✦ LIBER ✦
Electrochemical and ellipsometric data related to the formation of soluble silver (I) during the potentiodynamic polarization of polycrystalline silver in basic solutions
✍ Scribed by J. Zerbino; M. Lopez Teijelo; J.R. Vilche; A.J. Arvia
- Publisher
- Elsevier Science
- Year
- 1985
- Tongue
- English
- Weight
- 555 KB
- Volume
- 30
- Category
- Article
- ISSN
- 0013-4686
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✦ Synopsis
Soluble
Ag(I) species is formed in the early stages of voharnmetric silver electrooxidation in 0.1 hi NaOH and 0.1 M NaOH + 1 M NaClO, solutions at WC, as demonstrated by the rotating ring-disc technique. This result allows a reasonable interpretation of ellipsometric data obtained for the anodiition of silver under different vohammetric conditions. Correspondingly, two anodic layers of different optical constants are electroformed. The hydrous Ag(I) oxide layer behaves as a porous structure with an average thickness of about 2.5 times greater than that of the anhydrous oxide.