Exploring AuRh nanoalloys: a computational perspective on the formation and physical properties
Articolo
Data di Pubblicazione:
2022
Citazione:
Exploring AuRh nanoalloys: a computational perspective on the formation and physical properties / M. Vanzan, R.M. Jones, S. Corni, R. D'Agosta, F. Baletto. - In: CHEMPHYSCHEM. - ISSN 1439-4235. - 23:8(2022 Apr 20), pp. e202200035.1-e202200035.12. [10.1002/cphc.202200035]
Abstract:
: We studied the formation of AuRh nanoalloys (between 20-150 atoms) in the gas phase by means of Molecular Dynamics (MD) calculations, exploring three possible formation processes: one-by-one growth, coalescence, and nanodroplets annealing. As a general trend, we recover a predominance of Rh@Au core-shell ordering over other chemical configurations. We identify new structural motifs with enhanced thermal stabilities. The physical features of those selected systems were studied at the Density Functional Theory (DFT) level, revealing profound correlations between the nanoalloys morphology and properties. Surprisingly, the arrangement of the inner Rh core seems to play a dominant role on nanoclusters' physical features like the HOMO-LUMO gap and magnetic moment. Strong charge separations are recovered within the nanoalloys suggesting the existence of charge-transfer transitions.
Tipologia IRIS:
01 - Articolo su periodico
Keywords:
AuRh; density functional calculations; multiscale modelling; nanoalloys; nanoclusters; synthesis
Elenco autori:
M. Vanzan, R.M. Jones, S. Corni, R. D'Agosta, F. Baletto
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