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

Sarah Wieghold, Lea Nienhaus, Armin Siebel, Maximilian Krause, Patricia Wand, Martin Gruebele, Ueli Heiz, Friedrich Esch

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


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.
Original languageEnglish (US)
Pages (from-to)439-444
Number of pages6
JournalMRS Advances
Issue number8
StatePublished - Jan 23 2017
Externally publishedYes

Bibliographical note

KAUST Repository Item: Exported on 2022-07-01
Acknowledgements: This work was supported by the Nanosystems Initiative Munich (NIM) (S.W. and U.H.) and the DFG projects HE3454/18-1 and -2, HE3454/23-1 (U.H.), respectively ES349/1-1 and -2 (F.E.). Research at Illinois was supported by a grant from the National Science Foundation, NSF CHE 1307002 (L.N., M.G.). The authors thank Florian F. Schweinberger for assistance with sample preparation and Dalaver H. Anjum from the ‘Advanced Nanofabrication Imaging and Characterization’ lab at King Abdullah University of Science and Technology (KAUST) for his help in acquiring the STEM micrographs.
This publication acknowledges KAUST support, but has no KAUST affiliated authors.


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