Comparison of the potential dependence of the surface-enhanced raman effect at colloid silver particles and bulk silver electrodes

Abstract

The potential dependence of surface-enhanccd Raman signals from pyridine adsorbed onto silver sol particles is identical to that from pyridine adsorbed on flat silver electrodes. Variation of the potential at the interface silver sol particle/electrolyte was achieved by adding the redox system europiums 3+/europium 2+ and varying the concentration ratio.