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Adsorption characteristics and inhibition effect of two Schiff base compounds on corrosion of mild steel in 0.5 M HCl solution: experimental, DFT studies, and Monte Carlo simulation
In this work, we report the synthesis of two Schiff bases of substituted gallic acid derivatives via amidation reaction and their characterization using (1)H-NMR spectroscopy to study their inhibition performance on the aggressive attack of HCl on mild steel (MS). The inhibitive performance was exam...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
The Royal Society of Chemistry
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9062527/ https://www.ncbi.nlm.nih.gov/pubmed/35515280 http://dx.doi.org/10.1039/c9ra00397e |
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author | EL Basiony, N. M. Elgendy, Amr. Nady, H. Migahed, M. A. Zaki, E. G. |
author_facet | EL Basiony, N. M. Elgendy, Amr. Nady, H. Migahed, M. A. Zaki, E. G. |
author_sort | EL Basiony, N. M. |
collection | PubMed |
description | In this work, we report the synthesis of two Schiff bases of substituted gallic acid derivatives via amidation reaction and their characterization using (1)H-NMR spectroscopy to study their inhibition performance on the aggressive attack of HCl on mild steel (MS). The inhibitive performance was examined using chemical (weight loss) and electrochemical (Tafel and EIS) test methods. The results indicate that these derivatives significantly suppress the dissolution rate of mild steel via adsorption phenomena, which correlates to the Langmuir adsorption model. Tafel data display the mixed-type properties of these compounds and EIS results show that increasing Schiff base concentration not only leads to delaying the charge transfer (R(ct)) of iron from 26.4 ohm cm(−2) to 227.7 ohm cm(−2) but also decreases the capacitance of the adsorbed double layer (C(dl)) from 8.58 (F cm(−2)) × 10(−5) to 2.55 (F cm(−2)) × 10(−5). The inhibition efficiency percentage reaches the peak (90%) at optimum concentration of 250 ppm. The Monte Carlo simulations confirm the adsorption ability of the as-prepared compounds on the Fe (1 1 0) crystal. The SEM/EDX results revealed the presence of a protective film on the mild steel sample. |
format | Online Article Text |
id | pubmed-9062527 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | The Royal Society of Chemistry |
record_format | MEDLINE/PubMed |
spelling | pubmed-90625272022-05-04 Adsorption characteristics and inhibition effect of two Schiff base compounds on corrosion of mild steel in 0.5 M HCl solution: experimental, DFT studies, and Monte Carlo simulation EL Basiony, N. M. Elgendy, Amr. Nady, H. Migahed, M. A. Zaki, E. G. RSC Adv Chemistry In this work, we report the synthesis of two Schiff bases of substituted gallic acid derivatives via amidation reaction and their characterization using (1)H-NMR spectroscopy to study their inhibition performance on the aggressive attack of HCl on mild steel (MS). The inhibitive performance was examined using chemical (weight loss) and electrochemical (Tafel and EIS) test methods. The results indicate that these derivatives significantly suppress the dissolution rate of mild steel via adsorption phenomena, which correlates to the Langmuir adsorption model. Tafel data display the mixed-type properties of these compounds and EIS results show that increasing Schiff base concentration not only leads to delaying the charge transfer (R(ct)) of iron from 26.4 ohm cm(−2) to 227.7 ohm cm(−2) but also decreases the capacitance of the adsorbed double layer (C(dl)) from 8.58 (F cm(−2)) × 10(−5) to 2.55 (F cm(−2)) × 10(−5). The inhibition efficiency percentage reaches the peak (90%) at optimum concentration of 250 ppm. The Monte Carlo simulations confirm the adsorption ability of the as-prepared compounds on the Fe (1 1 0) crystal. The SEM/EDX results revealed the presence of a protective film on the mild steel sample. The Royal Society of Chemistry 2019-04-04 /pmc/articles/PMC9062527/ /pubmed/35515280 http://dx.doi.org/10.1039/c9ra00397e Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/ |
spellingShingle | Chemistry EL Basiony, N. M. Elgendy, Amr. Nady, H. Migahed, M. A. Zaki, E. G. Adsorption characteristics and inhibition effect of two Schiff base compounds on corrosion of mild steel in 0.5 M HCl solution: experimental, DFT studies, and Monte Carlo simulation |
title | Adsorption characteristics and inhibition effect of two Schiff base compounds on corrosion of mild steel in 0.5 M HCl solution: experimental, DFT studies, and Monte Carlo simulation |
title_full | Adsorption characteristics and inhibition effect of two Schiff base compounds on corrosion of mild steel in 0.5 M HCl solution: experimental, DFT studies, and Monte Carlo simulation |
title_fullStr | Adsorption characteristics and inhibition effect of two Schiff base compounds on corrosion of mild steel in 0.5 M HCl solution: experimental, DFT studies, and Monte Carlo simulation |
title_full_unstemmed | Adsorption characteristics and inhibition effect of two Schiff base compounds on corrosion of mild steel in 0.5 M HCl solution: experimental, DFT studies, and Monte Carlo simulation |
title_short | Adsorption characteristics and inhibition effect of two Schiff base compounds on corrosion of mild steel in 0.5 M HCl solution: experimental, DFT studies, and Monte Carlo simulation |
title_sort | adsorption characteristics and inhibition effect of two schiff base compounds on corrosion of mild steel in 0.5 m hcl solution: experimental, dft studies, and monte carlo simulation |
topic | Chemistry |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9062527/ https://www.ncbi.nlm.nih.gov/pubmed/35515280 http://dx.doi.org/10.1039/c9ra00397e |
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