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Noble Metal Nanoislands Decoration of Au(111) and Pt(111) Single Crystal Surfaces

  • Svetlana Strbac
  • Andrzej Wieckowski
Chapter
Part of the Modern Aspects of Electrochemistry book series (MAOE, volume 48)

Abstract

Platinum single crystals decorated with noble metal nanoislands have found increasing applications as model systems for highly active fuel cell catalysis due to their enhanced electrocatalytic properties. Pt single crystals modified with Ru nanoislands were particularly explored due to the high catalytic efficiency of PtRu bimetallic electrodes with respect to the removal of CO poisoning during methanol oxidation. The precise geometry of the Ru-modified Pt single crystals, acquired by the use of both ex situ and in situ scanning tunneling microscopy (STM) techniques, enabled fundamental investigations of their activity from the structural perspective. Comprehensive in situ STM studies of Au single crystals decorated with Ru nanoislands were also undertaken in order to elucidate the catalytic behavior of ruthenium nanoislands, since the Au substrate alone was much less active towards CO adsorption or oxidation.

Keywords

Scanning Tunneling Microscopy Methanol Oxidation Saturation Coverage Nernst Potential Single Crystal Electrode 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgments

Svetlana Strbac acknowledges support by the Ministry of Science of the Republic of Serbia (project 06-141001). Andrzej Wieckowski acknowledges support by the National Science Foundation (grant NSF CHE06-51083).

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Copyright information

© Springer Science+Business Media, LLC 2010

Authors and Affiliations

  • Svetlana Strbac
    • 1
  • Andrzej Wieckowski
    • 2
  1. 1.ICTM-Institute of ElectrochemistryUniversity of BelgradeBelgradeSerbia
  2. 2.Department of ChemistryUniversity of Illinois at Urbana-ChampaignUrbanaUSA

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