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Structure and Optical Properties of Silica-Supported Ag-Au Nanoparticles (Articolo in rivista)

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Structure and Optical Properties of Silica-Supported Ag-Au Nanoparticles (Articolo in rivista) (literal)

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D. Barreca, A. Gasparotto, C. Maragno, E. Tondello, S. Gialanella (2007)
Structure and Optical Properties of Silica-Supported Ag-Au Nanoparticles
in Journal of nanoscience and nanotechnology (Print)
(literal)

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1: ISTM-CNR and INSTM, Department of Chemical Sciences, Padova University, Via Marzolo, 1 - 35131 Padova, Italy 2,3,4: Department of Chemical Sciences, Padova University and INSTM, Via Marzolo, 1 - 35131 Padova, Italy 5: Department of Materials Engineering and Industrial Technologies, Trento University, Via Mesiano, 77 - 38050 Trento, Italy (literal)

Titolo

Structure and Optical Properties of Silica-Supported Ag-Au Nanoparticles (literal)

Abstract

Bimetallic Ag-Au nanoparticles are synthesized by sequential deposition of Au and Ag on amorphous silica by Radio Frequency (RF)-sputtering under mild conditions. Specimens are thoroughly characterized by a multi-technique approach, aimed at investigating the system properties as a function of the Ag/Au content, as well as the evolution induced by ex-situ annealing under inert (N2) or reducing (4% H2/N2) atmospheres. The obtained results demonstrate the possibility to obtain Ag-Au alloyed nanoparticles with controllable size, shape, structure and dispersion under mild conditions, so that the optical properties can be finely tuned as a function of the synthesis and thermal treatment conditions. (literal)

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