title: High flux, positively charged loose nanofiltration membrane by blending with poly (ionic liquid) brushes grafted silica spheres.
abstract: 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.
authors: School of Chemical Engineering and Energy, Zhengzhou University, Zhengzhou 450001, PR China.
authors: Liang
authors: L
authors: Yu
authors: 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. Electronic address: zhangyatao@zzu.edu.cn.
authors: Yatao
authors: Y
authors: Zhang
authors: School of Chemical Engineering and Energy, Zhengzhou University, Zhengzhou 450001, PR China.
authors: Yuanming
authors: Y
authors: Wang
authors: School of Chemical Engineering and Energy, Zhengzhou University, Zhengzhou 450001, PR China.
authors: Haoqin
authors: H
authors: Zhang
authors: School of Chemical Engineering and Energy, Zhengzhou University, Zhengzhou 450001, PR China. Electronic address: liujindun@zzu.edu.cn.
authors: Jindun
authors: J
authors: Liu
mesh_terms: D004396:Coloring Agents / Q000737:chemistry; D005374:Filtration; D057927:Hydrophobic and Hydrophilic Interactions; D007474:Ion Exchange; D052578:Ionic Liquids / Q000737:chemistry*; D008567:Membranes, Artificial; D054118:Nanospheres / Q000737:chemistry*; D010539:Permeability; D011108:Polymers / Q000737:chemistry*; D012492:Salts / Q000737:chemistry; D012822:Silicon Dioxide / Q000737:chemistry*; D013499:Surface Properties; D014865:Waste Disposal, Fluid / Q000295:instrumentation / Q000379:methods; D014867:Water / Q000737:chemistry; D014874:Water Pollutants, Chemical / Q000737:chemistry
chemical_list: D004396:Coloring Agents; D052578:Ionic Liquids; D008567:Membranes, Artificial; D011108:Polymers; D012492:Salts; D014874:Water Pollutants, Chemical; D014867:Water; D012822:Silicon Dioxide
keywords: Desalination; Nanofiltration membrane; Poly (ionic liquid) brushes; Positively charged; Silica spheres; Wastewater recycling