Understanding of remarkable corrosion combating action of N-(benzo[d] thiazol-2-yl)-1-(2-substituted phenyl) methanimines: Electrochemical, surface and computational approach
Inorganic Chemistry Communications(2024)
摘要
The present study highlights the inspection of corrosion combating potential of four thiazolederived Schiff bases; N-(6-methoxybenzo[d]thiazol-2-yl)-1-phenylmethanimine (MTPM), 1-(2-chlorophenyl)-N-(6-methoxybenzo[d] thiazol-2-yl) methanimine(CMTM), N-(6-methoxybenzo[d]thiazol-2-yl)-1-(2-methoxyphenyl) methanimine (MTMM) and N-(6-methoxybenzo[d]thiazol-2-yl)-1-(2-nitrophenyl)methanimine (MTNM) againstmild steel in 0.5 M H2SO4 with employment of gravimetric, electrochemical, and theoretical studies. The extreme inhibition efficacy of 96.3 % was recorded for MTMM at an ideal concentration of 10.50 x 10-4 M. Investigation delineates the concentration and substituent effect concerning inhibition efficiency.The inclusion of thiazole ring in synthesized structures is considered responsible for the compact protective coating formed as a result of mixed interactions during their adsorption over metal surfaces following Langmuir adsorption curves. Surface investigations; Atomic force microscopy (AFM) and Scanning electron microscopy (SEM) were involved to outline the comparative degradation of mild steel surface when subjected to synthesized inhibitors. X-ray photoelectron spectroscopy (XPS) and Electron dispersive spectroscopy (EDS) evaluated the possible presence of inhibitor's film over mild steel surface. Theoretical examination; Density Functional Theory (DFT) and Molecular Dynamic Simulation (MD) have been acclimated additionally as supporting evidence for experimental results.
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关键词
Corrosion,EIS,AFM,XPS,DFT
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