{"title":"Combined Electrochemical and DTF Approaches to Elaeagnus Angustifolia Extract as a Green Corrosion Inhibitor for Mild Steel in HCl Solution","authors":"Mansoor Bozorg , Atieh Koochakiabkenar , Yalda Ashouri","doi":"10.1016/j.molliq.2025.127993","DOIUrl":null,"url":null,"abstract":"<div><div>This study examines the corrosion inhibition properties of water extracts from <em>Elaeagnus angustifolia</em> (EA extract) fruit on mild steel (MS) in a 1 M HCl solution. The study assesses the effectiveness of different concentrations of EA extract as an eco-friendly corrosion inhibitor. The methodology employed includes gravimetric measurements, electrochemical impedance spectroscopy (EIS), potentiodynamic polarization (PDP), scanning electron microscopy (SEM), and density functional theory (DFT) calculations. The results show that increasing the concentration of the EA extract enhances the inhibition efficiency. At 100 mg/L, EA extract achieved inhibition efficiencies of 82.4 % (gravimetric), 92.8 % (EIS), and 86.9 % (PDP), indicating strong protective behavior. Additionally, the data best aligns with the Langmuir adsorption isotherm model. Quantum chemical calculations further confirm the adsorption of EA extract organic molecules on the surface, helping to explain the corrosion inhibition mechanism.</div></div>","PeriodicalId":371,"journal":{"name":"Journal of Molecular Liquids","volume":"434 ","pages":"Article 127993"},"PeriodicalIF":5.3000,"publicationDate":"2025-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Molecular Liquids","FirstCategoryId":"92","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0167732225011705","RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
引用次数: 0
Abstract
This study examines the corrosion inhibition properties of water extracts from Elaeagnus angustifolia (EA extract) fruit on mild steel (MS) in a 1 M HCl solution. The study assesses the effectiveness of different concentrations of EA extract as an eco-friendly corrosion inhibitor. The methodology employed includes gravimetric measurements, electrochemical impedance spectroscopy (EIS), potentiodynamic polarization (PDP), scanning electron microscopy (SEM), and density functional theory (DFT) calculations. The results show that increasing the concentration of the EA extract enhances the inhibition efficiency. At 100 mg/L, EA extract achieved inhibition efficiencies of 82.4 % (gravimetric), 92.8 % (EIS), and 86.9 % (PDP), indicating strong protective behavior. Additionally, the data best aligns with the Langmuir adsorption isotherm model. Quantum chemical calculations further confirm the adsorption of EA extract organic molecules on the surface, helping to explain the corrosion inhibition mechanism.
期刊介绍:
The journal includes papers in the following areas:
– Simple organic liquids and mixtures
– Ionic liquids
– Surfactant solutions (including micelles and vesicles) and liquid interfaces
– Colloidal solutions and nanoparticles
– Thermotropic and lyotropic liquid crystals
– Ferrofluids
– Water, aqueous solutions and other hydrogen-bonded liquids
– Lubricants, polymer solutions and melts
– Molten metals and salts
– Phase transitions and critical phenomena in liquids and confined fluids
– Self assembly in complex liquids.– Biomolecules in solution
The emphasis is on the molecular (or microscopic) understanding of particular liquids or liquid systems, especially concerning structure, dynamics and intermolecular forces. The experimental techniques used may include:
– Conventional spectroscopy (mid-IR and far-IR, Raman, NMR, etc.)
– Non-linear optics and time resolved spectroscopy (psec, fsec, asec, ISRS, etc.)
– Light scattering (Rayleigh, Brillouin, PCS, etc.)
– Dielectric relaxation
– X-ray and neutron scattering and diffraction.
Experimental studies, computer simulations (MD or MC) and analytical theory will be considered for publication; papers just reporting experimental results that do not contribute to the understanding of the fundamentals of molecular and ionic liquids will not be accepted. Only papers of a non-routine nature and advancing the field will be considered for publication.