Recent reviews on quinoline derivatives as corrosion inhibitors

Lavanya, Kandikonda; Saranya, J.; Chitra, S.

doi:10.1515/corrrev-2017-0129

Cited by 25 publications

(7 citation statements)

References 21 publications

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“…Although the effectiveness of 8HQ as a corrosion inhibitor for Mg has resulted in numerous previous and recent related research activities [ 103 , 104 , 105 ], the risk of mutagenicity and chemical instability in light hinders the wide use of 8HQ in commercial applications.…”

Section: Organic Inhibitorsmentioning

confidence: 99%

Chromate-Free Corrosion Protection Strategies for Magnesium Alloys—A Review: Part III—Corrosion Inhibitors and Combining Them with Other Protection Strategies

et al. 2022

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Owing to the unique active corrosion protection characteristic of hexavalent chromium-based systems, they have been projected to be highly effective solutions against the corrosion of many engineering metals. However, hexavalent chromium, rendered a highly toxic and carcinogenic substance, is being phased out of industrial applications. Thus, over the past few years, extensive and concerted efforts have been made to develop environmentally friendly alternative technologies with comparable or better corrosion protection performance to that of hexavalent chromium-based technologies. The introduction of corrosion inhibitors to a coating system on magnesium surface is a cost-effective approach not only for improving the overall corrosion protection performance, but also for imparting active inhibition during the service life of the magnesium part. Therefore, in an attempt to resemble the unique active corrosion protection characteristic of the hexavalent chromium-based systems, the incorporation of inhibitors to barrier coatings on magnesium alloys has been extensively investigated. In Part III of the Review, several types of corrosion inhibitors for magnesium and its alloys are reviewed. A discussion of the state-of-the-art inhibitor systems, such as iron-binding inhibitors and inhibitor mixtures, is presented, and perspective directions of research are outlined, including in silico or computational screening of corrosion inhibitors. Finally, the combination of corrosion inhibitors with other corrosion protection strategies is reviewed. Several reported highly protective coatings with active inhibition capabilities stemming from the on-demand activation of incorporated inhibitors can be considered a promising replacement for hexavalent chromium-based technologies, as long as their deployment is adequately addressed.

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Section: Organic Inhibitorsmentioning

confidence: 99%

Chromate-Free Corrosion Protection Strategies for Magnesium Alloys—A Review: Part III—Corrosion Inhibitors and Combining Them with Other Protection Strategies

et al. 2022

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“…The parameter that determines chemical reactivity and kinetic stability of the molecule is the frontier orbital gap. A small frontier orbital gap defines a molecule with high chemical reactivity, low kinetic stability and more polarisable [72, 73]. The lower the value of E LUMO , the more probable it is that the molecule accepts electrons.…”

Section: Benzimidazoles As Corrosion Inhibitors For Other Metalsmentioning

confidence: 99%

Recent advances in the use of benzimidazoles as corrosion inhibitors

Marinescu

2019

BMC Chemistry

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BackgroundBenzimidazole, a key heterocycle in therapeutic chemistry, and its derivatives, are recently mentioned in the literature as corrosion inhibitors for steels (CS, MS), pure metals (Fe, Al, Cu, Zn) and alloys. Benzimidazoles are good corrosion inhibitors for extremely aggressive, corrosive acidic media such as 1 M HCl, 1 M HNO3, 1.5 M H2SO4, basic media, 0.1 M NaOH or salt solutions. Benzimidazole derivatives act as mixed type inhibitors, exhibiting stronger inhibitive effect on the cathodic reaction than on the anodic one.ConclusionThese review highlights recent research in the field of benzimidazole compounds that their role as corrosion inhibitors, the structure of the compounds, electrochemical studies, the experimental conditions, the proposed mechanisms as well as the quantum theoretical studies that predict the structure of the compounds with inhibition properties.

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“…Thus, the inhibitor molecule containing heteroatoms works as a superior potential barrier and effectively prevents the metal’s surface from corrosion. The organic molecule derived from piperidine, quinolone, triazoles, quinazolinone, pyrimidinone, and so forth is an efficient corrosion inhibitor for mild steel. − Inhibitors based on phosphate-/calcium-ion inhibitor mixture, sol–gel coating materials, decanoic acid, organosilane, benzotriazole, and so forth have been developed for galvanized steel. − However, developing a cost-effective, high corrosion-resistant, nontoxic, and environmentally friendly corrosion inhibitor for galvanized steel is still a highly challenging topic for researchers.…”

Section: Introductionmentioning

confidence: 99%

Functional Pyromellitic Diimide as a Corrosion Inhibitor for Galvanized Steel: An Atomic-Scale Engineering

et al. 2022

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Corrosion of metal/steel is a major concern in terms of safety, durability, cost, and environment. We have studied a cost-effective, nontoxic, and environmentally friendly pyromellitic diimide (PMDI) compound as a corrosion inhibitor for galvanized steel through density functional theory. An atomic-scale engineering through the functionalization of PMDI is performed to showcase the enhancement in corrosion inhibition and strengthen the interaction between functionalized PMDI (F-PMDI) and zinc oxide (naturally existing on galvanized steel). PMDI is functionalized with methyl/diamine groups (inh1 (R = −CH 3 , R′ = −CH 3 ), inh2 (R = −CH 3 , R′ = −CH 2 CH 2 NH 2 ), and inh3 (R = −C 6 H 3 (NH 2 ) 2 , R′ = −CH 2 CH 2 NH 2 ). The corrosion inhibition parameters (e.g., orbital energies, electronegativity, dipole moment, global hardness, and electron transfer) indicate the superior corrosion inhibition performance of inh3 (inh3 > inh2 > inh1). Inh3 (∼182.38 kJ/mol) strongly interacts with ZnO(101̅0) compared to inh2 (∼122.56 kJ/mol) and inh1 (∼119.66 kJ/mol). The superior performance of inh3 has been probed through charge density and density of states. Larger available states of N and H (of inh3) interact strongly with Zn and O surf (of the surface), respectively, creating N–Zn and H–O surf bonds. Interestingly, these bonds only appear in inh3. The charge accumulation on O surf , and depletion on H(s), further strengthens the bonding between inh3 and ZnO(101̅0). The microscopic understanding obtained in this study will be useful to develop low-cost and efficient corrosion inhibitors for galvanized steel.

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Recent reviews on quinoline derivatives as corrosion inhibitors

Cited by 25 publications

References 21 publications

Chromate-Free Corrosion Protection Strategies for Magnesium Alloys—A Review: Part III—Corrosion Inhibitors and Combining Them with Other Protection Strategies

Chromate-Free Corrosion Protection Strategies for Magnesium Alloys—A Review: Part III—Corrosion Inhibitors and Combining Them with Other Protection Strategies

Recent advances in the use of benzimidazoles as corrosion inhibitors

Functional Pyromellitic Diimide as a Corrosion Inhibitor for Galvanized Steel: An Atomic-Scale Engineering

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