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Progress in Synthetic Corrosion Inhibitors in Organic Chemistry
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Progress in Synthetic Corrosion Inhibitors in Organic Chemistry

A special issue of Molecules (ISSN 1420-3049). This special issue belongs to the section "Electrochemistry".

Deadline for manuscript submissions: closed (30 November 2023) | Viewed by 6816

Special Issue Editors

Prof. Dr. Mumtaz Ahmad Quraishi

E-Mail Website
Guest Editor
Interdisciplinary Research Center for Advanced Materials, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia
Interests: organic corrosion inhibitors; green chemistry; corrosion inhibition; synthetic corrosion inhibitors
Dr. Chandrabhan Verma

E-Mail Website
Guest Editor
Interdisciplinary Research Center for Advanced Materials, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia
Interests: green corrosion inhibition; green chemistry
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The use of organic corrosion inhibitors has been verified as the simplest and cheapest way for corrosion protection and prevention in various electrolytic media. The implementation of synthetic organic corrosion inhibitors has gained particular attention because of their high surface coverage, high inhibition efficiency, cost-effectiveness, and ease of synthesis. In view of this, the use of synthetic organic corrosion inhibitors for metals or alloys from corrosion for different industrial and academic purposes has advanced. The present Special Issue describes the collection of recent progress in the development of synthetic organic corrosion inhibitors. Many synthetic organic corrosion inhibitors are currently being used to minimize corrosive damage. Using organic corrosion inhibitors, the cost of corrosion can be reduced by up to 15–35%. The present Special Issue is intended to cover the fundamental characteristics of organic corrosion inhibitors, chronological growths, and their industrial applications, as well as offer an overview of corrosion, corrosion monitoring of synthetic organic compounds, comparison of organic and inorganic corrosion inhibitors, and alcohol-, amine-, carbonyl-, ether-, imidazole-, pyridine-, quinoline-, indole-, carbohydrate-, amino-acid-, ionic-liquid-, carbon-nanotube-, G- and GO-, and synthetic organic polymers-based corrosion inhibitors.

Prof. Dr. Mumtaz Ahmad Quraishi
Dr. Chandrabhan Verma
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Molecules is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2700 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • synthetic corrosion inhibitors
  • heterocyclic corrosion inhibitors
  • green corrosion inhibitors
  • MW/US-derived corrosion inhibitors
  • ionic liquid corrosion inhibitors
  • organic corrosion inhibitors
  • carbon allotropes corrosion inhibitors
  • semisynthetic corrosion inhibitors (natural product derivatives)
  • synthetic organic polymers

Published Papers (3 papers)

