Surface-enhanced raman scattering of pyridine using different metals: Differences and explanation based on the selective formation of α-pyridyl on metal surfaces

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80 Scopus citations

Abstract

A simple method has been developed to produce SERS-active metal surfaces. Six metal surfaces (cadmium, nickel, gold, iron, copper, and silver) have been prepared on an aluminum foil underlayment by chemical reduction and strong surface-enhanced Raman signals have been observed for pyridine species on these surfaces. This permits the direct comparison of pyridine spectra on different metal surfaces prepared by the same chemically clean method. The differences among the SER spectra of the aqueous pyridine species using different metals generally follow the trend of silver, cadmium, nickel, iron, gold, and copper, which can be explained by the selective formation of α-pyridyl species and the equilibria between end-on adsorbed pyridines and edge-on adsorbed a-pyridyl species on the different metal surfaces.

Original languageEnglish (US)
Pages (from-to)1788-1793
Number of pages6
JournalJournal of Physical Chemistry B
Volume109
Issue number5
DOIs
StatePublished - Feb 10 2005
Externally publishedYes

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films
  • Materials Chemistry

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