In the view of environmental protection and sustainable development, the application of green effective inhibitors for metal corrosion in industry field is of great significance. In this work, two thiourea functionalized glucosamine derivatives, 5-hydroxy-1-phenyl-4-(1,2,3,4-tetrahydroxybutyl)imidazolidine-2-thione (GA-1) and 1-phenyl-3-(2,4,5-trihydroxy-6-(hydroxymethyl)tetrahydro-2H-pyran-3-yl)thiourea (GA-2), were synthesized as eco-friendly corrosion inhibitors for mild steel (MS) in 1 M HCl solution, and their inhibition performance were evaluated by electrochemical tests and surface analyses. The electrochemical tests and surface analyses indicate that both GA-1 and GA-2 have high inhibition performance. Especially for GA-2, the inhibition efficiency reaches 97.7% with a concentration of 0.64 mM. Theoretical calculations were also conducted to elucidate the adsorption mechanism of GA-1 and GA-2 on MS surface.

从环境保护和可持续发展的角度出发，绿色有效的金属缓蚀剂在工业领域的应用具有重要的意义。在这项工作中，两个硫脲官能化的葡萄糖胺衍生物，5-羟基-1-苯基-4-（1,2,3,4-四羟基丁基）咪唑烷-2-硫酮（GA-1）和1-苯基-3-（2合成了1,4,5-三羟基-6-（羟甲基）四氢-2H-吡喃-3-基）硫脲（GA-2）作为低碳钢（MS）在1 M HCl溶液中的环保型缓蚀剂，通过电化学测试和表面分析评估了它们的抑制性能。电化学测试和表面分析表明，GA-1和GA-2均具有较高的抑制性能。特别是对于GA-2，浓度为0.64 mM时抑制效率达到97.7％。