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Sulfate adsorption on well-defined Pt(100) electrodes

✍ Scribed by Francisco C. Nart; Teresa Iwasita; Martin Weber

Publisher
Elsevier Science
Year
1994
Tongue
English
Weight
265 KB
Volume
39
Category
Article
ISSN
0013-4686

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✦ Synopsis

The metal-solution interface of a single-crystal Pt(100) electrode in the presence of specifically adsorbed sulfate ions is investigated by means of in situ FTIR spectroscopy. Sulfate adsorption starts at about 0.2V vs. Pd/H 2 and goes through a maximum at ca. 0.5V. Sulfate ions are adsorbed through two oxygen atoms presenting a C2v symmetry. The two strong bands observed at around 1100 and 1200cm-1 are assigned to the symmetric S-O stretches of the resulting SO 2 groups (coordinated and noncoordinated (respectively).

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