Key Laboratory of Eco-environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China.
Key Laboratory of Eco-environments in Three Gorges Reservoir Region (Ministry of Education), School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China.
J Colloid Interface Sci. 2017 Nov 1;505:929-939. doi: 10.1016/j.jcis.2017.06.075. Epub 2017 Jun 23.
Green corrosion inhibitors are of great benefit to the protection of pipes or tanks in seawater systems. The properties of the corrosion inhibitor such as toxicity and anticorrosion performance are closely related to its molecular structure. Some thiazole derivatives are commonly known as food flavors. The influences of two thiazole flavor ingredients on Cu corrosion in NaCl solution were analyzed in this study, namely, 4-methyl-5-vinylthiazole (MVT) and 5-(2-hydroxyethyl)-4-methylthiazole (HMT). Potentiodynamic polarization and electrochemical impedance spectroscopy measurements were employed to evaluate their anti-corrosion abilities. Theoretical calculations were conducted to investigate their possible adsorption modes. The thiazole ring endows the two compounds with the high inhibition performace. However, with a conjugated system, the ethenyl has a more pronounced contribution to electron donation and adsorption ability on the Cu surface than hydroxyethyl group.
绿色缓蚀剂对保护海水系统中的管道或储罐有很大的好处。缓蚀剂的性质，如毒性和耐腐蚀性，与其分子结构密切相关。一些噻唑衍生物通常被称为食品香料。本研究分析了两种噻唑香料成分对 Cu 在 NaCl 溶液中的腐蚀的影响，即 4-甲基-5-乙烯基噻唑（MVT）和 5-（2-羟乙基）-4-甲基噻唑（HMT）。采用动电位极化和电化学阻抗谱测量来评估它们的耐腐蚀能力。进行了理论计算以研究它们可能的吸附模式。噻唑环赋予这两种化合物高的抑制性能。然而，由于共轭体系，乙烯基基团比羟乙基基团对电子给予和在 Cu 表面上的吸附能力有更显著的贡献。
