A combined electrochemical and theoretical study of N,N′-bis(benzimidazole-2yl-ethyl)-1,2-diaminoethane as a new corrosion inhibitor for carbon steel surface

Guadalupe, Hernández J.; Garcı́a-Ochoa, E.; Maldonado‐Rivas, Pablo; Cruz, Javier; Thangarasu, Pandiyan

doi:10.1016/j.jelechem.2011.01.039

Cited by 63 publications

(19 citation statements)

References 45 publications

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“…The energy gap Δ E is an important parameter for the reactivity of the inhibitor towards adsorption on the metallic surface. The reactivity of the molecule increases as Δ E decreases leading to enhancement of the corrosion inhibition efficiency . HBA has the lowest value of Δ E , indicating its maximal ability to inhibit the corrosion of Al.…”

Section: Resultsmentioning

confidence: 99%

Experimental and computational evaluation of illicium verum as a novel eco‐friendly corrosion inhibitor for aluminium

Ladha

Shah

Ghelichkhah

et al. 2017

Materials & Corrosion

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Illicium verum extract is investigated as a corrosion inhibitor of aluminium in the presence of an acid medium using gravimetric and impedance techniques. The gravimetric results reveal that the adsorption of inhibitor on the metal surface is physisorption. The impedance measurements are used to interpret the electrochemical process occurring at the interface of aluminium and corrosive medium. The surface characteristics of aluminium are evaluated using scanning electron microscopy-energy dispersive X-ray spectroscopy. The percentage composition of chemical constituents present in the extract is obtained using gas chromatographymass spectrometry and E-anethole is found to be the main chemical component. The interaction between the chemical constituents or inhibitor molecules and the metal surface are evaluated using Monte Carlo simulation. The determination of electron density on the inhibitor molecules is performed using density functional theory. The results from this respective study demonstrate good inhibitive properties of the illicium verum extract towards the corrosion of aluminium in concentrated hydrochloric acid solution. K E Y W O R D Saluminium, corrosion inhibition, illicium verum extract, Monte Carlo simulation, electrochemical impedance spectroscopy 1 | INTRODUCTION Aluminium (Al) and its alloys are widely used, in the field of automotive, and aerospace engineering, packaging, and in other mechanical and engineering industries due to their lightweight, low cost, good mechanical strength and corrosion resistive properties. Al is resistant to corrosion due to the formation of stable aluminium oxide protective film over its surface in the presence of oxygen. However, the metal is corrosion resistant for engineering purposes only within the pH range of 4.5-8.5. [1] As the pH range is disturbed above or below this range, the metal undergoes rapid corrosion. During pickling and etching processes, Al comes into contact of acid solution having pH ranging between 1 and 3, which causes significant loss of the metal due to dissolution to form Al +3 . For pH, greater than 8.5, Al dissolves to form [Al(OH) 4 ] − . To reduce the corrosion rate of Al, appropriate inhibitors can be used in the pickling and etching solutions. [2][3][4][5] Inhibitors protect the metal by adsorbing onto the surface to form an adsorbed, dielectric barrier between the metal and the solution. As per the literature, the presence of hetero atoms and π-electrons in an inhibitor molecule is the basic criteria for determining good inhibitor behaviour. [6] There are various experimental findings to support this position, such as studies

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Section: Resultsmentioning

confidence: 99%

Experimental and computational evaluation of illicium verum as a novel eco‐friendly corrosion inhibitor for aluminium

Ladha

Shah

Ghelichkhah

et al. 2017

Materials & Corrosion

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“…This behavior is explained by the fact that the adsorption is somewhat unfavorable with increasing experimental temperature, indicating that the physisorption has the major contribution while the chemisorption has the minor contribution in the inhibition mechanism [42]. (13) and the standard enthalpy of adsorption DH 0 ads can be calculated according to the Van't Hoff equation [43]:…”

Section: Resultsmentioning

confidence: 99%

“…The affectivity of some corrosion inhibitors depends upon the type of material, its properties and the corrosive environment [9,12]. The prevailing environmental conditions would usually determine the mechanism of the inhibitor action [13]. Many mechanisms have been used to try to explain the action of inorganic inhibitors such as chromates and nitrate as well as organic ones.…”

Section: Introductionmentioning

confidence: 99%

Corrosion behavior of AISI 4130 steel alloy in ethylene glycol–water mixture in presence of molybdate

Danaee

Khomami

Attar

2012

Materials Chemistry and Physics

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“…Hereby, the inhibition mechanism of bis(benzimidazole) derivatives on N80 steel surface may be the end product of both chemisorption and physisorption. In the physisorptional progress, the presence of tertiary amino groups existed in inhibitors molecule are easily protonated in acid solution, making these compounds transform the neutral molecule into cations. Hence, bis(benzimidazole) derivatives molecule may easily absorb through electrostatic interactions between the positively charged nitrogen atoms and the negatively charged metal surface as the progress has been previously reported .…”

Section: Resultsmentioning

confidence: 99%

Anti‐corrosion properties of bis(benzimidazole) derivatives for N80 steel in H₂S solution

Liu¹,

Zhang²,

Yin³

et al. 2012

Surface & Interface Analysis

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In this work, we systematically investigated the effect of four bis(benzimidazole) derivatives containing different heteroatoms in molecular structures on inhibiting corrosion of N80 steel in 0.5 mmolÁl À1 H 2 S solution by potentiodynamic polarization, electrochemical impedance spectroscopy and metallographic microscope. The results showed that within the range of 0.1-1.0 mmolÁl À1 , the adsorption of bis(benzimidazole) derivatives on N80 steel surface was found to follow Langmuir adsorption isotherm. Meanwhile, stable adsorbing monolayer between inhibitors and the metal surface was formed, which was confirmed by thermodynamic adsorption parameters (K ads , ΔG 0 ads ). This series of bis(benzimidazole) derivatives exhibited obvious corrosion inhibitory properties for N80 steel. Moreover, they could both slow down the anodic dissolution of iron and the cathodic reduction reaction as mixed type corrosion inhibitors. The optimal inhibition efficiency was obtained for 1,3-bis(benzimidazl-2-yl)-2-thiapropane (BBMS). Hopefully, this series of inhibitors might find applications in anti-corrosion and many other areas.

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A combined electrochemical and theoretical study of N,N′-bis(benzimidazole-2yl-ethyl)-1,2-diaminoethane as a new corrosion inhibitor for carbon steel surface

Cited by 63 publications

References 45 publications

Experimental and computational evaluation of illicium verum as a novel eco‐friendly corrosion inhibitor for aluminium

Experimental and computational evaluation of illicium verum as a novel eco‐friendly corrosion inhibitor for aluminium

Corrosion behavior of AISI 4130 steel alloy in ethylene glycol–water mixture in presence of molybdate

Anti‐corrosion properties of bis(benzimidazole) derivatives for N80 steel in H₂S solution

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A combined electrochemical and theoretical study of N,N′-bis(benzimidazole-2yl-ethyl)-1,2-diaminoethane as a new corrosion inhibitor for carbon steel surface

Cited by 63 publications

References 45 publications

Experimental and computational evaluation of illicium verum as a novel eco‐friendly corrosion inhibitor for aluminium

Experimental and computational evaluation of illicium verum as a novel eco‐friendly corrosion inhibitor for aluminium

Corrosion behavior of AISI 4130 steel alloy in ethylene glycol–water mixture in presence of molybdate

Anti‐corrosion properties of bis(benzimidazole) derivatives for N80 steel in H2S solution

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Anti‐corrosion properties of bis(benzimidazole) derivatives for N80 steel in H₂S solution