Schiff’s base with center of symmetry as an effective corrosion inhibitor for mild steel in acid medium: Electrochemical &amp; simulation studies

Guo, Wenshu; Talha, Mohd; Lin, Yuanhua; Kong, Xiangwei

doi:10.1016/j.colsurfa.2021.126234

Cited by 36 publications

(7 citation statements)

References 68 publications

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“…The decrease in the inhibition potency on increase in temperature was observed due to removal of adsorbed inhibitory layer from MS surface. As per literature review, corrosion inhibition studies of MBTC and CBTC is not reported and both inhibitors offered better efficiency than most of the similar type of inhibitors reported in literature 16 – 30 as shown in Table 1 . Therefore the work reported in the present investigation is novel and has potential industrial application.…”

Section: Resultsmentioning

confidence: 88%

“…Because of easy synthesis, high efficiency and low toxicity, Schiff base compounds are good choice in selection of inhibitors and various researchers have used Schiff base compounds as corrosion inhibitor 14 , 15 . The Schiff base compound reported as corrosion inhibitor in literature for MS in HCl medium 16 – 30 are represented in Table 1 .…”

Section: Introductionmentioning

confidence: 99%

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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: 88%

Section: Introductionmentioning

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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show abstract

“…The organic layers were separated and the residue was passed through a silica gel column (petroleum ether/ ethyl acetate = 20/1) after diethyl ether was evaporated. As a result, 4-(2-pyridinyl)-2-acetylene butanol was obtained in a yield of 58.3%, and its structure was confirmed by 1 H NMR and 13 C NMR (see Figure S1 and Figure S2).…”

Section: Synthesis Of 4-(2-pyridinyl)-2-acetylene Butanolmentioning

confidence: 85%

“…Consequently, in the last few decades, there have been many studies focusing on synthetic organic inhibitors for anti-corrosion in acidic solutions. [7][8][9] The most widely used organic inhibitors take the isolated pair electrons of O, N, S, P and π electrons in aromatic rings as their main adsorption centres, such as Mannich bases, 10,11 Schiff bases 12,13 and imidazoline derivatives. 14,15 In addition, a large number of studies have indicated that alkyl alcohol derivatives [16][17][18] and alkyl pyridine [19][20][21] have good corrosion inhibition performance on metals in acidic media.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of alkynyl alcohol derivatives and its corrosion inhibition on N80 steel in 5 M HCl

Tu,

Li,

et al. 2024

Asia-Pacific J Chem Eng

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Alkynyl alcohol derivatives (N‐14) were synthesized by 2‐chloromethyl pyridine, propargyl alcohol and bromotetradecane and the structure was confirmed by 1H NMR, 13C NMR, MS and FTIR. The corrosion inhibition performance was evaluated by weight loss, Tafel polarization, EIS measurements and DFT quantum calculations. The results proved that N‐14 effectively inhibited the acid corrosion of N80 steel. The corrosion inhibition of N‐14 increased with its concentration and decreased with increasing temperature. A maximum of 99.56% inhibition efficiency was achieved using 5 × 10−5 mol/l of N‐14 at 60°C. Thermodynamic parameters showed that the adsorption of N‐14 on N80 steel is spontaneous and exothermic, conforming to Langmuir's adsorption. Electrochemical results showed that N‐14 behaved as a mixed‐type inhibitor. In addition, corrosion products produced on N80 steel surface were researched by SEM, XRD, UV and contact angle. At the same time, the corrosion inhibition mechanism was discussed.

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“…Regarding the concentration effect, results from Table 1 showed that its increase to 600 ppm provided higher efficiencies for all SBs, regardless of the temperature. Such tendency can be related to better coverage of the metallic surface by the existing amount of inhibiting molecules in the medium, preventing aggressive forms of corrosion [28][29][30] .…”

Section: Weight Loss Measurementsmentioning

confidence: 99%

Experimental and Theoretical Studies of Tailor-made Schiff Bases as Corrosion Inhibitors for Carbon Steel in HCl

et al. 2023

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Strong acids used in industrial applications as cleaning, descaling, among others, can severely damage metallic structures, requiring corrosion inhibitors to diminish or avoid these issues. Since many conventional compounds used for this purpose may result in environmental and human health issues, eco-friendly compounds such as Schiff bases have been recently investigated. The synthesis of three novel Schiff bases (SBs) was confirmed by infrared spectroscopy (FTIR) and hydrogen nuclear magnetic resonance ( 1 H-NMR). Weight loss measurements were carried out in 1 M HCl over 303K-333K. Furthermore, the combination of these compounds with a surfactant improved the efficiencies, reaching an efficiency of 93%. Optical and scanning electron microscopies confirmed the reduced roughness and pit depths of carbon steel samples. Density-functional theory calculations for neutral forms of SBs revealed that the geometrical and the energetical parameters are similar for the three studied SBs. The geometrical results exhibited more planar structures of protonated species, improving the chemical and physical interactions between aromatic rings and metallic atoms.

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Schiff’s base with center of symmetry as an effective corrosion inhibitor for mild steel in acid medium: Electrochemical & simulation studies

Cited by 36 publications

References 68 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 of alkynyl alcohol derivatives and its corrosion inhibition on N80 steel in 5 M HCl

Experimental and Theoretical Studies of Tailor-made Schiff Bases as Corrosion Inhibitors for Carbon Steel in HCl

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