Zhang Mengyue, Yang Fan, Wang Nan, Du Jifu, Yan Juntao, Sun Ya, Zhang Manman, Zhao Long
School of Chemical and Environmental Engineering, Wuhan Polytechnic University, Wuhan 430040, China.
State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.
Molecules. 2024 Dec 25;30(1):24. doi: 10.3390/molecules30010024.
The efficient removal of dyes is of significant importance for environmental purification and human health. In this study, a novel material (Si-MPTS-IL) has been synthesized by the immobilization of imidazole ionic liquids (ILs) onto nano-silica using the radiation grafting technique. The adsorption performance of Si-MPTS-IL for Coomassie Brilliant Blue (CBB) removal is studied by a series of static adsorption experiments. It is found that Si-MPTS-IL has ultra-fast adsorption kinetics, reaching equilibrium within 2 min. The adsorption process for CBB conforms to the Langmuir model. In addition, Si-MPTS-IL exhibits a negligible impact on the adsorption efficiency of CBB with the increase in salt concentration. After six cycles of adsorption-desorption, the adsorption efficiency of Si-MPTS-IL remained above 80%, indicating excellent regenerative properties and a promising candidate for the treatment of wastewater containing CBB. A study of the mechanism indicates that the CBB capture by Si-MPTS-IL can be attributed to the synergistic effects of electrostatic interactions and pore filling.
高效去除染料对于环境净化和人类健康具有重要意义。在本研究中，通过辐射接枝技术将咪唑离子液体（ILs）固定在纳米二氧化硅上，合成了一种新型材料（Si-MPTS-IL）。通过一系列静态吸附实验研究了Si-MPTS-IL对考马斯亮蓝（CBB）的吸附性能。发现Si-MPTS-IL具有超快的吸附动力学，在2分钟内达到平衡。CBB的吸附过程符合朗缪尔模型。此外，随着盐浓度的增加，Si-MPTS-IL对CBB的吸附效率影响可忽略不计。经过六个吸附-解吸循环后，Si-MPTS-IL的吸附效率仍保持在80%以上，表明其具有优异的再生性能，是处理含CBB废水的有前途的候选材料。机理研究表明，Si-MPTS-IL对CBB的捕获可归因于静电相互作用和孔隙填充的协同效应。
