TARAXACUM OFFICINALE EXTRACT AS A GREEN ALTERNATIVE FOR CORROSION CONTROL OF STEEL IN ACIDIC ENVIRONMENT
Original scientific paper
DOI:
https://doi.org/10.2298/CICEQ250322029TKeywords:
corrosion, green inhibitors, environmentally friendly, dandelion root extract, electrochemistryAbstract
This study investigates the potential of Taraxacum officinale (TO) root extract as an environmentally friendly corrosion inhibitor for two types of steel, TH-550 and TS-275, in an acidic environment. The corrosion inhibition was assessed by monitoring the weight loss of steel samples over a 72-hour immersion period in four different solutions: blank 4% HCl solution and 4% HCl solutions containing 0.5, 1.0, and 1.5 g/L of TO root extract. The inhibitor efficiency, calculated from weight loss data, ranged from 70% to 89%. Surface analysis of the steel samples, conducted after 24 hours of immersion, revealed the formation of a uniform protective film on the steel exposed to the inhibited solutions, while samples in the blank acidic solution showed significant corrosion. Fourier-transform infrared spectroscopy analysis identified key metal-complexing functional groups in the TO root extract, including aromatic C—H, C—O, C=O, and O—H, which are likely responsible for the interaction with the steel surface. Potentiodynamic polarization measurements indicated that the TO root extract acts as an anodic corrosion inhibitor, with the ability to cover up to 88% of the steel surface. Electrochemical impedance spectroscopy, in combination with polarization and weight loss results, demonstrated that the inhibitor efficiency of the TO root extract increases with concentration.
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Copyright (c) 2025 Milorad Tomić, Marija Mitrović, Regina Fuchs-Godec, Nebojša Vasiljević, Dragan Tošković, Miomir Pavlović

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Ministarstvo Civilnih Poslova Bosne i Hercegovine
Grant numbers VM 05-07-1-3483-34/23 -
Ministry of Scientific and Technological Development, Higher Education and Information Society
Grant numbers 19.032/961-88/24



