期刊
JOURNAL OF KING SAUD UNIVERSITY SCIENCE
卷 32, 期 7, 页码 2995-3004出版社
ELSEVIER
DOI: 10.1016/j.jksus.2020.08.004
关键词
Pistacia terebinthus; Corrosion inhibitor; Iron; 3% NaCl; DFT; Molecular simulations
In this study, essential oils (EOs) obtained from twigs, leaves and fruits of Terebinth (Pistacia terebinthus L.) was characterized by GC/MS analysis. We tested these as green corrosion inhibitors for iron in the neutral chloride medium (3% NaCl), employing electrochemical impedance spectroscopy (EIS), potentiodynamic polarization (PDP) curves and surface characterizations SEM, EDX, IR spectroscopy were carried out. The theoretical aspect was elaborated using molecular dynamics (MD) simulation and density functional theory (DFT). Analyses of the experimental results showed that the three main components in the EOs from the twigs, fruits and leaves of Terebinth are alpha-Pinene (32.65-50.58%), Limonene (6.88-15.07%), and alpha-Terpineol (2.50-5.15%) with quantitative variations. The fruit EO at a concentration of 3000 ppm is characterized by the best anticorrosive protective properties than the leaf and twig EOs. Indeed, the optimum percentage of this EO required to achieve the maximum efficiency was found to be 86.4% at 3000 ppm. The surface investigation strategies (SEM-EDX and IR) further validated that the corrosion barrier happens because of the adsorption of the inhibitors over the iron/3% NaCl interface. Also, the outcomes of the theoretical approach supported all the experimental results by illustrating the similar trend of inhibition efficiencies of various inhibitors and revealed that Terebinth EOs could serve as an effective inhibitor of iron in 3% NaCl. (C) 2020 Published by Elsevier B.V. on behalf of King Saud University.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据