Unravelling the adsorption and anti-corrosion potency of newly synthesized thiazole Schiff bases on C-steel in 1 M HCl: Computational and experimental implementations

作者：Ahmed A. Farag, Arafat Toghan · 发表于：Results in Engineering · 年份：2025 · DOI：10.1016/j.rineng.2025.104504 · 被引用次数：27 · 研究领域：Corrosion Behavior and Inhibition、Concrete Corrosion and Durability、Hydrogen embrittlement and corrosion behaviors in metals

• Methyl-thiazolone-Schiff bases derivatives were synthesized. • In 1 M HCl environment, Methyl-thiazolone derivatives were inspected as inhibitors for C-steel corrosion. • PDP studies revealed that Methyl-thiazolone derivatives functioned as mixed inhibitors. • Adsorption data discovered that the inhibitor followed the Langmuir model. • There is a strong correlation between the theoretical and the experimental approaches. However, steel has many unique properties and advantages that have made it an essential component in industry, construction, and many other engineering fields, but it is greatly affected by the surrounding environment, which leads to its damage. From this point, two brand-new synthezied eco-friendly Schiff base based thiazoles, specifically 2-[(E)-1-(2-Pyridyl)propylideneamino]-5-methyl-5H-1,3-thiazol-4-one ( SCH-1 ) and 2-(Z)-[3-(Methoxymethyl)-1-methyl-1H-pyrazol-4-yl]methylideneamino-5-methyl-5H-1,3-thiazol-4-one ( SCH-2 ) were explored as inhibitors for carbon steel (C-steel) corrosion in 1 M HCl. The anticorrosion capability was practically estimated by electrochemical and chemical measurements. At 303 K, the SCH-1 and SCH-2 compounds exhibit peak inhibition rates of 92.3 % and 93.7 %, respectively. Thermodynamic studies confirmed that the corrosion inhibition resulted from the adsorption of SCH-1 and SCH-2 molecules on the steel surface obeying Langmuir adsorption isotherms with a physicochemical adsorption nature. Studies of thermodynamics verified t...