Anodic oxidation processes of copper with a mercury electrode in the presence of hydrogen peroxide and in unbuffered sodium chloride solutions

✍ Scribed by Damir Krznarić

• Publisher: Elsevier Science
• Year: 1994
• Tongue: English
• Weight: 856 KB
• Volume: 293
• Category: Article
• ISSN: 0003-2670
• DOI: 10.1016/0003-2670(94)00076-x

✦ Synopsis

The oxidation processes of copper with a mercury electrode were investigated in the presence of H,O, and in unbuffered NaCl solutions. The method used was anodic stripping alternating current voltammetry. Owing to the electrocatalytic process of Cu and H,O,, the local pH around the electrode increases, resulting in copper(I) oxide formation. It was determined that the anodic peak current relating to Cu,O deposition on the electrode surface is directly proportional to H,O, concentration. The product of the Cuz+ and H,O, concentrations in solution at which the CuzO deposit on the electrode surface first appears is constant. These results suggest the possibility of the determination of H,O, or dissolved oxygen in similar systems. The possible structural changes and oxidation processes of the Cu,O film are discussed.