A Study of Anodic Process of Copper in NaOH Solution

Abstract

Abstract: The anodic process of copper in concentrated NaOHsolutions was studied by potential slow scan and galvanostatic methods,and angle dependent X-ray photoelectron spectroscopy analysis.The result shows the second passive film on copper surface is made up of an inner Cu₂Olayer followed by a CuO-Cu(OH)₂ layer,and CuO/Cu(OH)₂ ratio decreases with the probed depth decreasing,whereas adsorbed water increasing.An electrochemical oxidation-surface transition model about the passivating film formation has been proposed.

Key words: Copper, Electrochemical oxidation, Passive film, XPS

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HE Jian-Bo, LIN Jian-Xin. A Study of Anodic Process of Copper in NaOH Solution[J]. Chem. J. Chinese Universities, 1996, 17(2): 290.

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A Study of Anodic Process of Copper in NaOH Solution

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