TY - JOUR AU - Touazi, Souad AU - Bučko, Mihael AU - Maizia, Radouane AU - Sahi, Samira AU - Zaidi, Nadia AU - Makhloufi, Laid PY - 2022/09/30 Y2 - 2024/03/28 TI - Anticorrosion action of the olive leaf compounds extracted under optimal parameters as determined with experimental design: Scientific paper JF - Journal of the Serbian Chemical Society JA - J. Serb. Chem. Soc. VL - 88 IS - 2 SE - Electrochemistry DO - 10.2298/JSC220513064T UR - https://shd-pub.org.rs/index.php/JSCS/article/view/11851 SP - 169-182 AB - <p>In this study, an agricultural waste product was used to prepare a green corrosion inhibitor based on olive leaves (<em>Olea europaea </em>var. <em>syslves­tris</em>). Firstly, an optimization study of antioxidant activity of <em>O. europaea </em>leaves monitored by the DPPH free radical trapping method, was carried out using full factorial design. In the second step, the extract obtained under optimal conditions was tested as a green corrosion inhibitor for steel in 0.5 mol dm-3 HCl, using gravi­metric and electrochemical methods. The results obtained by various tech­niques showed that the extract acted as a mixed-type inhibitor. The adsorption of the inhibitor was spontaneous (Δ<em>G</em><sub>ads</sub> = −12.443 kJ mol<sup>-1</sup>), through the mecha­nism of physical adsorption, and it obeyed the Langmuir adsorption isotherm. The highest corrosion inhibition efficiency of 92 % was obtained for 2.8 10<sup>-3</sup> g cm<sup>-3</sup>of inhi­bitor, as measured by gravimetric method.</p> ER -