Electrochemical kinetics, molecular dynamics, adsorption and anticorrosion behavior of melatonin biomolecule on steel surface in acidic medium

Ituen, Ekemini; Mkpenie, Victor; Moses, E. A.; Obot, I.B.

doi:10.1016/j.bioelechem.2019.05.005

Cited by 35 publications

(11 citation statements)

References 45 publications

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“…As obtained with impedance and polarization measurements, inhibition efficiency increased as NPs concentration increased. Furthermore, causality factors, CF-2 and CF-3 were obtained and all the values were approximate to theoretical values of 2 and 3 respectively, indicating good quality of measurements [46,47]. The Tafel constants ( a and c ) constants were also obtained, and as observed in PDP results, there was more spread in a than c values, supporting more impact on the anodic than cathodic half reaction.…”

Section: Efmsupporting

confidence: 61%

“…Also, the values are less negative than −40 kJmol −1 indicating physical adsorption mechanism [53]. This involves basically electrostatic interaction between (10) charged species in the inhibitor and the steel surface [47]. Since silver in the NPs is zero-valent, this interaction can possibly occur between the phytoconstituents (capped to the silver) and the steel surface.…”

Section: Kinetics Thermodynamics and Adsorption Mechanistic Studiesmentioning

confidence: 99%

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Green synthesis and anticorrosion effect of Allium cepa peels extract-silver nanoparticles composite in simulated oilfield pickling solution

et al. 2021

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An alternative green approach through which nanoscience/nanotechnology could be applied in the industry is being demonstrated in this study. Ethanol extracts of Allium cepa peels (Et-ACPE) is used to mediate the synthesis of silver nanoparticles (Et-AgNPs) at room temperature. Stable crystalline, monodisperse and non-agglomerated spherical NPs with zeta potential of −46.2 ± 0.1 mV and plasmon absorption at 435 nm are obtained. Silver atoms are predominantly oriented towards the Ag (111) plane in a face centered cubic structure with a = b = c = 4.0968 Å having $$\alpha = \beta = \gamma = 90^\circ$$ α = β = γ = 90 ∘ . The surfaces of the NPs becomes rich in electron cloud due to O atoms supplied by capped phyto-compounds of Et-ACPE. This enhances adsorption potential and more efficient inhibition (up to 90% at 30 °C) of X80 steel corrosion in 1 M HCl solution than using the crude extract. Investigation of corrosion products and morphologies of the steel surface by FTIR, SEM/EDS and AFM techniques reveals efficient surface protection through adsorption of Et-AgNPs facilitated mainly by O and –C = C– sites. Findings prove that the Et-AgNPs is a more efficient and thermally stable alternative ecofriendly anticorrosion additive for industrial cleaning and pickling operations than the crude extract.

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Section: Efmsupporting

confidence: 61%

Section: Kinetics Thermodynamics and Adsorption Mechanistic Studiesmentioning

confidence: 99%

Green synthesis and anticorrosion effect of Allium cepa peels extract-silver nanoparticles composite in simulated oilfield pickling solution

et al. 2021

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“…The MD simulation of DDMIM and BDMIM was implemented in a simulation box with periodic boundary conditions using Material Studio 2017 (Accelrys Inc.). [ 33,34 ] The simulation box consisted of three layers. An iron crystal cleaved along (1 1 0) plane, with a fractional thickness of 6.0, was enlarged to a 14 × 14 supercell to become the base layer.…”

Section: Methodsmentioning

confidence: 99%

Comparative study on two imidazolium‐based ionic liquid surfactants as corrosion inhibitors for N80 steel in 15% hydrochloric acid solution

Qiao

Zeng

2020

Materials & Corrosion

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A comparative study on 1-dodecyl-2,3-dimethylimidazolium chloride ([DDMIM]Cl) and 1-benzyl-3-dodecyl-2-methylimidazol-1-ium chloride ([BDMIM]Cl) as corrosion inhibitors for N80 steel in a 15% hydrochloric acid solution was performed by surface tension tests, electrochemical measurements, weight loss, scanning electron microscopy, atomic force microscopy, and theoretical calculations. The experimental results confirm that [DDMIM]Cl and [BDMIM]Cl act as mixed-type inhibitors. The adsorption of both inhibitors on the N80 steel surface obeys the Langmuir adsorption isotherm, and [BDMIM]Cl exhibits better inhibitive performance, lower critical micelle concentration (CMC), and a lower ratio of saturation adsorption concentration on the steel surface to its own CMC than [DDMIM]Cl. The results of theoretical calculations reveal that the electron-donating/accepting capacities and hydrophobicity of the benzyl substituent in the imidazole ring are essential for preventing steel corrosion in acid media.

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“…K ads is used to predict strength of adsorptive binding and to determine the free energy change of adsorption ( ΔG ads ) according to Eq. 13, given that 55.5 represents concentration of water molecules in the solution and R is the universal gas constant [46].…”

Section: Acid Corrosionmentioning

confidence: 99%

Inhibition of Acid and Bio-corrosion of Pipeline Steel Using Tabersonine: Experimental, DFT and Molecular Dynamics Simulations Approaches

et al. 2020

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Tabersonine (TAB) is demonstrated as ecofriendly new material that inhibits of pipeline steel corrosion in both acid and microbial (Desulfovibrio sp) environments. At 0.85 mg/mL (2.5 mM) minimum inhibitory concentration (MIC), TAB inhibits bio-corrosion induced by the sulphate-reducing bacteria (SRB) with efficiency of 61.9% and 51.9% at 30 °C and 60 °C, respectively. Also, 10.0 mM TAB is 90.8% and 88.1% efficient in inhibiting corrosion of X80 steel in 1 M HCl at 30 °C and 60 °C, respectively. FTIR, SEM/EDS, local selectivity and adsorption studies at computational level confirm that TAB molecules can provide surface protection by spontaneous physical and chemical adsorption on steel surface via O, N and C=C sites. TAB serves as mixed type inhibitor with dominant influence on anodic reaction; its addition to the acid solution reduces surface roughness by 46.7%. Instead of using different materials for mitigation of microbial and acid induced corrosion, TAB can be a cost effective, efficient alternative.

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Electrochemical kinetics, molecular dynamics, adsorption and anticorrosion behavior of melatonin biomolecule on steel surface in acidic medium

Cited by 35 publications

References 45 publications

Green synthesis and anticorrosion effect of Allium cepa peels extract-silver nanoparticles composite in simulated oilfield pickling solution

Green synthesis and anticorrosion effect of Allium cepa peels extract-silver nanoparticles composite in simulated oilfield pickling solution

Comparative study on two imidazolium‐based ionic liquid surfactants as corrosion inhibitors for N80 steel in 15% hydrochloric acid solution

Inhibition of Acid and Bio-corrosion of Pipeline Steel Using Tabersonine: Experimental, DFT and Molecular Dynamics Simulations Approaches

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