ACS Omega, Journal Year: 2024, Volume and Issue: 9(13), P. 15015 - 15029

Published: March 19, 2024

The effectiveness of a copper(II) complex with Schiff base derived from 2-amino-4-phenyl-5-methylthiazole and salicylaldehyde (APMS) as corrosion inhibitor for XC18 steel in an HCl solution was investigated. Experimental findings indicated slight negative correlation between inhibition efficiencies 1 M temperature but positive both concentration immersion time, respectively. weight loss measurement revealed that APMS achieved maximum rate 92.07% at 303 K. A fitting analysis demonstrated adheres to the Langmuir adsorption isotherm. electrochemical results enhanced inhibitive performance APMS, efficiency increasing concentrations increased, ultimately reaching peak 94.47% 5 × 10–3 mol L–1. Potentiodynamic polarization measurements acted mixed-type without affecting mechanism. Scanning electron microscopy investigations metal surfaces corroborated presence adsorbed organic layer. Advanced theoretical calculations utilizing density functional theory first-principles density-functional tight-binding were conducted gain insights into behavior on surface. derives its advantages crucial inter- intramolecular interactions, resulting formation resilient layer, line experimental findings. It is found APMS-based exhibits significant synergistic effect. current study offers design direction enhancing structural characteristics complexes, laying groundwork multifunctional frameworks minimize rates considerations real-world use cost-efficiency. ability replace harmful, expensive constituents sustainable, cost-effective alternatives represents outcome this study.

Language: Английский