Magnetic recoverable catalysts; assessment on CTAB-stabilized gold nanostructures

Ana B. Dávila-Ibáñez; Miguel A. Correa-Duarte; Veronica Salgueirino

doi:10.1039/B915177J

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Journal of Materials Chemistry

Issue 2, 2010

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Magnetic recoverable catalysts; assessment on CTAB-stabilized gold nanostructures

Ana B. Dávila-Ibáñez , Miguel A. Correa-Duarte and Veronica Salgueirino

J. Mater. Chem., 2010, 20, 326-330

DOI: 10.1039/B915177J
Received 27 Jul 2009, Accepted 01 Oct 2009
First published on the web 02 Nov 2009

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Abstract
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Highly active and magnetically recoverable colloidal catalysts were synthesized assembling iron oxide and platinum nanoparticles by means of mesoporous silica that upholds them as a core–shell structured system. Conveniently, these composites present multiple magnetic cores gaining special relevance in the catalyst’s recovery as responding to low magnetic fields. As a proof of concept, they were used to assess the retarded gold reduction in cetyltrimethylammonium bromide (CTAB) micelles, permitting to tune the gold reduction rate and therefore the production of spherical or anisotropic gold nanostructures.

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