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Static field effect on the band intensity of adsorbed sulfate ions

✍ Scribed by F.C. Nart; T. Iwasita

Publisher: Elsevier Science
Year: 1996
Tongue: English
Weight: 590 KB
Volume: 41
Category: Article
ISSN: 0013-4686
DOI: 10.1016/0013-4686(95)00350-9

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✦ Synopsis

The effect of the static electric field at the electrochemical interface on the band intensity for the symmetric S-G stretch of adsorbed sulfate ions on polycrystalline platinum electrodes is analyzed. A quadratic dependence of the band intensity on the static electric field is found. A model based on the field induced change of the dynamic dipole moment furnishes data on the dynamic dipole moment and the dynamic polarizability of adsorbed SO:-. The measured (a#'/aQJ is 89.5esu g-"2, and (aa/aQ& is a function of coverage, ranging between 7.9 x 10e4 and 11.6 x 10-4cm2 g-"2.

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