腐蚀
离子液体
材料科学
碳钢
化学工程
溶解度
离子键合
碳纤维
缓蚀剂
无机化学
电化学
冶金
化学
离子
复合材料
物理化学
有机化学
催化作用
电极
工程类
复合数
作者
Fengting Li,Zhikun Wang,Yi Zhou,Lizhi Li,Yueqi Liu,Li Wang,Chunling Li,Huafeng Zhu,Shuangqing Sun,Songqing Hu
标识
DOI:10.1016/j.corsci.2023.111541
摘要
Chemical modification is effective in improving the corrosion inhibition efficiency of carbon dots (CDs) on steel. Here, the imidazolium ionic liquids (IL) modified-CDs (IL-CDs) are synthesized and proved to be mixed-type corrosion inhibitors. The IL increases the pyrrole N content and facilitates the formation of a denser inhibitor film. Molecular simulations confirm that the IL reduces the π-π interaction between CDs, endowing IL-CDs with higher water solubility and better corrosion inhibition effect than CDs. The lower orbital energy gap and larger positive electrostatic potential distribution enable the inhibition efficiency of IL-CDs of 97.11% in 1 M HCl, much superior to CDs (90.80%).
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