2025

Zdravković, Milica 
Grekulović, Vesna 
Huseinović, Edina
Vianello, Robert
Štrbac, Nada 
Huremovic, Melita
Gorgievski, Milan 

University of Belgrade, Technical Faculty in Bor

Proceedings - XVI International Mineral Processing and Recycling Conference, IMPRC, 28 – 30 May 2025, Belgrade, Serbia

226

231

English

M33 - Conference paper at an international conference, printed in full

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.

UV-VIS, Organometallic Complex, Corrosion Inhibitor, Rubus fruticosus L.

DOI

10.5937/IMPRC25226Z

ISBN

978-86-6305-158-4

URI

https://repozitorijum.tfbor.bg.ac.rs/handle/...