Studies on anticorrosive action of synthesized indolines on mild steel in 15% HCl solution

Kumari, Nilam; Paul, Priya Kumari; Gope, Laldeep; Yadav, Mahendra

doi:10.1080/01694243.2016.1263473

Cited by 17 publications

(2 citation statements)

References 37 publications

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“…The higher efficiency of MBTC is because of the presence of electron donor group –OCH 3 , imine, carbonyl groups and heterocyclic rings (Fig. 1 ) which improved the efficiency level in the transfers of unpaired electrons from inhibitor molecules to the vacant d-orbital of Fe, which develops a coordinate-bond and thus slows the rate of corrosion (CR) 45 . The decrease in the inhibition potency on increase in temperature was observed due to removal of adsorbed inhibitory layer from MS surface.…”

Section: Resultsmentioning

confidence: 99%

Electrochemical, surface morphological and computational evaluation on carbohydrazide Schiff bases as corrosion inhibitor for mild steel in acidic medium

Gupta,

Mitra,

Yadav

et al. 2023

Sci Rep

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Anticorrosion and adsorption behaviour of synthesized carbohydrazide Schiff bases, namely (Z)-N′-(4-hydroxy-3-methoxybenzylidene)-6-methyl-2-oxo-4-phenyl-1,2,3,4-tetrahydropyrimidine-5-carbohydrazide(MBTC) and (Z)-N′-(3,4-dichlorobenzylidene)-6-methyl-2-oxo-4-phenyl-1,2,3,4-tetrahydropyrimidine-5-carbohydrazide (CBTC) was examined for mild steel (MS) in 15% HCl medium. The corrosion inhibition study was performed by using gravimetric, thermodynamic, electrochemical and theoretical studies including density functional theory (DFT), molecular dynamic simulation (MDS) and Monte Carlo simulations (MCS). The outcomes in terms of corrosion inhibition efficiency using electrochemical impedance spectroscopy (EIS) method at 303 K and 150 ppm concentration were 96.75% for MBTC and 95.14% for CBTC. Both inhibitors adsorbed on the MS surface through physical as well as chemical adsorption and followed the Langmuir isotherm. The mixed-type nature of both inhibitors was identified by polarization results. Surface analysis was done using FESEM, EDX, AFM and XPS studies and results showed that a protective layer of inhibitor molecules was developed over the surface of MS. The results of DFT, MCS and MDS are in accordance with experimental results obtained by weight loss and electrochemical methods.

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Section: Resultsmentioning

confidence: 99%

Electrochemical, surface morphological and computational evaluation on carbohydrazide Schiff bases as corrosion inhibitor for mild steel in acidic medium

Gupta,

Mitra,

Yadav

et al. 2023

Sci Rep

Self Cite

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show abstract

“…In addition, the value of the almost constant Tafel slopes decreases for the branches according to the table without any change in the shapes of the curves. Which means that the corrosion mechanism occurs unchanged without or in the presence of the inhibitor, that is, the corrosion process is controlled by activation inhibition (Solomon et al, 2019;Kumari et al, 2016).…”

Section: Figurementioning

confidence: 99%

Synthesis and crystal structures of two 1H-benzo[d]imidazole derivatives: DFT and anticorrosion studies, and Hirshfeld surface analysis

Ghichi,

Djedouani,

Hannachid

et al. 2023

Acta Crystallogr C

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The title benzimidazole compounds, namely, 2-(4-methoxynaphthalen-1-yl)-1H-benzo[d]imidazole, C18H14N2O (I) and 2-(4-methoxynaphthalen-1-yl)-1-[(4-methoxynaphthalen-1-yl)methyl]-1H-benzo[d]imidazole ethanol monosolvate, C30H24N2O2·C2H6O (II), were synthesized by the condensation reaction of benzene-1,2-diamine with 4-methoxynaphthalene-1-carbaldehyde in the ratios 1:1 and 1:2, respectively. In I, the mean plane of the naphthalene ring system is inclined to that of the benzimidazole ring by 39.22 (8)°, while in II, the corresponding dihedral angle is 64.76 (6)°. This difference is probably influenced by the position of the second naphthalene ring system in II; it is inclined to the benzimidazole ring mean plane by 77.68 (6)°. The two naphthalene ring systems in II are inclined to one another by 75.58 (6)°. In the crystal of I, molecules are linked by N—H...N hydrogen bonds to form chains propagating along the a-axis direction. Inversion-related molecules are also linked by a C—H...π interaction linking the chains to form layers lying parallel to the ac plane. In the crystal of II, the disordered ethanol molecule is linked to the molecule of II by an O—H...N hydrogen bond. There are a number of C—H...π interactions present, both intra- and intermolecular. Molecules related by an inversion centre are linked by C—H...π interactions, forming a dimer. The dimers are linked by further C—H...π interactions, forming ribbons propagating along the b-axis direction. The interatomic contacts in the crystal structures of both compounds were explored using Hirshfeld surface analysis. The molecular structures of I and II were determined by density functional theory (DFT) calculations at the M062X/6-311+g(d) level of theory and compared with the experimentally determined molecular structures in the solid state. Local and global reactivity descriptors were computed to predict the reactivity of the title compounds. Both compounds were shown to exhibit significant anticorrosion properties with respect to iron and copper.

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Synthesized novel carbon dots as green corrosion inhibitor for mild steel in hydrochloric acid: Gravimetric, electrochemical and morphological studies

Mehta

Gupta

Yadav

2023

Diamond and Related Materials

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Studies on anticorrosive action of synthesized indolines on mild steel in 15% HCl solution

Cited by 17 publications

References 37 publications

Electrochemical, surface morphological and computational evaluation on carbohydrazide Schiff bases as corrosion inhibitor for mild steel in acidic medium

Electrochemical, surface morphological and computational evaluation on carbohydrazide Schiff bases as corrosion inhibitor for mild steel in acidic medium

Synthesis and crystal structures of two 1H-benzo[d]imidazole derivatives: DFT and anticorrosion studies, and Hirshfeld surface analysis

Synthesized novel carbon dots as green corrosion inhibitor for mild steel in hydrochloric acid: Gravimetric, electrochemical and morphological studies

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