Accession Number:

ADA251726

Title:

The Role of Interfacial Potential in Adsorbate Bonding: Electrode Potential-Dependent Infrared Spectra for Saturated CO Adlayers on Pt(110) and Related Electrochemical Surfaces in Varying Solvent Environments

Descriptive Note:

Technical rept.

Corporate Author:

PURDUE UNIV LAFAYETTE IN DEPT OF CHEMISTRY

Personal Author(s):

Report Date:

1992-05-01

Pagination or Media Count:

40.0

Abstract:

The surface potential, together with the accompanying electrostatic fields, have long been recognized by electrochemists as playing a central role in the properties of adsorbates at metal-solution interfaces. This appreciation has arisen in large part through the ease by which the surface potential in electrochemical systems as controlled by the electrode potential can be varied by external means. Similar potential-induced effects can be anticipated to also play a role in adsorbate properties at metal-ultrahigh vacuum uhv interfaces, especially in the presence of dipolar or ionizable coadsorbates. The recognition as well as understanding of such effects in the latter case, however, has been hampered somewhat by the more limited control of the surface potential attainable in uhv systems, together with the relative paucity of the required work-function data. Even so, some intriguing information on potential-induced effects upon the thermodynamic and spectroscopic adsorbate properties in uhv environments has been obtained by dosing components of electrochemical interfaces at metal-uhv surfaces.

Subject Categories:

  • Physical Chemistry

Distribution Statement:

APPROVED FOR PUBLIC RELEASE