Polyamide composite nanofiltration membrane modified by nanoporous TiO2 interlayer for enhanced water permeability
Polyamide composite nanofiltration membrane modified by nanoporous TiO2 interlayer for enhanced water permeability
复制标题
纳米多孔TiO2夹层改性聚酰胺复合纳滤膜增强透水性
DOI：
10.1016/j.jiec.2022.08.004
复制
发表时间：
2022-09-28
影响因子：
6.1
通讯作者：
Liu, Qinglin
中科院分区：
文献类型：
--
作者：
Chi, Mingzhu;Zheng, Pingyun;Liu, Qinglin
The traditional polyamide composite nanofiltration membrane has high selectivity. However, low water permeability is an important problem to be solved. Herein, the conventional polyamide composite nanofiltration (TFC) membrane was modified with nanoporous TiO2 (nTiO2) interlayer through vacuum-assisted strategy for enhanced water permeability. By tuning the nTiO2 nanoparticles loading, the nTiO2 modified TFC membrane with crumpled structure was fabricated. Besides, the thickness of polyamide layer was reduced due to the hydrophilicity and porosity of nTiO2. Because of the larger effec-tive filtration area and thinner polyamide layer, the modified membrane had a permeability of 12.8 L m-2 h-1 bar-1 (increased by 20.8% than that of TFC membrane) and a rejection of 98.2% when fil-tering Na2SO4 aqueous solution. This work provided a solution for enhanced water permeability and extended the application of TiO2 in the modification of polyamide composite nanofiltration membrane. CO 2022 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
