Innovative characterization of original green vanillin-derived Schiff bases as corrosion inhibitors by a synergic approach based on electrochemistry, microstructure, and computational analyses

Fernandes, Caio Machado; Pina, Vitória G. S. S.; Alfaro, Claudia González; Sampaio, Marcelo T. G. de; Massante, Fernanda Franco; Álvarez, Leonardo X.; Barrios, Adriana M.; Silva, Júlio César M.; Alves, Odivaldo C.; Briganti, Matteo; Totti, Federico; Ponzio, Eduardo A.

doi:10.1016/j.colsurfa.2022.128540

Cited by 31 publications

(5 citation statements)

References 137 publications

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“…They reported that the inhibition efficiency varied between 84-96% according to the length of the ethylene oxide chain contained in the inhibitor [25]. Fernandes et al reported that the efficiencies of three vanillin derived Schift bases for mild steel in 1 M HCl were 82.2%, 83.1%, and 93.1% [26]. Lotto et al reported that the rosemary extract (Rosmarinus officinalis) with added vanillin exhibited 95.63% inhibition efficiency for mild steel in 1 M HCl [27].…”

Section: Discussionmentioning

confidence: 99%

“…One of these compounds is vanillin, a non-toxic phenolic aldehyde. In the literature, studies have been conducted in which vanillin and its derivatives have been investigated as green corrosion inhibitors on various metals due to their advantages such as safe use and high solubility in water [23][24][25][26][27][28]. It has been reported in the literature that in protecting mild steel from corrosion, phenolic compound types in walnut such as vanillic acid are adsorbed on the surface of steel due to their negative charges.…”

Section: Extraction Of Walnut Shellsmentioning

confidence: 99%

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The Effect of the Oğuzlar Walnut Extract as a Green Corrosion Inhibitor on AISI 1010 Mild Steel

Okutan

Asan

SİNGER

2023

Hittite Journal of Science and Engineering

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Mild steel is primarily used in reinforced concrete structures, because it has a low corrosion rate due to the formation of a passive oxide film in the alkaline environment. However, when exposed to acidic and atmospheric environments or aqueous environments containing dissolved salts such as sea water, the protective film deteriorates and corrosion occurs due to contamination caused by chloride and carbonation. It is possible to obtain corrosion inhibitors by extraction of bioactive compounds from plants. Thus, inexpensive and environmentally friendly new effective inhibitors are obtained as an alternative to environmentally harmful inhibitors. In this context, the subject of the study was determined as the investigation of the inhibition efficiency of the vanillin phenolic compound in the Çorum Oğuzlar walnut shell extract, which is a local product, on the corrosion of AISI 1010 mild steel in acidic, alkaline and salty environments. The walnut shells, which were cleaned, ground and pre-sieved with a certain grain size, were extracted in seven different solvents. In order to find the appropriate solvent, the total phenolic content (TPC) in the extracts was determined by both the Folin Ciocalteu method and the liquid chromatography-mass spectrometry/mass spectrometry (LC-MS/MS) system. Cyclic voltammetry (CV) and Tafel polarization methods were applied to determine the effect of the extract on the electrochemical behavior of AISI 1010 and its corrosion rate. LC-MS/MS analysis showed the presence of compounds containing p electrons, N and O heteroatoms responsible for the corrosion inhibition. The best inhibition effectiveness was obtained with 86.1% acetone-water mixture in acidic environment (0.2 M HCl).

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Section: Discussionmentioning

confidence: 99%

Section: Extraction Of Walnut Shellsmentioning

confidence: 99%

The Effect of the Oğuzlar Walnut Extract as a Green Corrosion Inhibitor on AISI 1010 Mild Steel

Okutan

Asan

SİNGER

2023

Hittite Journal of Science and Engineering

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“…By reacting different primary amines with vanillin, a natural nontoxic compound, Fernandes and coworkers [44] synthesized three imines as corrosion inhibitors, namely VTRIS, VCNG, and VTOS (Figure 4). The synthetic approach involved a single-step protocol employing low-toxicity solvent and reagents with excellent atomic efficiency and allowed the recovery of almost 87% of the solvent used in every reaction.…”

Section: Schiff Basesmentioning

confidence: 99%

Synthetic Organic Molecules as Metallic Corrosion Inhibitors: General Aspects and Trends

Lessa

2023

Organics

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Organic molecules are gaining special attention over the last years in the corrosion area thanks to their general low achievable cytotoxicity, structural versatility, and environmentally friendly obtainment methods. Under those approaches, synthetic organic motifs have attracted the interest of researchers due to their variated methods of obtention through molecular manipulation via diverse chemical reactions, allowing the production of adequately planned structures or repurposing their original application in the case of drugs. This review summarizes general aspects that are desired in organic molecules as corrosion inhibitors, presenting selected works published in the 2022–2023 period and emphasizing the importance of finding novel and different organic corrosion inhibitors. Patents were not considered in this review. Scifinder, Google Scholar, and Web of Science were employed as databases. Mathematical and analytical methods involved in the search for corrosion inhibitors are out of this review’s scope.

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“…22–24 Recent research showed a tremendous increase in the use of Schiff base derivatives as corrosion inhibitors for metals including steel, aluminum, and copper in very acidic environments. 25–29 Schiff bases can be easily prepared using extremely cheap starting materials and have little toxicity; therefore, they are becoming increasingly popular as corrosion inhibitors. 30…”

Section: Introductionmentioning

confidence: 99%

“…[22][23][24] Recent research showed a tremendous increase in the use of Schiff base derivatives as corrosion inhibitors for metals including steel, aluminum, and copper in very acidic environments. [25][26][27][28][29] Schiff bases can be easily prepared using extremely cheap starting materials and have little toxicity; therefore, they are becoming increasingly popular as corrosion inhibitors. 30 The aforementioned factors encouraged us to synthesize a melamine-isatin Schiff base and to evaluate the thermodynamic factors affecting its adsorption, namely, 3,3 ′ ,3 ′′ -((1,3,5triazine-2,4,6-triyl)tris(azaneylylidene))tris(indolin-2-one) (MISB), on the surface of mild steel in an acidic environment using weight loss measurements, electrochemical techniques, surface morphology and computational studies.…”

Section: Introductionmentioning

confidence: 99%

Melamine–isatin tris Schiff base as an efficient corrosion inhibitor for mild steel in 0.5 molar hydrochloric acid solution: weight loss, electrochemical and surface studies

et al. 2023

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Innovative characterization of original green vanillin-derived Schiff bases as corrosion inhibitors by a synergic approach based on electrochemistry, microstructure, and computational analyses

Cited by 31 publications

References 137 publications

The Effect of the Oğuzlar Walnut Extract as a Green Corrosion Inhibitor on AISI 1010 Mild Steel

The Effect of the Oğuzlar Walnut Extract as a Green Corrosion Inhibitor on AISI 1010 Mild Steel

Synthetic Organic Molecules as Metallic Corrosion Inhibitors: General Aspects and Trends

Melamine–isatin tris Schiff base as an efficient corrosion inhibitor for mild steel in 0.5 molar hydrochloric acid solution: weight loss, electrochemical and surface studies

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