Imidazole derivatives as efficient and potential class of corrosion inhibitors for metals and alloys in aqueous electrolytes: A review

Ouakki, M.; Galai, M.; Cherkaoui, Mohammed

doi:10.1016/j.molliq.2021.117815

Cited by 66 publications

(14 citation statements)

References 45 publications

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“…Ouakki et al [ 64 ] studied in detail the effect of electron-withdrawing and electron-donating groups on the corrosion inhibition performance of imidazole rings and used the Hammett substituent constant (σ) to describe the electronic effects of the substituents. The Hammett substituent constants of various substituent groups are summarized in Table 3 in which σ m represents the meta substituent constant, and σ p represents the para substituent constant.…”

Section: The Correlation Between Molecular Structure and Corrosion In...mentioning

confidence: 99%

Revealing the Correlation between Molecular Structure and Corrosion Inhibition Characteristics of N-Heterocycles in Terms of Substituent Groups

Tan

Zeng

2023

Materials

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Controlling metal corrosion can directly address the waste of metal and the environmental pollution and resource depletion caused by metal recycling, very significant factors for green and sustainable development. The addition of corrosion inhibitors is a relatively cost-effective means of corrosion prevention. Among these, N-heterocycles have been widely used because heteroatoms contain lone pairs of electrons that can be strongly adsorbed onto metals, protecting them in highly corrosive environments at relatively low concentrations. However, due to the large variety of N-heterocycles, their corrosion inhibition characteristics have seldom been compared; therefore, the selection of appropriate N-heterocycles in the development of anti-corrosion products for specific applications was very difficult. This review systematically analyzed the influence of different substituents on the corrosion inhibition performance of N-heterocycles, including different alkyl chain substituents, electron-donating and electron-withdrawing substituents, and halogen atoms, respectively. The correlation between the molecular structure and corrosion inhibition characteristics of N-heterocycles was comprehensively revealed, and their action mechanism was analyzed deeply. In addition, the toxicity and biodegradability of N-heterocycles was briefly discussed. This study has provided a significant guideline for the development of green, promising corrosion inhibitors for advanced manufacturing and clean energy equipment protection.

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Section: The Correlation Between Molecular Structure and Corrosion In...mentioning

confidence: 99%

Revealing the Correlation between Molecular Structure and Corrosion Inhibition Characteristics of N-Heterocycles in Terms of Substituent Groups

Tan

Zeng

2023

Materials

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“…Generally, corrosion inhibitors containing heteroatoms (such as sulfur, oxygen, nitrogen, and phosphorus) can form a bond with the iron's vacant d orbital via their non-bonding electron pair, preventing metal corrosion by producing a protective layer 4 , 5 . Furthermore, compounds comprising aromatic rings and polar groups (such as C=O, –NH 2 , –OH, etc.)…”

Section: Introductionmentioning

confidence: 99%

Falcaria vulgaris leaves extract as an eco-friendly corrosion inhibitor for mild steel in hydrochloric acid media

Alimohammadi

Ghaderi

Ramazani

et al. 2023

Sci Rep

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Undoubtedly, metal corrosion is one of the most challenging problems faced by industries. Introducing corrosion inhibitors is a reasonable approach to protecting the metal surface. Due to environmental concerns and the toxicity of industrial organic corrosion inhibitors, researchers are continually exploring acceptable replacements. The current study focused on the application of Falcaria Vulgaris (FV) leaves extract to mitigate mild steel (MS) corrosion in a 1 M HCl environment. The polarization findings demonstrated that the corrosion current density decreased from 264.0 µA/cm2 (for the sample submerged in the blank solution) to 20.4 µA/cm2 when the optimal concentration of 800 ppm of FV leaves extract was added to the acid solution. Electrochemical impedance spectroscopy (EIS) analysis revealed an inhibition efficiency of 91.3% at this concentration after 6 h of immersion. It was determined by analyzing several adsorption isotherms that this corrosion inhibitor obeys the Frumkin isotherm. AFM, FE-SEM, and GIXRD surface analyses also supported the findings that adding FV leaves extract can reduce metal damage by adsorption on the metal surface.

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“…10–17 In general, conventional corrosion inhibitors are organic compounds containing hetero atoms (O, N, S, or P) and aromatic rings or long alkyl chains, for example, imidazole, pyrimidine, triazole, guanidine, acridine, Schiff-bases, etc. 9,18–22 Particularly, inhibitor molecule with a relatively larger hydrophobic and conjugated skeleton could resist corrosion more effectively, in terms of surface coverage and electron donor–acceptor interaction with metal atoms. 23–26…”

Section: Introductionmentioning

confidence: 99%

“…[10][11][12][13][14][15][16][17] In general, conventional corrosion inhibitors are organic compounds containing hetero atoms (O, N, S, or P) and aromatic rings or long alkyl chains, for example, imidazole, pyrimidine, triazole, guanidine, acridine, Schiff-bases, etc. 9,[18][19][20][21][22] Particularly, inhibitor molecule with a relatively larger hydrophobic and conjugated skeleton could resist corrosion more effectively, in terms of surface coverage and electron donor-acceptor interaction with metal atoms. [23][24][25][26] Tetraphenylethylene (TPE) bearing a central olen and four peripheral phenyl rings, is a well-known and widely studied AIEgena luminogen possessing the unique character of aggregation-induced emission (AIE).…”

Section: Introductionmentioning

confidence: 99%

Corrosion protection properties of tetraphenylethylene-based inhibitors toward carbon steel in acidic medium

Chen

et al. 2023

RSC Adv.

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Imidazole derivatives as efficient and potential class of corrosion inhibitors for metals and alloys in aqueous electrolytes: A review

Cited by 66 publications

References 45 publications

Revealing the Correlation between Molecular Structure and Corrosion Inhibition Characteristics of N-Heterocycles in Terms of Substituent Groups

Revealing the Correlation between Molecular Structure and Corrosion Inhibition Characteristics of N-Heterocycles in Terms of Substituent Groups

Falcaria vulgaris leaves extract as an eco-friendly corrosion inhibitor for mild steel in hydrochloric acid media

Corrosion protection properties of tetraphenylethylene-based inhibitors toward carbon steel in acidic medium

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