ATR-FTIR characterization of the white willow bark extract used as a copper corrosion inhibitor
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Date
2025
Authors
Zdravković, Milica
Savić Jovanović, Slađana
Grekulović, Vesna
Stanković, Dalibor
Dimitrievska, Iva
Journal Title
Journal ISSN
Volume Title
Publisher
University of Belgrade - Technical Faculty in Bor
Source
Proceedings [Elektronski izvor] - 56th International October Conference on Mining and Metallurgy - IOC 2025, 22-25 October, 2025, Bor Lake, Serbia
Volume
Issue
Abstract
As proved inhibitor of copper corrosion in saline environment, the white willow bark (WWB) extract was characterized using the Attenuated Total Reflectance-Fourier Transform Infrared spectroscopy (ATRFTIR) method. By identifying the bands typical for phenolic profile of WWB extract, the anti-corrodic properties of WWB were explained. The hydrogen-bonded O-H stretching vibrations present in WWB extract is attributed to the phenolic hydroxyl groups and alcoholic hydroxyl groups within glycosides. The C-H stretching vibrations typical for salicin and for glucoside part of salicin aromatic were also identified, as well as the C=C ring stretching vibrations and C-O stretching vibrations that can be attributed to phenolic and alcoholic groups. The presence of these functional groups confirms the presence of a protective film of the WWB extract on the copper surface, protecting the metal from the corrosive effect of chloride ions.
Description
Keywords
white willow bark, ATR-FTIR, copper, corrosion inhibitor
Citation
DOI
10.5937/IOC25579Z
Scopus
ISSN
ISBN
978-86-6305-164-5
License
CC-BY-NC-ND