Amino acid and cinnamaldehyde conjugated Schiff bases as proficient corrosion inhibitors for mild steel in 1 M HCl at higher temperature and prolonged exposure: Detailed electrochemical, adsorption and theoretical study

Satpati, Sanjoy; Suhasaria, Aditya; Ghosal, Subhas; Saha, Abhijit; Dey, Sukalpa; Sukul, Dipankar

doi:10.1016/j.molliq.2020.115077

Cited by 63 publications

(23 citation statements)

References 63 publications

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“…When the SMIS concentration is 4.0 g/L, the corrosion current density decreases from 16.93 mA/cm 2 to 1.35 mA/cm 2 , indicating that adding SMIS improves corrosion inhibition efficiency. And the inhibition efficiency is 92.03 %, owing to the corresponding adsorption between SMIS and carbon steel, forming a stable protective film on Q235 carbon steel [17] . Combined with our previous research, [11] the inhibition efficiency of SMIF (95.92 %) > SMIS (92.03 %) > SMID (89.08 %).…”

Section: Results Analysissupporting

confidence: 51%

“…And the inhibition efficiency is 92.03 %, owing to the corresponding adsorption between SMIS and carbon steel, forming a stable protective film on Q235 carbon steel. [17] Combined with our previous research, [11] the inhibition efficiency of SMIF (95.92 %) > SMIS (92.03 %) > SMID (89.08 %). The inhibition efficiency of SMIF and SMIS is higher than SMID, mainly governed by the Π electrons of SMIF and SMID, which combined with the 3d orbit of Fe.…”

Section: Tafel Analysissupporting

confidence: 58%

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Experimental and Theoretical Studies on the Inhibition Properties of an Imidazoline Derivative on Q235 Corrosion in a Simulated Concrete Pore Solution

et al. 2022

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A novel imidazoline derivative has been synthesized and its molecular structure has been confirmed by IR, Raman, elemental analysis and NMR, the molecular structure of the inhibitor is similar to that of the previous research. In this paper, the inhibition performance and inhibition mechanism of the three inhibitors (SMID, SMIS and SMIF) in concrete simulation solution are analyzed and compared. The corrosion inhibition efficiency of SMIF (96.02 %) > SMIS (93.62 %)>SMID(93.01 %) in weight loss experiment, the SMIS of electrochemistry of Nyquist and potentiodynamic polarization were 89.72 % and 92.03 % respectively, which indicated that SMIS had good corrosion inhibition effect. Electrochemical experiments show that the SMIS belongs to anodic type, and the mechanism of SMIS can form a protective film on the surface Q235 and inhibit the charge transfer. The results of FTIR, EDS and XPS show that SMIS can be adsorbed on the surface of Q235, which is also confirmed by density functional theory (DFT) and molecular dynamics simulation (MD).

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Section: Results Analysissupporting

confidence: 51%

Section: Tafel Analysissupporting

confidence: 58%

Experimental and Theoretical Studies on the Inhibition Properties of an Imidazoline Derivative on Q235 Corrosion in a Simulated Concrete Pore Solution

et al. 2022

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“…Moreover, in the EIS test of solid electrodes, the curve deviated from the semicircle trajectory to show a deformed semicircular shape, a phenomenon known as the “dispersion effect”, which was generally considered to be caused by the active site of the metal surface being heterogeneous, or the poor conductivity of the solution. 43 Therefore, by combining the Nyquist and Bode diagrams obtained by the experiment, the equivalent circuit shown in Fig. 5 was selected to fit the impedance spectrum, and the fitted parameters are listed in Table 3 .…”

Section: Resultsmentioning

confidence: 99%

Developing novel imidazoline-modified glucose derivatives as eco-friendly corrosion inhibitors for Q235 steel

Huang

et al. 2023

RSC Adv.

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“…At 308 and 318 K, the inhibition efficiency can reach 94.03% and 91.04%, respectively, indicating that OL can also play a good role in high temperatures. 38 Relevant literature shows 39 that the excellent inhibition effect of a corrosion inhibitor is related to its adsorption form on the surface of carbon steel. OL was fitted with different isothermal equations, and finally, the Langmuir adsorption isotherm equation has a high fitting degree; Equation (7) is the Langmuir adsorption isotherm equation.…”

Section: Weight Loss and Langmuirmentioning

confidence: 99%

Extraordinary corrosion inhibition efficiency of omeprazole in 1 M HCl solution: Experimental and theoretical investigation

Wang

Liu

et al. 2023

Surface & Interface Analysis

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Omeprazole (OL) as a green and efficient drug corrosion inhibitor was first investigated for the corrosion inhibition of Q235 carbon steel at 298, 308, and 318 K. Open circuit potential, Tafel, electrochemical impedance spectroscopy, and weight loss were used to evaluate the inhibition performance toward Q235 carbon steel in HCl medium. The results showed that OL exhibited excellent corrosion protection to carbon steel at different temperatures because of forming the compact and ordered OL adsorption film on Q235 surface. Especially, the inhibition efficiency increased to 96.11%, 95.12%, and 94.04% for 40-mg/L OL in Tafel at 298, 308, and 318 K. Meanwhile, N-Fe and S-Fe bonds determined from X-ray photoelectron spectroscopy revealed the multiple anchoring interactions between steel and OL with S and N atoms as the active sites. Density functional theory and molecular dynamics simulations showed the low energy gap ΔE and high adsorption energy values, besides the radial distribution function (RDF) indicating the strong chemical sorption of OL on Fe surface, which proved the superior corrosion inhibition efficiency of OL at a molecular or atomic level.

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Amino acid and cinnamaldehyde conjugated Schiff bases as proficient corrosion inhibitors for mild steel in 1 M HCl at higher temperature and prolonged exposure: Detailed electrochemical, adsorption and theoretical study

Cited by 63 publications

References 63 publications

Experimental and Theoretical Studies on the Inhibition Properties of an Imidazoline Derivative on Q235 Corrosion in a Simulated Concrete Pore Solution

Experimental and Theoretical Studies on the Inhibition Properties of an Imidazoline Derivative on Q235 Corrosion in a Simulated Concrete Pore Solution

Developing novel imidazoline-modified glucose derivatives as eco-friendly corrosion inhibitors for Q235 steel

Extraordinary corrosion inhibition efficiency of omeprazole in 1 M HCl solution: Experimental and theoretical investigation

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