Bulletin of the Korean Chemical Society

Korean Chemical Society (대한화학회)
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Formation of Soluble Intermediate During the Electrochemical Crystallization of Lead Dioxide

  • Hwang, Eui-Jin (Department of Chemistry, Seoul National University) ;
  • Kim, Ha-Suck (Department of Chemistry, Seoul National University)
  • Published : 1994.05.20
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Abstract

Details on the electrochemical formation of lead dioxide from aqueous plumbous ion are studied by measuring current-time behavior with potential step method at a rotating platinum electrode. A cubic law without induction period can be applied to the crystallization of lead dioxide in both acetate and nitrate media. In the course of the mechanistic study, the presence of a soluble intermediate during the nucleation step is clearly observed with a rotating ring-disk electrode. Decrease in the anodic ring current due to the reduction of soluble species formed during the anodic crystallization of lead dioxide at disk is detected.

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