Abstract
Bimetallic films prepared by vacuum-depositing platinum onto silver island films have been evaluated for surface-enhanced Raman scattering (SERS), using CN− as the adsorbate. For platinum overlayers with mean thickness corresponding to 1–2 monolayers the spectrum is dominated by a band consistent with either CN− adsorbed at the platinum surface or with Pt(CN)42−. For thinner platinum overlayers, changes in the spectra due to migration of CN− from Ag(CN)2− to the surface platinum atoms were observed during the first few minutes of laser illumination. Similar palladium-on-silver films showed a prominent SERS band assigned to surface Pd(CN)42−.
Original language | English |
---|---|
Pages (from-to) | 101-106 |
Journal | Chemical Physics Letters |
Volume | 303 |
Issue number | 1-2 |
DOIs | |
Publication status | Published - 1999 |