UHV electron spectroscopic studies of surface processes occurring in an electrochemical cell

COLL 59

Andrzej Wieckowski1, Carolina Vericat1, Christina Johnston1, Mitsuru Wakisaka1, and Hoydoo You2. (1) Department of Chemistry, University of Illinois at Urbana-Champaign, 600 South Mathews Avenue, Urbana, IL 61801, (2) Materials Science Division, Argonne National Laboratory, 9700 S. Cass Ave., Argonne, IL 60563
Professor Adamson was a strong ally of the combination between UHV surface science and interfacial electrochemistry. In fact, this was Art Adamson and Art Hubbard of UCSB who put together Langmuir, the interfacial journal of ACS, with the strong desire to expose the UHV link with force. In my presentation, in honor of Professor Art Adamson's contribution to science, the current status of UHV-electrochemistry science will be reviewed. Special emphasis will be given to our work on spontaneously deposited osmium on Pt(111) electrodes studied by x-ray photoemission spectroscopy (XPS) and in-situ grazing incidence fluorescence x-ray absorption spectroscopy (GIF-XAS). A perfect convergence of the in situ and ex situ data, the former including STM imaging of the electrode surfaces, is one of the main research outcomes of this project.