Carpobrotus edulis leaf extract as green corrosion bio-inhibitor for copper in 3.5% NaCl solution

被引:4
作者
Alemnezhad, Mohammad Mahdi [1 ]
Ghaffarinejad, Ali [1 ,2 ]
Omidali, Faezeh [1 ,3 ]
机构
[1] Iran Univ Sci & Technol IUST, Fac Chem, Res Lab Real Samples Anal, Tehran, Iran
[2] Iran Univ Sci & Technol IUST, Electroanalyt Chem Res Ctr, Tehran, Iran
[3] Ayatollah Boroujerdi Univ, Dept Chem, Borujerd, Iran
关键词
Carpobrotus edulis leaf extract; copper corrosion; green corrosion inhibitor; polarization study; electrochemical impedance spectroscopy; 3; 5; wt; % sodium chloride solution; MILD-STEEL; MOLECULAR-DYNAMICS; HCL SOLUTION; MONTE-CARLO; ACID; DOMPERIDONE; PROTECTION; ALLOY;
D O I
10.1080/01694243.2023.2203302
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
In this study, Carpobrotus edulis leaf extract (CELE) has been introduced as a new, eco-friendly, and green inhibitor of copper decomposition in a 3.5 wt.% sodium chloride solution. The water/ethanol extract of the leaves was used to investigate the chemical composition of CELE by the use of liquid chromatography combined with a mass spectrometry detector. Using polarization and electrochemical impedance spectroscopy, the dissolution rate of the copper samples in the presence and absence of various concentrations of CELE (2.5-20 wt.%) were studied, which the best being 20% with an inhibition efficiency of 87%. To evaluate the copper surface morphology and perform surface elemental analysis, scanning electron microscopy and energy dispersive spectroscopy were used. Also, the effect of temperature increment on IE% at the optimum concentration of CELE has been studied, which at 338 K was 57%. Isotherm studies showed that the CELE adsorption mechanism follows the Langmuir isotherm.
引用
收藏
页码:3448 / 3467
页数:20
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