This work focuses on the growth of nanometre-sized Ag clusters in solution. Molecular dynamics simulations have been employed to gain the necessary detail on the dynamics of solute species and to study the mechanistic features of the processes governing the association of solute atoms in aggregates. Supersaturated liquid solutions of Ag in tetrachloromethane have been considered. A systematic variation of the concentration of Ag atoms in solution permitted us to show the different mechanistic scenarios responsible for the growth processes of solid Ag clusters. It is shown that such processes are limited by the thermal diffusion of solute in the solution bulk at relatively low supersaturation degrees, whereas the growth is limited by interfacial effects at relatively high supersaturation degrees.

Growth of Ag nanometre-sized particles in solution: molecular dynamics simulations / Delogu, F; Arca, E; Mulas, Gabriele Raimondo Celestino Ettore. - In: NANOTECHNOLOGY. - ISSN 0957-4484. - 19:29(2008), p. 295703. [10.1088/0957-4484/19/29/295703]

Growth of Ag nanometre-sized particles in solution: molecular dynamics simulations

MULAS, Gabriele Raimondo Celestino Ettore
2008-01-01

Abstract

This work focuses on the growth of nanometre-sized Ag clusters in solution. Molecular dynamics simulations have been employed to gain the necessary detail on the dynamics of solute species and to study the mechanistic features of the processes governing the association of solute atoms in aggregates. Supersaturated liquid solutions of Ag in tetrachloromethane have been considered. A systematic variation of the concentration of Ag atoms in solution permitted us to show the different mechanistic scenarios responsible for the growth processes of solid Ag clusters. It is shown that such processes are limited by the thermal diffusion of solute in the solution bulk at relatively low supersaturation degrees, whereas the growth is limited by interfacial effects at relatively high supersaturation degrees.
2008
Growth of Ag nanometre-sized particles in solution: molecular dynamics simulations / Delogu, F; Arca, E; Mulas, Gabriele Raimondo Celestino Ettore. - In: NANOTECHNOLOGY. - ISSN 0957-4484. - 19:29(2008), p. 295703. [10.1088/0957-4484/19/29/295703]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11388/62251
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