Issue 28, 2011

Electrochemistry-controlled metal ion release from silicone elastomer nanocomposites through combination of different metal nanoparticles

Abstract

Electrochemistry-controlled metal ion release is achieved using nanoparticle mixtures embedded into a silicone matrix. Synergistic metal ion release from silicone matrix filled with silver and copper nanoparticles as well as silver and gold nanoparticles embedded into silicone is investigated in terms of qualitative and quantitative influences. Results are compared to nanoparticle composites with only one metal. The mechanism enhancing the release of the less noble metal nanoparticle is based on the ion-mediated electrochemistry rather than on contact corrosion of both elements. A retardation as well as an enhancement of metal ion release is observed allowing a time- and rate-controlled design of bioactive nanocomposites.

Graphical abstract: Electrochemistry-controlled metal ion release from silicone elastomer nanocomposites through combination of different metal nanoparticles

Supplementary files

Article information

Article type
Paper
Submitted
21 Dec 2010
Accepted
24 Feb 2011
First published
17 Mar 2011

J. Mater. Chem., 2011,21, 10287-10289

Electrochemistry-controlled metal ion release from silicone elastomer nanocomposites through combination of different metal nanoparticles

A. Hahn, S. Günther, P. Wagener and S. Barcikowski, J. Mater. Chem., 2011, 21, 10287 DOI: 10.1039/C0JM04480F

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