Poly(sodium acrylate) and Poly(acrylic acid sodium) as an eco-friendly corrosion inhibitor of mild steel in normal hydrochloric acid: experimental, spectroscopic and theoretical approach

Ouass, Abdelkarim; Galai, M.; Ouakki, M.; Ech–chihbi, E.; Kadiri, Lamya; Hsissou, Rachid; Essaadaoui, Youness; Berisha, Avni; Cherkaoui, Mohammed; Lebkiri, Ahmed; Rifi, El Housseine

doi:10.1007/s10800-021-01556-y

Cited by 67 publications

(14 citation statements)

References 70 publications

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“…Additionally, careful examination of the Nyquist curves suggests that the corrosion inhibition mechanism was the same for the unprotected and protected experiments owing to the semicircle loops [ 7 , 33 ]. As indicated in Figure 4 , judging from the significant increases in the sizes of the semicircles and the charge transfer resistance in the different concentrations of epoxy prepolymer, one could conclude that the TGP synthesized was able to adsorb on the metallic substrates, forming a barrier and restricting the metal dissolution [ 34 , 35 ]. Then, EIS results were subsequently fitted from an equivalent circuit comprising the constant phase element (CPE), the solution resistance (R s ) and the charge transfer resistance (R ct ), as displayed in Figure 4 .…”

Section: Resultsmentioning

confidence: 99%

Synthesis Characterization and Highly Protective Efficiency of Tetraglycidyloxy Pentanal Epoxy Prepolymer as a Potential Corrosion Inhibitor for Mild Steel in 1 M HCl Medium

et al. 2022

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Anticorrosive protection efficiency of novel tetrafunctional epoxy prepolymer, namely 2,3,4,5-tetraglycidyloxy pentanal (TGP), for mild steel in 1 M HCl medium was assessed through potentiodynamic polarization (PDP), electrochemical impedance spectroscopy (EIS), scanning electron microscope (SEM), energy dispersive X-ray spectroscopy (EDS), contact angle (CA), adsorption isotherm model, temperature effect and thermodynamic parameters. The synthesized TGP was characterized and confirmed by Fourier transform infrared (FTIR) spectroscopy and nuclear magnetic resonance (NMR). The inhibitory efficiencies found at lower concentration of the prepolymer TGP were85% (PDP) and 87.17% (EIS). PDP measurement illustrated that the TGP behaved as a mixed-type inhibitor in the realized solution. SEM and EDS analysis showeda significant decrease in the corrosion of the MS surface in the presence of the inhibitory prepolymer compared with the blank (1 M HCl). Langmuir adsorption isotherm is the most acceptable modelto describe the TGP epoxy prepolymer on the MS area.

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Section: Resultsmentioning

confidence: 99%

Synthesis Characterization and Highly Protective Efficiency of Tetraglycidyloxy Pentanal Epoxy Prepolymer as a Potential Corrosion Inhibitor for Mild Steel in 1 M HCl Medium

et al. 2022

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“…A conformer search (Boltzmann jump technique; the number of conformers: 8000; utilizing the COMPASS II forcefield) was undertaken in the early phase of the procedure in order to acquire the lowest feasible starting energy for the molecule while speeding up DFT computations [29][30][31][32][33][34][35][36][37][38][39][40][41][42]. Calculations for DFT were started with the lowest-energy conformer shown by the image in Figure 5.…”

Section: Dft Analysismentioning

confidence: 99%

“…Eads / J mol -1 Figure 10. Distribution of adsorption energies of the inhibitor obtained from MC calculations MD is extensively considered a correct representation of the adsorption dynamics [32,33,35,39]. It is evident that after several hundreds of ps of NVT simulation, the inhibitors (Figure 9) adopt a somewhat flat structure on one side of the molecule rings onto the metal surface and is strongly adsorbed onto the Al surface.…”

Section: Figure 9 MC and Md Possess The Lowest Adsorption Configurati...mentioning

confidence: 99%

Experimental and theoretical investigations of new Schiff base compound adsorption on aluminium in 1 M HCl

Jafari

Ameri

Soltanolkottabi

et al. 2022

J. Electrochem. Sci. Eng.

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The new Schiff base, 2,2'-((1Z,1'Z)-(((propane-1,3-diylbis(oxy))bis(2,1-phenylene))bis(methanylylidene))bis(azanylylidene))diethanol, was investigated as a corrosion inhibitor of aluminium in 1 M HCl. Polarization and electrochemical impedance measurements were used for this purpose. Polarization curves showed that the compound is a mixed-type corrosion inhibitor. Also, the results showed an increase in inhibition efficiency as the concentration of the compound increased. The maximum corrosion inhibition efficiency of approximately 81 % was reached at the concentration of 2 mg/L of the inhibitor. The results of the density functional theory method were consistent with the experimental results. The surface morphology of the samples was examined under atomic force microscopy.

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“…As seen in Figure 7, HOMO in the inhibitor molecules is positioned on one side of the ring containing O atoms, whereas LUMO is located on the opposite side of the ring, implying that these part of the molecule can are prone to electron tranfer to/from the metal's surface [49][50][51].…”

Section: Dftmentioning

confidence: 99%

“…When the heights are in the zone of 1-3.5 Å in range, it is thought to indicate a chemisorb able process. On the other hand, for physical adsorption, RDF peaks are expected to be present at distances larger than 3.5 Å [47][48][49][50][51].…”

Section: Monte Carlo and Molecular Dynamic Simulationsmentioning

confidence: 99%

The Effect of new reduced form of Schiff-base Ligands on corrosion inhibition of API 5L in seawater

Jafari

Soltanolkottabi

Rezaeivala

et al. 2022

Preprint

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Three synthesized Schiff base named 2,2’- (((2,2-dimethylpropane-1,3-diyl)bis(azanediyl)bis(methylene)disphenol (I1), 4,4’- (((2,2-dimethylpropane-1,3-diyl)bis(azanediyl)bis(methylene)bis(2-methoxyphenol) (I2) and 6,6’- (((2,2-dimethylpropane-1,3-diyl)bis(azanediyl)bis(methylene)bis(2-methoxyphenol) (I3) were evaluated as corrosion inhibitors for API 5L grade B steel in the artificial seawater by electrochemical impedance, polarization and Quantum chemical calculations methods. The results showed that all three compounds act as good inhibitors for carbon steel, but the I3 has the best inhibition efficiency of about 58% at 1mg/L. The results of density functional theory method were consistent with the experimental results.

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Poly(sodium acrylate) and Poly(acrylic acid sodium) as an eco-friendly corrosion inhibitor of mild steel in normal hydrochloric acid: experimental, spectroscopic and theoretical approach

Cited by 67 publications

References 70 publications

Synthesis Characterization and Highly Protective Efficiency of Tetraglycidyloxy Pentanal Epoxy Prepolymer as a Potential Corrosion Inhibitor for Mild Steel in 1 M HCl Medium

Synthesis Characterization and Highly Protective Efficiency of Tetraglycidyloxy Pentanal Epoxy Prepolymer as a Potential Corrosion Inhibitor for Mild Steel in 1 M HCl Medium

Experimental and theoretical investigations of new Schiff base compound adsorption on aluminium in 1 M HCl

The Effect of new reduced form of Schiff-base Ligands on corrosion inhibition of API 5L in seawater

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