School of Chemical Engineering and Energy, Zhengzhou University, Zhengzhou 450001, PR China.
School of Chemical Engineering and Energy, Zhengzhou University, Zhengzhou 450001, PR China; UNESCO Center for Membrane Science and Technology, School of Chemical Engineering, University of New South Wales, Sydney, NSW 2052, Australia.
J Hazard Mater. 2015 Apr 28;287:373-83. doi: 10.1016/j.jhazmat.2015.01.057. Epub 2015 Jan 28.
Silica spheres modified by poly (ionic liquid) brushes, a novel positively charged nanomaterial is prepared by atom transfer radical polymerization (ATRP). A high flux positively charged loose nanofiltration membrane is fabricated via "blending-phase inversion" method. The morphology structures, hydrophilicity, thermal and mechanical properties, permeation performance of these membranes are investigated in detail. The results reveal that the hybrid membranes have enhanced surface hydrophilicity, water permeability, thermal stability, and mechanical properties. Characterization of membrane separation properties shows that the hybrid membranes possess higher salt permeability and relatively higher rejection for reactive dyes, which may open opportunities for the recycling of reactive dyes wastewater. Moreover, such hybrid membranes have an outstanding operational stability and salts concentration showed little effect on the separation properties.
通过原子转移自由基聚合（ATRP）制备了由聚（离子液体）刷修饰的二氧化硅球，这是一种新型的带正电荷的纳米材料。通过“共混相转化”法制备了高通量带正电荷的疏松纳滤膜。详细研究了这些膜的形态结构、亲水性、热性能和机械性能以及渗透性能。结果表明，杂化膜具有增强的表面亲水性、水透过率、热稳定性和机械性能。膜分离性能的表征表明，杂化膜对活性染料具有较高的盐透过率和相对较高的截留率，这为活性染料废水的回收利用提供了机会。此外，这种杂化膜具有出色的运行稳定性，盐浓度对分离性能的影响很小。
