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Selective knockout of gold active sites

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journal contribution
posted on 08.04.2010 by Anna Maria Nowicka, Ulrich Hasse, Gustav Sievers, Mikolaj Donten, Zbigniew Stojek, Stephen Fletcher, Fritz Scholz
It has long been known that defects on a gold surface play an important role in electrocatalysis, but the precise mechanism has always been unclear. This work indicates that the defect sites provide partially filled d-orbitals that stabilize freeradical intermediates. Strong evidence for this hypothesis is that the sites can be selectively knocked out by treatment with OH• radicals generated by Fenton's reagent. The knockout effect is demonstrated using oxygen reduction, hydrogen reduction, and the redox electrochemistry of hydroquinone.

History

School

  • Science

Department

  • Chemistry

Citation

NOWICKA, A.M. ... et al, 2010. Selective knockout of gold active sites. Angewandte Chemie International Edition, 49 (17), pp.3006-3009.

Publisher

© Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim

Version

AM (Accepted Manuscript)

Publication date

2010

Notes

This is the final manuscript version, made available by kind permission of Wiley-VCH Verlag GmbH & Co. KGaA. The definitive version is available at: http://doi.wiley.com/10.1002/anie.201000485

ISSN

1433-7851

Language

en

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