Corrosion control of aluminum in the solutions of NaCl, HCl and NaOH using 2,6-dimethylpyridine inhibitor: Experimental and DFT insights

Padash, Rahman; Sajadi, Ghazal Sadat; Jafari, Amir; Jamalizadeh, Effat; Rad, Ali Shokuhi

doi:10.1016/j.matchemphys.2020.122681

Cited by 63 publications

(22 citation statements)

References 69 publications

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“…The redox Al ↔ Al + process is related to the first capacitive loop, which corresponds to R ct,1 in the equivalent circuit and is believed to be the ratedetermining step. 25,34 Also, the fast complementary redox Al + ↔ Al 3+ could be reflected by the second capacitive loop, corresponding to R ct,2 . 28,29 It could be observed that the values of R ct,1 and R ct,2 increase with the addition of the inhibitors, indicating the formation of the protective film.…”

Section: Methodsmentioning

confidence: 99%

Anode Interfacial Layer Construction via Hybrid Inhibitors for High-Performance Al–Air Batteries

Cheng

Wang

Zheng

et al. 2021

ACS Appl. Mater. Interfaces

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The self-corrosion of aluminum anodes is one of the key issues that hinder the development and application of low-cost and high-energy-density Al–air batteries (AABs). Herein, a hybrid corrosion inhibitor combining ZnO and acrylamide (AM) was developed to construct a dense protective interface on the Al anode to suppress the self-corrosion and enhance the electrochemical performance of AABs. Also, the results show that the hydrogen evolution rate with the optimal combination of hybrid inhibitors is 0.0848 mL cm–2 min–1, corresponding to the inhibition efficiency of 78.03%. The integrated AABs with hybrid inhibitors show remarkable capacities of 1240.6 mA h g–1 (25 mA cm–2) and 2444.1 mA h g–1 (100 mA cm–2) and a high power density of 63.7 mW cm–2. This shows that ZnO dissolves into the electrolyte and forms a loose and porous film on the Al surface. When AM is introduced into the ZnO-containing electrolyte, the adsorption of the amide group of AM on the surface of aluminum and ZnO occurs, which not only controls the growth morphology of ZnO but also enables ZnO to easily aggregate into a layer that is in close contact with the anode, efficiently suppressing self-corrosion. This work opens up the prospect of a corrosion inhibition mechanism for ZnO and AM in alkaline solutions and for developing effective organic/inorganic hybrid inhibitors.

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Section: Methodsmentioning

confidence: 99%

Anode Interfacial Layer Construction via Hybrid Inhibitors for High-Performance Al–Air Batteries

Cheng

Wang

Zheng

et al. 2021

ACS Appl. Mater. Interfaces

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“…Inhibitors are used as an effective approach to increase the resistance of metals [1][2][3][4]. In general, copper is resistant to corrosion because of the formation of an oxide layer on its surface; however, the formation of scale and corrosion products is common in aggressive environments such as acidic, basic and saline environments [4]. Thus, to remove scale and corrosion products, acid cleaning is regularly carried out by industry [5].…”

Section: Introductionmentioning

confidence: 99%

Computational approach for predicting the adsorption properties and inhibition of some antiretroviral drugs on copper corrosion in HNO3

et al. 2020

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The use of computational chemistry as an effective means of designing eco-friendly organic corrosion inhibitors has been greatly enhanced by the development of Density Functional Theory (DFT). In this study, the inhibitory activity of four antiretroviral drugs, namely, lamivudine, emtricitabine, didanosine and stavudine, was analyzed by this theory. The quantum chemical parameters/descriptors calculated using DFT at B3LYP/6-31G(d) level were used to explain the mechanism of electron transfer between the inhibitors and the copper surface. The results showed that these compounds adsorb on copper surface. It is important to consider the effect of films formed by the adsorption products. In addition, the Fukui functions and the dual descriptor were used as indicators to locate the electrophilic and nucleophilic attack sites within each compound. Finally, the DFT has enabled to accurately predict the adsorption properties and the good inhibition performance of the molecules in the solution studied.

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“… 9 Solmaz et al examined the inhibition adequacy of H 2 C 2 O 4 acid as a corrosion inhibitor for aluminum in sodium chloride solution (pH 2), using the polarization of resistance ( R p ), PDP, and EIS techniques. 10 Furthermore, 8-HQ, 11 sulfathiazole, 12 monoethanolamine, 13 diisopropyl thiourea, 14 calcium gluconate, 15 3-amino-1,2,4-triazole-5-thiol, 16 4-amino benzenesulfonamide, benzamide (BA), thioacetamide, 17 2,6-dimethylpyridine, 18 octylphosphonic acid, and 2-mercaptobenzimidazole 19 were examined as corrosion inhibitors for aluminum in chloride media.…”

Section: Introductionmentioning

confidence: 99%

Methylenedisalicylic Acid as a Biocorrosion Inhibitor for Aluminum in Concentrated Sodium Chloride Solutions

Ahmed

Sherif

2022

ACS Omega

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3,3′-Methylenedisalicylic acid (MDS) was synthesized and ascertained on the basis of elemental analyses (C, H) and spectral measurements (IR, mass, 1 H NMR, and UV–vis). Moreover, the prepared MDS compound has been assayed for its antimicrobial action against the growth of fungi as well as Gram-positive and Gram-negative bacteria. The results demonstrated the possibility of its usefulness to restrain the growth of both fungi and bacteria, whereas MDS showed its best impact against Candida albicans . The inhibitive impact of MDS on the corrosion of aluminum (Al) in concentrated sodium chloride solution (3.5 wt % NaCl) has been investigated. The corrosion work was done by potentiodynamic cyclic polarization, electrochemical impedance spectroscopy, and chronoamperometric current–time measurements and complemented by scanning electron microscopy and energy-dispersive X-ray investigations. It was found that MDS molecules protect the aluminum against corrosion, and its ability increases with the increase of concentration from 5 × 10 –5 to 1 × 10 –4 M and further to 5 × 10 –4 M. The electrochemical results were supported by the morphological analysis and proved that the presence of MDS inhibits the uniform and pitting corrosion of Al in the chloride solutions.

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Corrosion control of aluminum in the solutions of NaCl, HCl and NaOH using 2,6-dimethylpyridine inhibitor: Experimental and DFT insights

Cited by 63 publications

References 69 publications

Anode Interfacial Layer Construction via Hybrid Inhibitors for High-Performance Al–Air Batteries

Anode Interfacial Layer Construction via Hybrid Inhibitors for High-Performance Al–Air Batteries

Computational approach for predicting the adsorption properties and inhibition of some antiretroviral drugs on copper corrosion in HNO3

Methylenedisalicylic Acid as a Biocorrosion Inhibitor for Aluminum in Concentrated Sodium Chloride Solutions

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