期刊
JOURNAL OF HAZARDOUS MATERIALS
卷 287, 期 -, 页码 373-383出版社
ELSEVIER
DOI: 10.1016/j.jhazmat.2015.01.057
关键词
Nanofiltration membrane; Positively charged; Silica spheres; Poly (ionic liquid) brushes; Desalination; Wastewater recycling
资金
- National Natural Science Foundation of China [21276244, 21476215, 21106137, 21376225]
- China Postdoctoral Science Foundation [2014T70686, 2013M531684]
- China Scholarship Council (CSC)
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. (C) 2015 Elsevier B.V. All rights reserved.
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