Sungkyunkwan University · Materials Science
Professor N.M. El Basiony’s research lab specializes in the design, synthesis, and evaluation of novel organic and surfactant-based corrosion inhibitors for metallic materials, particularly mild steel and carbon steel, in aggressive environments such as acidic solutions and saline water. The lab focuses on understanding the adsorption mechanisms and inhibition efficiency of functionalized molecules—including Schiff bases, zwitterionic, anionic, and cationic surfactants—through electrochemical, spectroscopic, and gravimetric techniques. A key research direction involves correlating molecular structure, especially the presence of heteroatoms, azomethine groups, and tailored hydrophobic chains, with enhanced corrosion protection performance.
Figures are computed from collected data and may differ slightly.
In this work, we report the synthesis of two Schiff bases of substituted gallic acid derivatives <i>via</i> amidation reaction and their characterization using <sup>1</sup>H-NMR spectroscopy to study their inhibition performance on the aggressive attack of HCl on mild steel (MS). The inhibitive performance was examined using chemical (weight loss) and electrochemical (Tafel and EIS) test methods. The results indicate that these derivatives significantly suppress the dissolution rate of mild stee
Two ethoxylated nonionic surfactants (L400 and L600) based on Schiff base are prepared from polyoxyethylene, glyoxalic acid, and phenylenediamine. They are evaluated electrochemically as carbon steel corrosion inhibitors in 1 M HCl by electrochemical impedance spectroscopy (EIS) and Tafel techniques and complemented with microscopic analysis methods. The obtained Tafel data indicate the mixed-type behavior of the inhibitor used. The inhibition efficiency touches the peak at 1 × 10<sup>-4</sup> M
A newly anionic surfactant; namely (2Z,2′Z)-4,4′-(ethane-1,2-diylbis((2-((4-dodecylphenyl)sulfonamido)ethyl)azanedinyl)bis(4-oxobut-2enoate), desined as Tetra-anionic surfactant was synthesized. Its chemical structure was confirmed by FTIR and 1HNMR spectroscopic techniques. The corrosion mitigation behavior of the prepared surfactant for mild steel (MS) in high saline synthetic water was monitoring by chemical technique (weight loss), electrochemical techniques (Tafel and EIS). The obtained res
The inhibitory impact of the two synthesized pyrazole derivatives (<b>3</b> and <b>4</b>) toward metallic and microbial corrosion was investigated. Using open circuit potential, potentiodynamic polarization, and electrochemical impedance spectroscopy, it was possible to determine their ability to prevent the corrosion of C-steel in 1 M HCl, which was significantly enhanced with increasing concentration (ex. 93%). They act as mixed-type inhibitors, according to polarization curves. The compounds
Abstract Designating an organic inhibitor with a specific chemical structure that actively participates in steel protection by increasing adsorption on the steel surface. Based on that, we synthesized three zwitterionic surfactants based on azomethine with different hydrophobic chain lengths labeled ZWSO, ZWSD, and ZWSH. The presence of azomethine group, electrons, and heteroatoms in the zwitterionic surfactant’s amphipathic structure helped to improve C-steel protection. Their inhibitory activi
Abstract Bis ethoxylated cationic surfactant (BOECS) is synthesized. The prepared surfactant’s structure configuration was verified through a variety of spectral and physicochemical techniques, including FT-IR, MS, 1 HNMR, and surface activity evaluations. BOECS applications as a C-steel corrosion inhibitor in 1.0 N HCl and 1.0 N H 2 SO 4 and sulfate reducing bacteria (SRB) mitigations have been investigated thoroughly. Physical properties of the BOECS indicate its potential adsorption affinity
Effective corrosion inhibitors are essential for preventing metal degradation. In this study, a novel polyoxyethylene-based cationic surfactant (ECS) was synthesized and its structure was confirmed using various spectroscopic techniques, including FTIR and ¹H NMR. The ECS exhibits both surface-active and antibacterial properties due to the presence of quaternary ammonium, polyoxyethylene, and alkyl chain moieties, which facilitate its adsorption onto bacterial membranes and carbon steel (C-steel
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