| Autor: |
Survila, Arvydas, Kanapeckaitė, Stasė, Girčienė, Olga, Gudavičiūtė, Laima |
| Zdroj: |
Journal of The Electrochemical Society; Jul2021, Vol. 168 Issue 7, p1-6, 6p |
| Abstrakt: |
Anodic voltammograms using rotating disc electrode (RDE) and linear sweep (LS) techniques were obtained for alkaline (9 < pH < 11.2) Cu (II)-glycine solutions. The nature and properties of the RDE anodic pseudo-limiting currents ilim and LS peak currents ip were considered within the framework of a theoretical model, taking into account the peculiarities of mass transfer of chemically interacting species. Both ilim and ip increase with solution pH and vary linearly with the concentration of glycinate anion l-. The degree of irreversibility of the process significantly affects the ip values, but has only small influence on ilim. Both characteristic current densities could serve as a measure of deprotonated ligand species, which is capable of forming stable Cu (II) complexes. The applications of modified equations, which were derived for ip in the case of simple redox systems, are discussed in detail. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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