Amino acid based imidazolium zwitterions as novel and green corrosion inhibitors for mild steel: Experimental, DFT and MD studies

Srivastava, Vandana; Haque, Jiyaul; Verma, Chandrabhan; Singh, Priyanka; Lgaz, Hassane; Salghi, R.; Quraishi, M.A.

doi:10.1016/j.molliq.2017.08.049

Cited by 251 publications

(48 citation statements)

References 46 publications

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“…The adsorption equilibrium constant is related with In this investigation, the evaluated value of 0 ads G  was -33.28 kJ/mol for the investigated corrosion inhibitor. This result indicates that the studied corrosion inhibitor is adsorbed spontaneously on the surface of mild steed and shows mixed mode adsorption [41].…”

Section: Adsorption Isothermmentioning

confidence: 70%

A new synthesized coumarin-derived Schiff base as a corrosion inhibitor of mild steel surface in HCl medium: gravimetric and DFT studies

Zinad¹,

Hanoon²,

Salim³

et al. 2020

Int. J. Corros. Scale Inhib.

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The inhibition efficiency of a new coumarin derivative, namely 2-(6-methylcoumarin-4-yl)-N´-(3-nitrobenzylidene)acetohydrazide (MCNAH), in controlling corrosion of mild steel in 1 M hydrochloric acid solution was investigated by gravimetric techniques at various temperatures (303, 313, 323 and 333 K). The impact of immersion time and temperature on inhibition performance of MCNAH was also studied. MCNAH was synthesized and the chemical structure was elucidated by magnetic resonance spectroscopy (MRS) and Fouriertransform infrared spectroscopy (FT-IR). The experimental results suggested that MCNAH is an excellent corrosion inhibitor for mild steel in 1 M hydrochloric acid environment. The synthesized inhibitor (MCNAH) has the ability to impede the corrosion of mild steel in 1 M hydrochloric acid environment at low and high concentrations. The inhibitive efficiency was found to increase with increasing concentration of MCNAH and decrease with increasing time and temperature. The thermodynamic parameters were estimated and discussed. The adsorption of the synthesized inhibitor on the surface of the tested mild steel in the presence of HCl obeyed the Langmuir adsorption isotherm. The relationship between the structure of the new synthesized inhibitor and its inhibitive effects was investigated using theoretical calculations. The experimental and density functional theory (DFT) calculation results are in good agreement. The results clearly show that the inhibition mechanism involves a blocking mechanism of action of the inhibitor.

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Section: Adsorption Isothermmentioning

confidence: 70%

A new synthesized coumarin-derived Schiff base as a corrosion inhibitor of mild steel surface in HCl medium: gravimetric and DFT studies

Zinad¹,

Hanoon²,

Salim³

et al. 2020

Int. J. Corros. Scale Inhib.

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show abstract

“…The associated electrochemical parameters such as corrosion potential (E corr ), corrosion current density (i corr ), anodic and cathodic Tafel slopes (β a and β c ) were obtained from the intersection of anodic and cathodic Tafel lines, and corrosion inhibition efficiencies PDP (%)  were calculated and presented in Table 1. It is clear that the addition of inhibitor hindered the acid attack on the steel electrode and a comparison of curves in both cases, showed that, with respect to the blank, increasing the concentration of the inhibitor gave rise to a consistent decrease in anodic and cathodic current densities indicating that inhibitor acts as mixed type inhibitor [17,18]. Increasing of inhibitor concentration results a reduction in the corrosion current densities and an increase in η%, which suggests that the protective film adsorbed on the metal surface tends to be more complete at higher inhibitor concentrations.…”

Section: Polarization Resultsmentioning

confidence: 99%

Anticorrosive efficiency of novel 1,4-benzothiazinone derivative for mild steel in phosphoric acid solution

2019

Int. J. Corros. Scale Inhib.

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Corrosion is a big challenge and many corrosion control methods have been adopted all over the world. It can damage the materials, which are used to construct automobiles, pipeline systems, bridges and buildings, petroleum refineries, etc. Corrosion inhibitors are used as effective alternatives for the protection of metallic surfaces against corrosion. Herein, the corrosion inhibition characteristics of 2-(4-сhlorophenyl)-1,4-benzothiazin-3-one (CBT) have been studied as efficient inhibitor for corrosion control of mild steel in 2.0 M phosphoric acid solution using potentiodynamic polarization, weight loss measurements and electrochemical impedance spectroscopy (EIS) techniques. The effects of inhibitor concentration on the inhibition action were investigated. The corrosion inhibition efficiency increased with the increase of CBT concentration up to 85% obtained at 25 °C at 5 mM concentration. The adsorption of CBT on metal surface obeyed Langmuir adsorption isotherm. Adsorption isotherm study suggests that both physical and chemical adsorptions may be the type of adsorption of the inhibitor on the metal surface. Polarization measurements showed that the CBT acted as mixed inhibitor. The surface morphology of mild steel, in the absence and presence of CBT in 2.0 M phosphoric acid solution, was studied using scanning electron microscopy (SEM). The SEM analysis strongly supports the results of electrochemical measurements.

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“…The problem of corrosion is a primary concern that must be confronted for safety, environmental and economic reasons. It also leads to heavy maintenance environmental costs and impacts of several billion dollars [3][4]. In recent years, particularly in developing countries, corrosion research has focused on the development of "green corrosion inhibitors", of which compounds have good inhibition efficiency, without environmental impact [5][6][7], and reduced maintenance costs [8].…”

Section: Introductionmentioning

confidence: 99%

Iron Corrosion Green Inhibition in a 3% NaCl Solution, by Leaves Extract from Pistacia Terebinthus L. Growing Wild in Morocco

Barbouchi¹,

Benzidia²,

Idrissi³

et al. 2020

Port. Electrochim. Acta

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In the present paper, the methanol extract from the leaves of Pistacia terebinthus L. (PT) was characterized by GC/MS analysis. It was tested as a corrosion inhibitor for iron in a 3% NaCl solution, using gravimetric measurements and electrochemical methods (potentiodynamic polarizations and electrochemical impedance spectroscopy). Fourteen compounds were identified; the major compounds are palmitic acid (31.5%), stearic acid (25.7%) and oleic acid (11.3%). The data showed that the tested extract offers good corrosion resistance. The constituents of the PT extract affected polarization resistance (Rp) and corrosion current density (icorr), demonstrating that the proposed inhibitor hinders corrosion reactions. The results obtained at 200 ppm are very interesting, and reach maximum values of 96.96%, 89% and 64.82%, respectively, which were confirmed by scanning electron microscopy (SEM), coupled with energy scattering of X-ray spectroscopy (EDX).

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Amino acid based imidazolium zwitterions as novel and green corrosion inhibitors for mild steel: Experimental, DFT and MD studies

Cited by 251 publications

References 46 publications

A new synthesized coumarin-derived Schiff base as a corrosion inhibitor of mild steel surface in HCl medium: gravimetric and DFT studies

A new synthesized coumarin-derived Schiff base as a corrosion inhibitor of mild steel surface in HCl medium: gravimetric and DFT studies

Anticorrosive efficiency of novel 1,4-benzothiazinone derivative for mild steel in phosphoric acid solution

Iron Corrosion Green Inhibition in a 3% NaCl Solution, by Leaves Extract from Pistacia Terebinthus L. Growing Wild in Morocco

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