Communication

Stabilized Nanoporous Metals by Dealloying Ternary Alloy Precursors†

  1. Josh Snyder1,2,
  2. Piyapong Asanithi3,
  3. Alan B. Dalton3,
  4. Jonah Erlebacher1,2,*

Article first published online: 5 MAY 2008

DOI: 10.1002/adma.200702760

Issue

Advanced Materials

Advanced Materials

Volume 20, Issue 24, pages 4883–4886, December 17, 2008

Additional Information

How to Cite

Snyder, J., Asanithi, P., Dalton, A. B. and Erlebacher, J. (2008), Stabilized Nanoporous Metals by Dealloying Ternary Alloy Precursors. Adv. Mater., 20: 4883–4886. doi: 10.1002/adma.200702760

Author Information

  1. 1

    Department of Materials Science and Engineering, Johns Hopkins University, Baltimore, MD 21218 (USA)

  2. 2

    Department of Chemical and Biomolecular Engineering, Johns Hopkins University, Baltimore, MD 21218 (USA)

  3. 3

    Department of Physics and the Surrey Materials Institute, University of Surrey, Guildford, Surrey GU2 7XH (UK)

*Department of Materials Science and Engineering, Johns Hopkins University, Baltimore, MD 21218 (USA).

  1. †

    We gratefully acknowledge support for this work by the US Department of Energy, Office of Basic Energy Sciences under grant DE-FG02-05ER15727. We also are grateful to Lorenzo Manetti (Manetti Gold Leaf, Florence, Italy) for help in fabrication of AgAuPt alloy leaf.

Publication History

  1. Issue published online: 16 DEC 2008
  2. Article first published online: 5 MAY 2008
  3. Manuscript Revised: 14 DEC 2007
  4. Manuscript Received: 6 NOV 2007

Funded by

  • US Department of Energy, Office of Basic Energy Sciences. Grant Number: DE-FG02-05ER15727

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Keywords:

  • alloys;
  • gold;
  • metals;
  • nanoporous materials;
  • platinum
Thumbnail image of graphical abstract

A small percentage of platinum added to silver/gold alloys that are then electrochemically dealloyed yields an extremely high surface area nanoporous metal, with pore size less than 4 nm, as shown in the figure (scale bar = 5 nm). The presence of surface platinum stabilizes the nanostructure to coarsening in air and electrolyte.

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