Coadsorption of perchlorate and bisulfate ions with Tl adatoms on Pt(111): A SNIFTERS study

Journal Article · Thu Dec 07 00:00:00 EST 1995 · Journal of Physical Chemistry

OSTI ID:171451

Marinkovic, N S; Fawsett, W R ^[1]; Wang, J X; Adzic, R R ^[2]

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1. Univ. of California, Davis, CA (United States)
2. Brookhaven National Lab., Upton, NY (United States)

In situ reflection infrared spectroscopy with electrochemical modulation has been used to investigate the coadsorption of anions for the system Tl{sub ads}/Pt(111) in dilute sulfuric and perchloric acids. For the first time evidence of coadsorption of perchlorate induced by underpotentially deposited Tl atoms is reported. The spectroscopic data show that the platinum surface is covered by Tl adatoms and by perchlorate or bisulfate from E = 0.4 V up to the onset of the Tl stripping peak. The possible structures of the Tl-ClO{sub 4} and Tl-HSO{sub 4} adlayers at Pt(111) are discussed. 20 refs., 4 figs.

• Research Organization: Brookhaven National Lab. (BNL), Upton, NY (United States)
• DOE Contract Number: AC02-76CH00016
• OSTI ID: 171451
• Journal Information: Journal of Physical Chemistry, Vol. 99, Issue 49; Other Information: PBD: 7 Dec 1995
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
40 CHEMISTRY
THALLIUM
ADSORPTION
ELECTRODEPOSITION
INFRARED SPECTRA
PERCHLORATES
ACID SULFATES
PLATINUM
SURFACES
VOLTAMETRY
ELECTRIC POTENTIAL
THIN FILMS