TY - JOUR
T1 - Screening effects in surface infrared spectra of CO adsorbed on electrodes
T2 - Application to isothermal desorption measurements
AU - Korzeniewski, C.
AU - Huang, J.
N1 - Funding Information:
We thank Professor Mark Severson (Oakland University) for providing guidance with the simulations and Professor M.J. Weaver (Purdue University) for making references [30] and [53] available in advance of publication. We are grateful to the Office of Naval Research for support of this work.
PY - 1999/10/4
Y1 - 1999/10/4
N2 - Infrared spectra of CO adsorbed on platinum electrodes were examined for effects of dielectric screening. Screening of the incident infrared radiation field by the adlayer polarization typically results in non-linear relationships between adsorbed CO vibrational band intensities and CO surface coverages. It is shown that the solvent in the electrochemical environment can reduce the strong Beer's law deviations observed for adsorbed CO in vacuum by maintaining the adlayer polarizability more constant with changes in CO surface coverage. The screening analysis was applied to correct adsorbed CO infrared peak absorbances in measurements of rate constants for CO desorption from electrodes. Copyright (C) 1999 Elsevier Science B.V.
AB - Infrared spectra of CO adsorbed on platinum electrodes were examined for effects of dielectric screening. Screening of the incident infrared radiation field by the adlayer polarization typically results in non-linear relationships between adsorbed CO vibrational band intensities and CO surface coverages. It is shown that the solvent in the electrochemical environment can reduce the strong Beer's law deviations observed for adsorbed CO in vacuum by maintaining the adlayer polarizability more constant with changes in CO surface coverage. The screening analysis was applied to correct adsorbed CO infrared peak absorbances in measurements of rate constants for CO desorption from electrodes. Copyright (C) 1999 Elsevier Science B.V.
KW - Adlayer polarization
KW - Chemisorption
KW - Dielectric screening in infra red spectra
KW - Isothermal desorption measurements
UR - http://www.scopus.com/inward/record.url?scp=0032875688&partnerID=8YFLogxK
U2 - 10.1016/S0003-2670(99)00391-8
DO - 10.1016/S0003-2670(99)00391-8
M3 - Article
AN - SCOPUS:0032875688
SN - 0003-2670
VL - 397
SP - 53
EP - 59
JO - Analytica Chimica Acta
JF - Analytica Chimica Acta
IS - 1-3
ER -