Document Type : Original Article
Authors
1
Department of Chemistry, Faculty of Science (Men’s Campus), Al-Azhar University, Nasr City 11884, Cairo, Egypt. Suez Methanol Derivatives Company, Egyptian Ministry of Petroleum and Mineral Resources, Egypt.
2
Department of Chemistry, Faculty of Science (Men’s Campus), Al-Azhar University, Nasr City 11884, Cairo, Egypt. College of Science and arts, University of Bisha, Al-Namas 61977, P.O. Box 101, Saudi Arabia.
3
Egyptian Petroleum Research Institute (EPRI)
4
Department of Chemistry, Faculty of Science (Men’s Campus), Al-Azhar University, Nasr City 11884, Cairo, Egypt.
5
Surfactant Laboratory, Petrochemical Department; Egyptian Petroleum Research Institute (EPRI);
Abstract
Cationic geminies play an important role nowadays in many industrial applications concerned in protection of eco system (corrosion resistance). The three cationic Gemini surfactants based on amide of succinic acid (OGC, DGC, HGC) were evaluated as anti-corrosive materials for mild steel (MS) in 0.5 mol/L H2SO4 medium. The inhibition efficiencies were evaluated using gravimetric, electrochemical techniques, and computational approaches. The findings showed that HGC was the most effective inhibitor, with an efficacy of 95.25% at 1x10-3 M using EIS measurements. The inhibitors were found to form protective layers on the MS surface, as indicated by modifications in impedance parameters (Cdl, double layer capacitance, and Rct, charge transfer resistance). Thermodynamic and kinetic parameters of adsorption were estimated to elucidate the inhibitive mechanism. AFM images revealed a smoother surface of MS and less corroded area in the presence of the investigated inhibitors compared to their absence. Also this study describes the synthesis of silver Nano particles capped surfactant. Silver Nano structures were characterized using DLS and TEM images.
Overall, the study highlights the potential of these Gemini surfactants as anti-corrosive materials for mild steel. And stabilizers for preparing silver Nano particles capped surfactants.
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