Corrosion inhibition property of azomethine functionalized triazole derivatives in 1 mol L−1 HCl medium for mild steel: Experimental and theoretical exploration

Murmu, Manilal; Saha, Sourav Kr.; Bhaumick, Prabhas; Murmu, Naresh Chandra; Hirani, Harish; Banerjee, Priyabrata

doi:10.1016/j.molliq.2020.113508

Cited by 98 publications

(25 citation statements)

References 76 publications

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“…The inhibition efficiencies reached 97% for HST and 81% for TTM based on electrochemical data at 1.0 × 10 −3 M. In addition, the effect of heteroatoms on the corrosion inhibition of structurally similar azomethine-based organic molecules (FMT and TMT) showed that both molecules had good efficiency (>90%) at 5 mmol L −1 concentration in 1.0 M HCl medium. 18 …”

Section: Introductionmentioning

confidence: 99%

Novel triazole derivatives as ecological corrosion inhibitors for mild steel in 1.0 M HCl: experimental & theoretical approach

et al. 2021

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Section: Introductionmentioning

confidence: 99%

Novel triazole derivatives as ecological corrosion inhibitors for mild steel in 1.0 M HCl: experimental & theoretical approach

et al. 2021

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“…On the other words, quantum chemical determinations are strongly acceptable with experimental tests and inhibitors efficiency for both compound are at the order 4FPDC > 2FPDC. The negative value for adsorption energy indicated that the adsorption process between metal surface and inhibitors occurred spontaneously [18]. Additionally, as shown in Table 8, the values of adsorption energy are greater in the presence of aqueous molecules (− 100.5 kcal/mol for 2FPDC and − 110.2 kcal/mol for 4FPDC) than under vacuum environments (− 81.9 kcal/mol for 2FPDC and − 82.6 kcal/mol for 4FPDC).…”

Section: Protonated Inhibitorsmentioning

confidence: 91%

“…These features are assigned in Fig. S2 (B) for 4FPDC as follows: the Ar-H group is located at H (5), H (7), H (9), H (10) which is assigned at peaks with the range δ (ppm), 7.14-7.47; the Ar-NH group is located at H (14) with a peak at δ (ppm), 8.11; the -NH-NH-group is located at H (18), H (20) with peaks at range δ (ppm), 9.38-9.76; the NH 2 group is located at H (23), H (24) with a peak at δ (ppm), 3.35.…”

Section: Characterization Of Inhibitormentioning

confidence: 99%

Corrosion Inhibition Potential of Dithiohydrazodicarbonamide Derivatives for Mild Steel in Acid Media: Synthesis, Experimental, DFT, and Monte Carlo Studies

AlFalah

Kandemi̇rlı

2021

Arab J Sci Eng

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In the present work, new compounds, namely 2-fluoro phenyl-2,5-dithiohydrazodicarbonamide (2FPDC) and 4-fluoro phenyl-2,5-dithiohydrazodicarbonamide (4FPDC), were successfully synthesized and examined as corrosion inhibitors for mild steel in 1 M HCl. The molecular structures were characterized by Fourier transform infrared spectroscopy (FT-IR) and 1 H, 13 C nuclear magnetic resonance (NMR). A scanning electron microscope (SEM), energy-dispersive X-ray spectroscopy (EDX), and atomic force microscope (AFM) were conducted to identify the surface morphology of mild steel in the absence and existence of a corrosion inhibitor. Several electrochemical techniques have been conducted to evaluate inhibitor efficiency. The influence of immersion time on the efficiency of inhibitors was also investigated. The electrochemical results showed that both compounds appeared to be mixed type. However, 4FPDC is slightly more efficient than 2FPDC (97.3% compared with 96.5% at 1 × 10 −2 M and an immersion time of 5 h). The resistance polarization for inhibitors was found to obey an order of 4FPDC > 2FPDC. The Langmuir isotherm system revealed the best match, and the type of adsorption was physisorption and chemisorption in both compounds. SEM and EDX results have confirmed the presence of particles of inhibitor on the metal surface. A smooth surface was observed in the presence of inhibitors approved by AFM. Quantum chemical results showed that the adsorption of molecules of inhibitor takes place predominantly through protonated structures, and strongly agreed with experimental results. The results reveal that excellent inhibition efficiency was attained even in aggressive conditions, and they can be viewed as novel corrosion inhibitors for mild steel with excellent protection. Keywords Materials and Experimental Methods MaterialsA mild steel rod was purchased from a local market with a chemical composition as follows: (Wt.%): 0.18 C,

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“…According to the Nyquist plots, the difference between the lowest and the highest frequencies is called polarization resistance (Rp), which is the sum of the charge transfer resistance, the diffusion resistance and the accumulation resistance. [54][55][56][57]. Rs, R ct and R f are solution resistance, charge transfer resistance and film resistance respectively.…”

Section: Electrochemical Testsmentioning

confidence: 99%

Illuminating of mild steel/HCI interface in the presence of 5-DAT inhibitor

Yerlikaya

Ahmad

Farsak

et al. 2021

Journal of Molecular Liquids

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In this article, a novel and non-toxic Schiff base containing multi-heteroatom coded with the name 5-DAT (5-(4-(diethylamino)benzylidene)amino)-1,3,4-thiadiazole-2-thiol is designed as the corrosion inhibitor for mild steel (MS) in 1.0 M HCl. The structure of Schiff base is illuminated by NMR, FT-IR, UV spectrophotometers and theoretical (Gaussian and Monte Carlo) calculations. Electrochemical techniques were utilized to determine the inhibition efficiency of synthesized Schiff base on mild steel corrosion. The surface of the MS was characterized by scanning electron microscopy. The inhibition talent of the 5-DAT was described by electrochemical impedance spectroscopy, lineer polarization resistance, and potentiodynamic polarization techniques. 5-DAT synthesized in this study showed high A c c e p t e d M a n u s c r i p t 2 efficiency with 98.9% inhibition efficiency since it contains high electron density heteroatoms such as nitrogen, sulfur and many multiple bonds, which are considered as more adsorption centers compared to the previous ones. While 5-DAT shows efficiency at 298K, according to EIS and LPR results, respectively, 98.41, 98.12; It was observed that the efficiency was not lost much with 93.87, 92.86 efficiencies at 328 K. The presence of a 5-DAT film, which is homogeneously dispersed on the surface, protects the metal surface against corrosion.

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Corrosion inhibition property of azomethine functionalized triazole derivatives in 1 mol L−1 HCl medium for mild steel: Experimental and theoretical exploration

Cited by 98 publications

References 76 publications

Novel triazole derivatives as ecological corrosion inhibitors for mild steel in 1.0 M HCl: experimental & theoretical approach

Novel triazole derivatives as ecological corrosion inhibitors for mild steel in 1.0 M HCl: experimental & theoretical approach

Corrosion Inhibition Potential of Dithiohydrazodicarbonamide Derivatives for Mild Steel in Acid Media: Synthesis, Experimental, DFT, and Monte Carlo Studies

Illuminating of mild steel/HCI interface in the presence of 5-DAT inhibitor

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