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14–17 Mar 2022
Europe/Berlin timezone

Enhanced electrochemical dissolution of Ag nanoparticles in the presence of Pt nanoparticles

17 Mar 2022, 10:20
20m
Talk Surfaces, Interfaces, Thin Films, Nanoparticles Nanoparticles and Interfaces

Speaker

Oleg Prymak (University of Duisburg-Essen)

Description

Spherical PVP-coated Ag (10 nm) and Pt (3 nm) NPs were wet-chemically synthesized and mixed as aqueous dispersion with different mass ratios of Ag:Pt. It was shown that the dissolution of Ag NPs was strongly enhanced by the presence of Pt NPs in chloride-containing aqueous dispersion. This behavior was confirmed by PXRD and TEM (Fig. 1). At the same time, only a slow dissolution of Ag NPs in presence of Pt NPs was detected in water or ammonium acetate or phosphate-buffered saline solutions.

Primary authors

Oleg Prymak (University of Duisburg-Essen) Kateryna Loza (University of Duisburg-Essen) Oliver Wetzel (University of Duisburg-Essen) Marc Heggen (Forschungszentrum Jülich) Marina Breisch (Ruhr University Bochum) Prof. Manfred Köller (Ruhr University Bochum) Christina Sengstock (Ruhr University Bochum) Prof. Matthias Epple (University of Duisburg-Essen)

Presentation materials