Mechanistic Study of Shape-Anisotropic Nanomaterials Synthesized via Spontaneous Galvanic Displacement

Kenneth Neyerlin, Bryan Pivovar, Jeremy Leong, Brian Larsen, Matthew Strand, Christopher Tassone, Brian Gorman, David Diercks, Svitlana Pylypenko, Ryan Richards

Research output: Contribution to journalArticlepeer-review

5 Scopus Citations


Among the broad portfolio of preparations for nanoscale materials, spontaneous galvanic displacement (SGD) is emerging as an important technology because it is capable of creating functional nanomaterials that cannot be obtained through other routes and may be used to thrift precious metals used in a broad range of applications including catalysis. With advances resulting from increased understanding of the SGD process, materials that significantly improve efficiency and potentially enable widespread adoption of next generation technologies can be synthesized. In this work, PtAg nanotubes synthesized via displacement of Ag nanowires by Pt were used as a model system to elucidate the fundamental mechanisms of SGD. Characterization by X-ray diffraction (XRD), small-angle X-ray scattering (SAXS), and atom probe tomography (APT) indicates nanotubes are formed as Ag is oxidized first from the surface and then from the center of the nanowire, with Pt deposition forming a rough, heterogeneous surface on the PtAg nanotube.

Original languageAmerican English
Pages (from-to)25053-25060
Number of pages8
JournalJournal of Physical Chemistry C
Issue number43
StatePublished - Nov 2016

Bibliographical note

Publisher Copyright:
© 2016 American Chemical Society.

NREL Publication Number

  • NREL/JA-5900-67712


  • nanotubes
  • spontaneous galvanic displacement
  • synthesis


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