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"In-situ" observation of halide ion adsorption on a gold electrode using synchrotron far infrared spectroscopy.

Journal Article · · J. Electroanal. Chem.

The adsorption of chloride and bromide ions on a gold electrode in the double layer region in 0.5 M perchloric acid solution was observed 'in-situ' for the first time using the technique of synchrotron far infrared reflectance spectroscopy (SFIRS). The Au-Cl surface vibrational frequency was measured to be about 263 cm{sup -1} in chloride concentrations from 0.005 to 0.05 M. The Au-Br stretching mode was observed at 182 cm{sup -1}. The SFIRS technique is a promising tool for the investigation of interfacial electrochemical structures and processes with monolayer sensitivity.

Research Organization:
Argonne National Laboratory (ANL)
DOE Contract Number:
AC02-06CH11357
OSTI ID:
942404
Report Number(s):
ANL/CMT/JA-31075
Journal Information:
J. Electroanal. Chem., Journal Name: J. Electroanal. Chem. Journal Issue: 2 ; Mar. 1999 Vol. 463; ISSN JEACAX; ISSN 0368-1874
Country of Publication:
United States
Language:
ENGLISH