text
id pubmed-10103309
institution National Center for Biotechnology Information
language English
publishDate 2023
publisher American Chemical Society
record_format MEDLINE/PubMed
spelling pubmed-101033092023-04-15 Hydrogen Promotes the Growth of Platinum Pyramidal Nanocrystals by Size-Dependent Symmetry Breaking Nelli, Diana Mastronardi, Valentina Brescia, Rosaria Pompa, Pier Paolo Moglianetti, Mauro Ferrando, Riccardo Nano Lett [Image: see text] The growth of pyramidal platinum nanocrystals is studied by a combination of synthesis/characterization experiments and density functional theory calculations. It is shown that the growth of pyramidal shapes is due to a peculiar type of symmetry breaking, which is caused by the adsorption of hydrogen on the growing nanocrystals. Specifically, the growth of pyramidal shapes is attributed to the size-dependent adsorption energies of hydrogen atoms on {100} facets, whose growth is hindered only if they are sufficiently large. The crucial role of hydrogen adsorption is further confirmed by the absence of pyramidal nanocrystals in experiments where the reduction process does not involve hydrogen. American Chemical Society 2023-03-30 /pmc/articles/PMC10103309/ /pubmed/36995102 http://dx.doi.org/10.1021/acs.nanolett.2c04982 Text en © 2023 The Authors. Published by American Chemical Society https://creativecommons.org/licenses/by/4.0/Permits the broadest form of re-use including for commercial purposes, provided that author attribution and integrity are maintained (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Nelli, Diana
Mastronardi, Valentina
Brescia, Rosaria
Pompa, Pier Paolo
Moglianetti, Mauro
Ferrando, Riccardo
Hydrogen Promotes the Growth of Platinum Pyramidal Nanocrystals by Size-Dependent Symmetry Breaking
title Hydrogen Promotes the Growth of Platinum Pyramidal Nanocrystals by Size-Dependent Symmetry Breaking
title_full Hydrogen Promotes the Growth of Platinum Pyramidal Nanocrystals by Size-Dependent Symmetry Breaking
title_fullStr Hydrogen Promotes the Growth of Platinum Pyramidal Nanocrystals by Size-Dependent Symmetry Breaking
title_full_unstemmed Hydrogen Promotes the Growth of Platinum Pyramidal Nanocrystals by Size-Dependent Symmetry Breaking
title_short Hydrogen Promotes the Growth of Platinum Pyramidal Nanocrystals by Size-Dependent Symmetry Breaking
title_sort hydrogen promotes the growth of platinum pyramidal nanocrystals by size-dependent symmetry breaking
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10103309/
https://www.ncbi.nlm.nih.gov/pubmed/36995102
http://dx.doi.org/10.1021/acs.nanolett.2c04982
work_keys_str_mv AT nellidiana hydrogenpromotesthegrowthofplatinumpyramidalnanocrystalsbysizedependentsymmetrybreaking
AT mastronardivalentina hydrogenpromotesthegrowthofplatinumpyramidalnanocrystalsbysizedependentsymmetrybreaking
AT bresciarosaria hydrogenpromotesthegrowthofplatinumpyramidalnanocrystalsbysizedependentsymmetrybreaking
AT pompapierpaolo hydrogenpromotesthegrowthofplatinumpyramidalnanocrystalsbysizedependentsymmetrybreaking
AT moglianettimauro hydrogenpromotesthegrowthofplatinumpyramidalnanocrystalsbysizedependentsymmetrybreaking
AT ferrandoriccardo hydrogenpromotesthegrowthofplatinumpyramidalnanocrystalsbysizedependentsymmetrybreaking