Effect of residual silver on surface-enhanced raman scattering of dealloyed nanoporous gold

Ling Zhang, Luyang Chen, Hongwen Liu, Ying Hou, Akihiko Hirata, Takeshi Fujita, Mingwei Chen

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Nanoporous gold films containing various amounts of residual silver have been synthesized by controllable dealloying and subsequent annealing for surface-enhanced Raman scattering (SERS). It was found that the residual Ag plays an important role in the SERS effect of dealloyed nanoporous gold. More residual Ag gives rise to better SERS effects when nanopore sizes are nearly identical. Moreover, homogenization of the residual silver by annealing can further improve the SERS enhancement of nanoporous Au-Ag alloys.

Original languageEnglish
Pages (from-to)19583-19587
Number of pages5
JournalJournal of Physical Chemistry C
Issue number40
Publication statusPublished - 2011 Oct 13


ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Energy(all)
  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films

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