Anticorrosion Potential of 4-Amino-3-methyl-1,2,4-triazole-5-thione Derivatives (SAMTT and DBAMTT) on Mild Steel in Hydrochloric Acid Solution

Kumar, M. Saravana; Kumar, Sudhir; Sreekanth, Anandaram

doi:10.1021/ie203022g

Cited by 49 publications

(23 citation statements)

References 34 publications

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“…A large number of these derivatives exhibit diverse biological properties including anticonvulsant, antidepressant, anti‐inflammatory, antibacterial, antifungal and anticancer activity . In the context of potential industrial applications, several 1,2,4‐triazole‐3‐thiones have shown corrosion inhibition of copper and mild steel in chloride media and acidic solutions …”

Section: Introductionmentioning

confidence: 99%

Potent 1,2,4‐Triazole‐3‐thione Radical Scavengers Derived from Phenolic Acids: Synthesis, Electrochemistry, and Theoretical Study

et al. 2016

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Nine 1,2,4-triazole-3-thiones containing phenolic acid moiety have been synthesized and examined by scavenging of stable DPPH (2,2-diphenyl-1-picrylhydrazyl) radical, measurement of reducing capacity, cyclic voltammetry experiments and density functional theory (DFT). The differences in DPPH-radical scavenging activity of the compounds 4 a-i are affected by the sta-bility of the corresponding radicals or radical cations and possibility of delocalization of unpaired electron through benzene and triazole ring. Significantly, lower proton affinity (PA) values than bond dissociation enthalpy (BDE) indicate SPLET (sequential proton loss electron transfer) mechanism under these experimental conditions.[a] N. Ivanović, Dr.

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Section: Introductionmentioning

confidence: 99%

Potent 1,2,4‐Triazole‐3‐thione Radical Scavengers Derived from Phenolic Acids: Synthesis, Electrochemistry, and Theoretical Study

et al. 2016

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“…This is because apart from searching for inhibitors with high efficiency, other factors related to safety and environmental profiles of such chemicals have recently come under severe scrutiny. [11] Benzimidazole is a heterocyclic aromatic compound with a bicyclic structure consisting of the fusion of benzene and imidazole rings, and hydrogen atoms on the rings can be substituted by other groups or atoms. Recently, benzimidazole and its derivatives have received considerable attention because of their good environmental profile and excellent corrosion inhibition performance.…”

Section: Introductionmentioning

confidence: 99%

Surface protection of mild steel using benzimidazole derivatives: experimental and theoretical approach

Obot¹,

Madhankumar²,

Umoren³

et al. 2015

Journal of Adhesion Science and Technology

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Interaction of organic molecules with the surface of metals plays important role in many applications. In particular, surface protective applications need much explanation from both experimental and theoretical point of view. Herein, we have investigated the surface adsorption characteristics and corrosion inhibition behavior of two new benzimidazole derivatives namely 2-(2-Bromophenyl)-1H-benzimidazole (BPBA) and 2-(2-Bromophenyl)-1-methyl-1H-benzimidazole (BPMA) on mild steel in 0.5 M HCl solution using experimental and theoretical approach. Electrochemical and weight loss experiments were used to elucidate the corrosion inhibition potentials of BPBA and BPMA. Attenuated total reflectance-Fourier transform infrared spectroscopy, contact angle, scanning electron microscopy, and X-ray photoelectron spectroscopy measurements were performed to confirm the adsorption of BPBA and BPMA on mild steel surface. Computer simulations were further employed to provide additional insights into the mechanism of interaction between the inhibitors and the steel surface. All the results confirmed that BPMA is a better corrosion inhibitor for mild steel than BPBA in 0.5 M HCl. This new inhibitors could find application industrially during processes such as oil well acidizing for steel protection against corrosion.

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“…ΔG̊ ads values were evaluated using the values of K ads ,. Studies has shown that the ΔG̊ ads values around −20.0 kJmol −1 indicate the electrostatic interaction between the charged species (MS and NSAIDs) i. e., physisorption , while value around −40.0 kJmol −1 or higher encompass charge sharing or transfer between MS and the inhibitor, i. e., chemisorption ,. As in our case the value of ΔG̊ ads lies between −17.0 to −20.0 kJ mol −1 which indicates the adsorption process to be spontaneous, leading to the formation of more stable inhibitor film on MS surface, thereby demonstrating the adsorption to be a straightforward physisorption phenomenon.…”

Section: Resultsmentioning

confidence: 55%

A New Insight into Non‐Steroidal Anti‐Inflammatory Drugs (NSAIDs) as Modulated Green Inhibitory Agent on Mild Steel Corrosion

Patel

Makwana

Shirdhonkar³

2019

ChemistrySelect

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Present study investigate the corrosion inhibition action of green non‐steroidal anti‐inflammatory drugs (NSAIDs) on mild steel (MS) in 1 M HCl by Gravimetric method, Electrochemical Impedance Spectroscopy and Potentiodynamic Tafel polarization at 303.15 K. Changes occurring in the impedance parameters (Rct and Cdl) give clear indication of drug adsorption on the metal surface. Polarization study inferred these drugs to act as a mixed inhibitor. Experimental results inferred a rise in inhibition efficiency with increasing drug concentration. i. e. 90%, 71% and 85% for Aspirin (∼0.3 mM), Diclofenac (∼0.1 mM) and Ibuprofen (∼0.7 mM) respectively. The formation of the Fe‐inhibitor complex and the corrosion inhibition mechanism was inferred by spectral study. Scanning electron microscopy (SEM) and Atomic force microscopy (AFM) gave evidences of the surface topography and proved that the metal surface resist corrosion in presence of inhibitor than in its absence. The degree of hydrophobicity induced due to drug adsorption as obtained by contact angle (CA) is in good agreement with the microscopic results which inferred NSAIDs to act as an effective inhibitor in acidic corrodent. Thermodynamic study confirmed the adsorption process to be spontaneous i. e., ΔG̊ads lies between −17.0 to −20.0 kJ mol−1 which obeyed the Langmuir isotherm. A successive correlation of NSAIDs with their calculated molecular orbital energy levels is well explained using simulation by Density Functional Theory.

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Anticorrosion Potential of 4-Amino-3-methyl-1,2,4-triazole-5-thione Derivatives (SAMTT and DBAMTT) on Mild Steel in Hydrochloric Acid Solution

Cited by 49 publications

References 34 publications

Potent 1,2,4‐Triazole‐3‐thione Radical Scavengers Derived from Phenolic Acids: Synthesis, Electrochemistry, and Theoretical Study

Potent 1,2,4‐Triazole‐3‐thione Radical Scavengers Derived from Phenolic Acids: Synthesis, Electrochemistry, and Theoretical Study

Surface protection of mild steel using benzimidazole derivatives: experimental and theoretical approach

A New Insight into Non‐Steroidal Anti‐Inflammatory Drugs (NSAIDs) as Modulated Green Inhibitory Agent on Mild Steel Corrosion

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