Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Materials Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, PR China.
Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Materials Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, PR China; State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan 410074, PR China.
J Colloid Interface Sci. 2021 Mar;585:355-367. doi: 10.1016/j.jcis.2020.11.073. Epub 2020 Nov 26.
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.
在环保和可持续发展的背景下，绿色有效金属腐蚀抑制剂在工业领域的应用具有重要意义。在这项工作中，合成了两种硫脲功能化氨基葡萄糖衍生物，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-(2,4,5-三羟基-6-(羟甲基)四氢-2H-吡喃-3-基)硫脲（GA-2），作为环保型缓蚀剂，用于研究在 1 M HCl 溶液中对低碳钢（MS）的缓蚀性能，并通过电化学测试和表面分析对其缓蚀性能进行了评价。电化学测试和表面分析表明，GA-1 和 GA-2 均具有较高的缓蚀性能。特别是 GA-2，其在浓度为 0.64 mM 时的缓蚀效率达到 97.7%。还进行了理论计算，以阐明 GA-1 和 GA-2 在 MS 表面的吸附机理。