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Research

23 pages, 20060 KiB  
Article
A Superior Corrosion Protection of Mg Alloy via Smart Nontoxic Hybrid Inhibitor-Containing Coatings
by Andrey S. Gnedenkov, Valeriia S. Filonina, Sergey L. Sinebryukhov and Sergey V. Gnedenkov
Molecules 2023, 28(6), 2538; https://doi.org/10.3390/molecules28062538 - 10 Mar 2023
Cited by 31 | Viewed by 1842
Abstract
The increase of corrosion resistance of magnesium and its alloys by forming the smart self-healing hybrid coatings was achieved in this work in two steps. In the first step, using the plasma electrolytic oxidation (PEO) treatment, a ceramic-like bioactive coating was synthesized on [...] Read more.
The increase of corrosion resistance of magnesium and its alloys by forming the smart self-healing hybrid coatings was achieved in this work in two steps. In the first step, using the plasma electrolytic oxidation (PEO) treatment, a ceramic-like bioactive coating was synthesized on the surface of biodegradable MA8 magnesium alloy. During the second step, the formed porous PEO layer was impregnated with a corrosion inhibitor 8-hydroxyquinoline (8-HQ) and bioresorbable polymer polycaprolactone (PCL) in different variations to enhance the protective properties of the coating. The composition, anticorrosion, and antifriction properties of the formed coatings were studied. 8-HQ allows controlling the rate of material degradation due to the self-healing effect of the smart coating. PCL treatment of the inhibitor-containing layer significantly improves the corrosion and wear resistance and retains an inhibitor in the pores of the PEO layer. It was revealed that the corrosion inhibitor incorporation method (including the number of steps, impregnation, and the type of solvent) significantly matters to the self-healing mechanism. The hybrid coatings obtained by a 1-step treatment in a dichloromethane solution containing 6 wt.% polycaprolactone and 15 g/L of 8-HQ are characterized by the best corrosion resistance. This coating demonstrates the lowest value of corrosion current density (3.02 × 10−7 A cm−2). The formation of the hybrid coating results in the corrosion rate decrease by 18 times (0.007 mm year−1) as compared to the blank PEO layer (0.128 mm year−1). An inhibitor efficiency was established to be 83.9%. The mechanism of corrosion protection of Mg alloy via smart hybrid coating was revealed. Full article
(This article belongs to the Special Issue Progress in Synthetic Corrosion Inhibitors in Organic Chemistry)
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24 pages, 8241 KiB  
Article
Coco Monoethanolamide Surfactant as a Sustainable Corrosion Inhibitor for Mild Steel: Theoretical and Experimental Investigations
by Richika Ganjoo, Shveta Sharma, Praveen K. Sharma, O. Dagdag, Avni Berisha, Eno E. Ebenso, Ashish Kumar and Chandrabhan Verma
Molecules 2023, 28(4), 1581; https://doi.org/10.3390/molecules28041581 - 7 Feb 2023
Cited by 16 | Viewed by 2720
Abstract
Recent studies indicate that surfactants are a relatively new and effective class of corrosion inhibitors that almost entirely meet the criteria for a chemical to be used as an aqueous phase corrosion inhibitor. They possess the ideal hydrophilicity to hydrophobicity ratio, which is [...] Read more.
Recent studies indicate that surfactants are a relatively new and effective class of corrosion inhibitors that almost entirely meet the criteria for a chemical to be used as an aqueous phase corrosion inhibitor. They possess the ideal hydrophilicity to hydrophobicity ratio, which is crucial for effective interfacial interactions. In this study, a coconut-based non-ionic surfactant, namely, coco monoethanolamide (CMEA), was investigated for corrosion inhibition behaviour against mild steel (MS) in 1 M HCl employing the experimental and computational techniques. The surface morphology was studied employing the scanning electron microscope (SEM), atomic force microscope (AFM), and contact measurements. The critical micelle concentration (CMC) was evaluated to be 0.556 mM and the surface tension corresponding to the CMC was 65.28 mN/m. CMEA manifests the best inhibition efficiency (η%) of 99.01% at 0.6163 mM (at 60 °C). CMEA performs as a mixed-type inhibitor and its adsorption at the MS/1 M HCl interface followed the Langmuir isotherm. The theoretical findings from density functional theory (DFT), Monte Carlo (MC), and molecular dynamics (MD) simulations accorded with the experimental findings. The MC simulation’s assessment of CMEA’s high adsorption energy (−185 Kcal/mol) proved that the CMEA efficiently and spontaneously adsorbs at the interface. Full article
(This article belongs to the Special Issue Progress in Synthetic Corrosion Inhibitors in Organic Chemistry)
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15 pages, 4010 KiB  
Article
Preparation and Characterization of Water-borne Polyurethane Based on Benzotriazole as Pendant Group with Different N-Alkylated Chain Extenders and Its Application in Anticorrosion
by Aamna Bibi, Ethan Tsai, Yun-Xiang Lan, Kung-Chin Chang and Jui-Ming Yeh
Molecules 2022, 27(21), 7581; https://doi.org/10.3390/molecules27217581 - 4 Nov 2022
Viewed by 1503
Abstract
A series of novel anti-corrosive coatings were synthesized successfully. Water-borne polyurethane (WPU) was synthesized using polyethylene glycol and modified by grafting benzotriazole (BTA) as a pendant group (WPU-g-BTA) and N-alkylated amines (ethylene diamine (A), diethylene triamine (B), triethylene tetramine (C)) as side-chain extenders. [...] Read more.
A series of novel anti-corrosive coatings were synthesized successfully. Water-borne polyurethane (WPU) was synthesized using polyethylene glycol and modified by grafting benzotriazole (BTA) as a pendant group (WPU-g-BTA) and N-alkylated amines (ethylene diamine (A), diethylene triamine (B), triethylene tetramine (C)) as side-chain extenders. Fourier-transform infrared spectroscopy, thermogravimetry, and dynamic mechanical analyses were used to characterize the structural and thermomechanical properties of the samples. A gas permeability analyzer (GPA) was used to evaluate molecular barrier properties. The corrosion inhibition performance of WPU-g-BTA-A, WPU-g-BTA-B, and WPU-g-BTA-C coatings in 3.5 wt% NaCl solution was determined by electrochemical measurements. WPU-g-BTA-C coating synthesized with a high cross-linking density showed superior anticorrosive performance. The as-prepared coatings exhibited a very low icorr value of 0.02 µA.cm−2, a high Ecorr value of −0.02 V, as well as excellent inhibition efficiency (99.972%) and impedance (6.33 Ω) after 30 min of exposure. Full article
(This article belongs to the Special Issue Progress in Synthetic Corrosion Inhibitors in Organic Chemistry)
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