College of Chemistry and Chemical Engineering , Chongqing University , Chongqing , China 400044.
College of Pharmacy , Heze University , Heze , Shandong , China 274000.
ACS Appl Mater Interfaces. 2019 Mar 13;11(10):10135-10145. doi: 10.1021/acsami.8b19993. Epub 2019 Feb 28.
This study presents the synthesis of two new bisimidazole-based copoly(ionic liquid)s (PILs) through multistep preparation routes. It is shown that the target PILs can display orderly molecular stacking, and nano- to micro-self-aggregates are yielded in aqueous sulfuric acid solution, which are characterized by various technologies including scanning electron microscopy, transmission electron microscopy, and dynamic light scattering. The studied PIL aggregates show strong chemical adsorption onto the copper surfaces demonstrated by Fourier transform infrared spectroscopy, Raman spectroscopy, and X-ray photoelectron spectroscopy. Furthermore, the anticorrosion performance of the studied PIL aggregates is shown using polarization curves and impedance spectroscopy. As a result, the target PIL aggregates show great corrosion inhibition performance to protect copper in aggressive acid medium.
本研究通过多步制备路线合成了两种新型基于双咪唑的共聚离子液体（PILs）。结果表明，目标 PILs 可以显示有序的分子堆积，并且在硫酸水溶液中生成纳米至微自组装体，这通过扫描电子显微镜、透射电子显微镜和动态光散射等各种技术进行了表征。研究的 PIL 聚集体通过傅里叶变换红外光谱、拉曼光谱和 X 射线光电子能谱显示出对铜表面的强化学吸附。此外，通过极化曲线和阻抗谱研究了研究的 PIL 聚集体的耐腐蚀性能。结果表明，目标 PIL 聚集体在腐蚀性酸介质中对铜具有很好的腐蚀抑制性能。
