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Chemistry and Technology of Fuels and Oils

, Volume 48, Issue 4, pp 321–330 | Cite as

Cyclic voltammetry study of passivation of tin in sodium dihydrogen phosphate solution

  • N. A. Al-Mobarak
Article

Cyclic voltammetry is used to investigate the behavior of tin in a 0.1 M Na2H2PO4 (sodium dihydrogen phosphate) solution at pH 5.2. Voltammograms are obtained for different final anodic and cathodic potentials, numbers of cycles, and scan rates. H2PO4 ions are observed to have a specific effect at the beginning of the anodic process. A mixture of tin dioxides, Sn(OH)2 and Sn(OH)4, forms on the electrode surface in the tin dissolution stage, then converting to a mixture of more stable hydrous tin(II) and tin(IV) oxides. A passivating film forms from a mixture of tin(IV) compounds with varying electrochemical stabilities.

Key words

tin cyclic voltammetry sodium dihydrogen phosphate passive state 

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Copyright information

© Springer Science+Business Media, Inc. 2012

Authors and Affiliations

  • N. A. Al-Mobarak
    • 1
  1. 1.RiyadhSaudi Arabia

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