7. X-Ray Studies of Strained Catalytic Dealloyed Pt Surfaces

  1. Richard C. Alkire2,
  2. Dieter M. Kolb3,
  3. Ludwig A. Kibler3 and
  4. Jacek Lipkowski4
  1. Peter Strasser

Published Online: 28 MAR 2014

DOI: 10.1002/9783527680436.ch7

Electrocatalysis, Volume 14

Electrocatalysis, Volume 14

How to Cite

Strasser, P. (2013) X-Ray Studies of Strained Catalytic Dealloyed Pt Surfaces, in Electrocatalysis, Volume 14 (eds R. C. Alkire, D. M. Kolb, L. A. Kibler and J. Lipkowski), Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim, Germany. doi: 10.1002/9783527680436.ch7

Editor Information

  1. 2

    Department of Chemical and Biomolecular Engineering, University of Illinois, Urbana, IL 61801, United States

  2. 3

    Institute of Electrochemistry, University of Ulm, Albert-Einstein-Allee 47, 89081 Ulm, Germany

  3. 4

    Department of Chemistry, University of Guelph, N1G 2W1 Guelph, Ontario, Canada

Author Information

  1. Technical University Berlin, Department of Chemistry, Chemical Engineering Division, Strasse des 17. juni 124, 10623 Berlin, Germany

Publication History

  1. Published Online: 28 MAR 2014
  2. Published Print: 4 DEC 2013

ISBN Information

Print ISBN: 9783527332274

Online ISBN: 9783527680436

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Keywords:

  • dealloyed bimetallic surfaces;
  • dealloyed strained alloy nanoparticles;
  • dealloyed strained Pt core-shell model surfaces;
  • polycrystalline thin film surfaces;
  • single crystal surfaces;
  • strained catalytic dealloyed Pt surfaces;
  • X-ray studies

Summary

This chapter reviews recent insights into the geometric bulk and surface structure of strained dealloyed bimetallic Pt catalysts. It addresses studies on single crystals, polycrystalline thin films, and alloy nanoparticles, highlighting unifying concepts and important differences of dealloyed Pt surfaces of varying length scales. Dealloying is a selective chemical or electrochemical leaching process where the less-noble component of a metal alloy is selectively removed from the surface of a bimetallic alloy. To complement the catalytic activity-surface lattice strain studies on single crystals and polycrystalline thin films, X-ray techniques have been applied to dealloyed bimetallic Pt nanoparticles to evaluate surface lattice strain as a function of synthesis conditions and dealloying conditions. Thanks to the advanced electron characterization techniques, such as aberration-corrected electron microscopy and spectroscopy, real space images of complex core- shell fine structures of dealloyed nanoparticles can today be investigated at the atomic scale.