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A simple, microwave-assisted route for producing Au/Ag concentred sols by glucose reduction in water was developed. Ag-Au bimetallic nanoparticles stabilized by polyvinylpyrrolidone (PVP) were characterized and their catalytic activity was studied in the reduction of 4-nitrophenol (4-NP) with NaBH4. Moreover they were tested as red ceramic inks for ink-jet printing technology. Since the research was developed in collaboration with a company interested in the large scale production of the suspensions, some fundamental properties for an industrial scale up were developed: high metal concentration, long time stability. The Au-Ag core-shell structures were prepared by a two-step process. Particle size-control and colloidal stability were achieved thanks to the accurate reaction optimization, combined with microwave heating, that allows the intensification of process even on large scale production. Prepared Au, Ag …
Publication date: 
1 Jan 2010

M Blosi, S Albonetti, F Gatti, M Dondi, A Migliori, L Ortolani, V Morandi, G Baldi, Ag Au

Biblio References: 
Volume: 1 Pages: 352-355