Probing the atomically diffuse interfaces in Pd@Pt core-shell nanoparticles in three dimensions.
Journal
Nature communications
ISSN: 2041-1723
Titre abrégé: Nat Commun
Pays: England
ID NLM: 101528555
Informations de publication
Date de publication:
22 May 2023
22 May 2023
Historique:
received:
07
10
2022
accepted:
05
05
2023
medline:
23
5
2023
pubmed:
23
5
2023
entrez:
22
5
2023
Statut:
epublish
Résumé
Deciphering the three-dimensional atomic structure of solid-solid interfaces in core-shell nanomaterials is the key to understand their catalytical, optical and electronic properties. Here, we probe the three-dimensional atomic structures of palladium-platinum core-shell nanoparticles at the single-atom level using atomic resolution electron tomography. We quantify the rich structural variety of core-shell nanoparticles with heteroepitaxy in 3D at atomic resolution. Instead of forming an atomically-sharp boundary, the core-shell interface is found to be atomically diffuse with an average thickness of 4.2 Å, irrespective of the particle's morphology or crystallographic texture. The high concentration of Pd in the diffusive interface is highly related to the free Pd atoms dissolved from the Pd seeds, which is confirmed by atomic images of Pd and Pt single atoms and sub-nanometer clusters using cryogenic electron microscopy. These results advance our understanding of core-shell structures at the fundamental level, providing potential strategies into precise nanomaterial manipulation and chemical property regulation.
Identifiants
pubmed: 37217475
doi: 10.1038/s41467-023-38536-z
pii: 10.1038/s41467-023-38536-z
pmc: PMC10203131
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
2934Subventions
Organisme : National Natural Science Foundation of China (National Science Foundation of China)
ID : 22172003
Organisme : National Natural Science Foundation of China (National Science Foundation of China)
ID : 21832001
Informations de copyright
© 2023. The Author(s).
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