UV-VIS identification of copper complexes with inhibitor organic components in the electrolyte
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Date
2025
Authors
Zdravković, Milica
Grekulović, Vesna
Huseinović, Edina
Vianello, Robert
Štrbac, Nada
Huremovic, Melita
Gorgievski, Milan
Journal Title
Journal ISSN
Volume Title
Publisher
University of Belgrade, Technical Faculty in Bor
Source
Proceedings - XVI International Mineral Processing and Recycling Conference, IMPRC, 28 – 30 May 2025, Belgrade, Serbia
Volume
Issue
Abstract
The UV-VIS method is an effective, non-destructive method that enables a better understanding of the electrolyte during corrosion. The aim of the study presented in this paper is to determine the existence of an organometallic complex in a 0.5 M NaCl solution with the addition of Rubus fruticosus L. leaf extract (RFLE). The experiments were conducted in a 0.5 M NaCl solution with the addition of RFLE (5 g/L and 10 g/L) with and without the immersion of a copper coupon. The results show that after the copper coupon standing in the electrolyte, there is a change in the absorbance maximum in the solution with 5 g/L RFLE, while no change is observed in the solution with 10 g/L RFLE. Such a change indicates the existence of a copper-RFLE complex in the solution with lower inhibitor concentration. In the case of RFLE, forming a copper complex with caffeic acid, isoquercetin and astragalin is possible. The absence of the complex at a concentration of 10 g/L RFLE can be attributed to a change in the mechanism and the lack of copper ions in the solution due to adequate corrosion protection.
Description
Keywords
UV-VIS, Organometallic Complex, Corrosion Inhibitor, Rubus fruticosus L.
Citation
DOI
10.5937/IMPRC25226Z
Scopus
ISSN
ISBN
978-86-6305-158-4
License
CC-BY-NC-ND