Issue 4, 2024

Structural and electronic changes in the Ni13@Ag42 nanoparticle under surface oxidation: the role of silver coating

Abstract

Icosahedral Ni13@Ag42 is a stable nanoparticle formed by a magnetic nickel core surrounded by a silver coating that provides physical protection to the 3d metal cluster as well as antibacterial properties. In this work, we report density functional theoretical calculations to delve into a comprehensive analysis of how surface oxidation impacts the structural, electronic, magnetic, and reactivity properties of this interesting nanoparticle. To elucidate the role played by the silver coating, we compare the results with those found for the bare Ni13 cluster also subjected to surface oxidation. When Ni13 is covered by silver, we find a markedly robust behavior of the magnetic moment of the resulting nanoparticle, which remains nearly constant upon oxidation up to the rates explored, and the same holds for its overall reactivity. The obtained trends are rationalized in terms of the complex interplay between Ni–Ag and Ag–O interactions which impact the relative inter-atomic distances, charge transfer effects, spin polarization and magnetic couplings.

Graphical abstract: Structural and electronic changes in the Ni13@Ag42 nanoparticle under surface oxidation: the role of silver coating

Supplementary files

Article information

Article type
Paper
Submitted
17 Dit 2023
Accepted
05 Kax 2023
First published
19 Kax 2023

Phys. Chem. Chem. Phys., 2024,26, 3117-3125

Structural and electronic changes in the Ni13@Ag42 nanoparticle under surface oxidation: the role of silver coating

R. H. Aguilera-del-Toro, F. Aguilera-Granja and A. Vega, Phys. Chem. Chem. Phys., 2024, 26, 3117 DOI: 10.1039/D3CP05043B

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