Experimental and Theoretical Evaluations: Green Synthesis of New Organic Compound bis ethanethioyl oxalamide as Corrosion Inhibitor for Copper in 3.5% NaCl
Hussien, H., Shahen, S., Abdel-karim, A., Ghayad, I., El-Shamy, O., Mostfa, N., ahmed, N. (2023). Experimental and Theoretical Evaluations: Green Synthesis of New Organic Compound bis ethanethioyl oxalamide as Corrosion Inhibitor for Copper in 3.5% NaCl. EKB Journal Management System, 66(3), 189-196. doi: 10.21608/ejchem.2023.182301.7364
Hoda Hussien; Seham Shahen; Amal M. Abdel-karim; Ibrahim Mohamed Ghayad; Omnia A. A. El-Shamy; Nashwa Mostfa; nour el-din ahmed. "Experimental and Theoretical Evaluations: Green Synthesis of New Organic Compound bis ethanethioyl oxalamide as Corrosion Inhibitor for Copper in 3.5% NaCl". EKB Journal Management System, 66, 3, 2023, 189-196. doi: 10.21608/ejchem.2023.182301.7364
Hussien, H., Shahen, S., Abdel-karim, A., Ghayad, I., El-Shamy, O., Mostfa, N., ahmed, N. (2023). 'Experimental and Theoretical Evaluations: Green Synthesis of New Organic Compound bis ethanethioyl oxalamide as Corrosion Inhibitor for Copper in 3.5% NaCl', EKB Journal Management System, 66(3), pp. 189-196. doi: 10.21608/ejchem.2023.182301.7364
Hussien, H., Shahen, S., Abdel-karim, A., Ghayad, I., El-Shamy, O., Mostfa, N., ahmed, N. Experimental and Theoretical Evaluations: Green Synthesis of New Organic Compound bis ethanethioyl oxalamide as Corrosion Inhibitor for Copper in 3.5% NaCl. EKB Journal Management System, 2023; 66(3): 189-196. doi: 10.21608/ejchem.2023.182301.7364

Experimental and Theoretical Evaluations: Green Synthesis of New Organic Compound bis ethanethioyl oxalamide as Corrosion Inhibitor for Copper in 3.5% NaCl

Egyptian Journal of Chemistry
Volume 66, Issue 3, March 2023, Page 189-196  XML PDF (760.19 K)
Document Type: Original Article
DOI: 10.21608/ejchem.2023.182301.7364
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Authors
Hoda Hussien1; Seham Shahenorcid 2; Amal M. Abdel-karim email orcid 3; Ibrahim Mohamed Ghayad4; Omnia A. A. El-Shamyorcid 5; Nashwa Mostfaorcid 2; nour el-din ahmedorcid 6
1Central Metallurgical Research and Development Institute (CMRDI), P.O.Box:37, Helwan, Cairo, Egypt
2Department of Chemistry, Faculty of Science (Girls), Al-Azhar University, P.O. Box: 11754, Yousef Abbas Str., Nasr City, Cairo, Egypt
3Physical Chemistry department, NRC, Dokki, Giza, Egypt.
4Corrosion Control & Surface Protection Lab., Metals Technology Dept., Central Metallurgical Research and Development Institute
5Egyptian Petroleum Research Institute
6Ain shams university, faculty of science
Abstract
A newly synthesized (carbamothiol) oxalamide derivative N1, N2-bis (2-(((2-((2 aminoethyl) amino) ethyl) amino) ethanethioyl) oxalamide (bis N), was investigated for its ability to suppress corrosion of copper in 3.5% NaCl. The chemical structure was demonstrated using FT-IR, 1H-NMR, and 13C-NMR. According to weight loss (WL), potentiodynamic polarization (PDF), and electrochemical impedance spectroscopy (EIS) techniques, the synthetic inhibitor exhibits higher corrosion inhibition efficiency. The corrosion rate decreases and the inhibition efficiency increases linearly with the concentration of inhibitor, reaching 93.3% at 0.01M. The adsorption of bis N obeys the Langmuir adsorption isotherm. The calculated adsorption isotherm parameter ∆Gads is a negative value equal to -10.14 KJ/mol, suggesting that the bis N is adsorbed on the copper surface and achieves the spontaneous process. The efficiency of bis N for metal protection enhancement is assessed using density functional theory (DFT). Evaluation and discussion of quantum different descriptors are also included.
Keywords
Copper corrosion; inhibition; potentiodynamic polarization; electrochemical impedance; sodium chloride; DFT
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