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Au(111)-supported Platinum Nanoparticles: Ripening and Activity

Published online by Cambridge University Press:  23 January 2017

Sarah Wieghold ,
Lea Nienhaus ,
Armin Siebel ,
Maximilian Krause ,
Patricia Wand ,
Martin Gruebele ,
Ueli Heiz  and
Friedrich Esch
Sarah Wieghold
Affiliation:
Chair of Physical Chemistry, Department of Chemistry and Catalysis Research Center, Technische Universität München, Lichtenbergstraße 4, D-85747 Garching, Germany
Lea Nienhaus
Affiliation:
Beckman Institute for Advanced Science and Technology and Department of Chemistry, University of Illinois, Urbana, IL 61801, U.S.A.
Armin Siebel
Affiliation:
Chair of Electrochemistry, Department of Chemistry and Catalysis Research Center, Technische Universität München, Lichtenbergstraße 4, D-85747 Garching, Germany
Maximilian Krause
Affiliation:
Chair of Physical Chemistry, Department of Chemistry and Catalysis Research Center, Technische Universität München, Lichtenbergstraße 4, D-85747 Garching, Germany
Patricia Wand
Affiliation:
Chair of Physical Chemistry, Department of Chemistry and Catalysis Research Center, Technische Universität München, Lichtenbergstraße 4, D-85747 Garching, Germany
Martin Gruebele
Affiliation:
Beckman Institute for Advanced Science and Technology and Department of Chemistry, University of Illinois, Urbana, IL 61801, U.S.A. Department of Physics, University of Illinois, Urbana, IL 61801, U.S.A.
Ueli Heiz
Affiliation:
Chair of Physical Chemistry, Department of Chemistry and Catalysis Research Center, Technische Universität München, Lichtenbergstraße 4, D-85747 Garching, Germany
Friedrich Esch*
Affiliation:
Chair of Physical Chemistry, Department of Chemistry and Catalysis Research Center, Technische Universität München, Lichtenbergstraße 4, D-85747 Garching, Germany
*
*(Email: [email protected])
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Abstract

The recent spotlight on supported nanoparticles (NPs) has attracted attention in the field of catalysis and fuel cell technology. Supported NPs can be used as model catalysts to gain a fundamental understanding of the catalytic properties at the interface. Here, especially the wet-chemical preparation of platinum NPs in alkaline ethylene glycol is a powerful approach to synthesize stable particles with a narrow size distribution in the nanometer regime. We combine high resolution imaging by scanning tunneling microscopy with electrochemical characterization by cyclic voltammetry to gain insights into the underlying degradation mechanism of supported platinum NPs, paving the way toward a rational design of supported catalysts with controlled activity and stability.

Keywords

scanning tunneling microscopy (STM)catalyticnanostructure
Type
Articles
Information
MRS Advances , Volume 2 , Issue 8: Electrochemistry , 2017 , pp. 439 - 444
Copyright
Copyright © Materials Research Society 2017 

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References

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