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Oxide layers developed on copper electrodes in Cu(II) solutions containing ligands

“…As factor becomes lower, the rate of oxide formation becomes higher. The effect of temperature is also significant but it is usual and displays no peculiarities [11].…”

“…The thermodynamic stability of Cu 2 O in the systems under discussion has been analysed and the respective diagrams have been constructed [8,9]. Less attention was focussed on the kinetics of oxide formation, except, maybe, for the ethylenediamine system [9][10][11].…”

Anodic Copper Oxidation in Alkaline Mediums with α-Alanine and Asparagine Acid Additives

“…The obtained results have shown that in alkaline background solutions the anodic polarization curves have a complicated shape characteristic for passive metals (Fig.1), and the products, which are responsible for metal passive state are the following: Cu 2 O, CuO, Cu(OH) 2 (2,9). The addition of both aminoacids doesn't change passive state nature, comparing with background solutions.…”

“…In connection with the possibility of using the aminoacids (AA) as complexing additives for solving different problems of applied electrochemistry (1)(2)(3)(4) it was carried out the cycle of investigations to discover the role of one of the most applicable monoaminocarbon acids -α-Ala and Asp -as an example of dibasic aminoacid, which has higher complexing and adsorption properties at copper electrochemical process, where copper is in active or in passive state, or undergoes local activation (LA) (5)(6)(7)(8). The analysis of experimental data has shown not simple influence of investigated aminoacids on copper anodic oxidation regularities, especially sharply revealing at metal local surface destruction conditions and significantly depending on concentration of aminoacid, anion composition and solution pH.…”

The Nature and Thiknesses of Passive Films on Interface Cu/ NaOH+Alanine

“…Amino acids are widely used as complexing agents in various problems of applied electrochemistry and corrosion (1)(2)(3)(4)(5)(6)(7)(8). Earlier, we revealed some functions of alanine (a well-known amino acid in its α-and β-isomers), in electrochemical processes on copper in its active, passive, or locally activated (LA) state (9)(10)(11)(12).…”