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首页> 外文期刊>ACS Sustainable Chemistry & Engineering >Opuntiol: An Active Principle of Opuntia elatior as an Eco-Friendly Inhibitor of Corrosion of Mild Steel in Acid Medium
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Opuntiol: An Active Principle of Opuntia elatior as an Eco-Friendly Inhibitor of Corrosion of Mild Steel in Acid Medium

机译：乳油：乳油的积极原理，作为酸性介质中低碳钢腐蚀的环保抑制剂

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摘要

The anticorrosion ability of Opuntia elatior fruit extract was tested on mild steel (MS) in 1 M HCl and H2SO4 media by a weight loss method at various temperatures, electrochemical experiments such as potentiodynamic polarization (PDS) and electrochemical impedance spectroscopy (EIS), and surface characterization techniques using scanning electron microscope (SEM) and X-ray diffraction (XRD) studies. The major phytoconsituent, opuntiol, was isolated chromatographically and characterized by infra-red (IR) and nuclear magnetic resonance (NMR) spectroscopic studies. Further, its corrosion inhibitive effect was investigated by PDS, EIS, SEM, and XRD studies. The results of the weight loss studies indicated that inhibition efficiencies were enhanced with an increase in concentration of extract and decreased with a rise in temperature. Adsorption of the extract on a mild steel surface obeyed the Temkin isotherm. Results of PDS revealed the mixed mode inhibitive action, and results of EIS studies confirmed the adsorption of the extract at the metal-solution interface. Further, SEM and XRD studies clearly revealed the film-forming ability of opuntiol on the surface of mild steel. Thus, the anticorrosion activity of O. elatior can be related to the presence of opuntiol.
机译：通过在各种温度下的失重法，电势极化（PDS）和电化学阻抗谱（EIS）等电化学实验，在1 M HCl和H2SO4介质中的低碳钢（MS）上测试了仙人掌果实提取物的防腐能力。使用扫描电子显微镜（SEM）和X射线衍射（XRD）研究表面表征技术。色谱分离了主要的植物成分opuntiol，并通过红外（IR）和核磁共振（NMR）光谱学研究对其进行了表征。另外，通过PDS，EIS，SEM和XRD研究研究了其腐蚀抑制作用。减肥研究的结果表明，抑制效率随提取物浓度的增加而提高，而随温度的升高而降低。提取物在低碳钢表面上的吸附符合Temkin等温线。 PDS的结果显示了混合模式的抑制作用，EIS研究的结果证实了提取物在金属溶液界面的吸附。此外，SEM和XRD研究清楚地显示了在低碳钢表面上形成的鸦胆子成膜能力。因此，O。elatior的抗腐蚀活性可能与鸦胆碱的存在有关。

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