Shell-isolated nanoparticle enhanced Raman spectroscopy (SHINERS) investigation of benzotriazole film formation on Cu(100), Cu(111), and Cu(poly)

Nicole R. Honesty, Andrew A. Gewirth

Research output: Contribution to journalArticlepeer-review

Abstract

Benzotriazole (BTAH) is well known as an effective corrosion inhibitor for Cu because of its ability to make a coordination polymer film on the surface that provides a barrier to Cu oxidation. BTA - film formation was investigated on single-crystal and polycrystalline Cu surfaces with shell-isolated nanoparticle enhanced Raman spectroscopy (SHINERS) using silica-encapsulated Au nanoparticles. Potential-dependent spectra display reversible film formation on polycrystalline Cu and irreversible film formation on single-crystal Cu. Grain boundaries leading to smaller BTA --Cu oligomers are proposed to be the reason for cathodic degradation of the BTA - polymeric films on polycrystalline Cu.

Original languageEnglish (US)
Pages (from-to)46-50
Number of pages5
JournalJournal of Raman Spectroscopy
Volume43
Issue number1
DOIs
StatePublished - Jan 1 2012

Keywords

  • benzotriazole
  • copper
  • SERS
  • SHINERS

ASJC Scopus subject areas

  • Spectroscopy
  • Materials Science(all)

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