Preparation of carboxylic multiwalled-carbon-nanotube-modified poly(m-phenylene isophthalamide) hollow fiber nanofiltration membranes with improved performance and application for dye removal
Preparation of carboxylic multiwalled-carbon-nanotube-modified poly(m-phenylene isophthalamide) hollow fiber nanofiltration membranes with improved performance and application for dye removal
复制标题
性能改进的羧基多壁碳纳米管改性聚间苯二甲酰间苯二胺中空纤维纳滤膜的制备及其去除染料的应用
DOI：
10.1016/j.apsusc.2018.05.149
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发表时间：
2018
影响因子：
6.7
通讯作者：
Sun Xuefei
中科院分区：
文献类型：
--
作者：
Zhao Changwei;Yang Bin;Han Jinglong;Meng Yunyi;Yu Ling;Hou Deyin;Wang Jun;Zhao Ying;Zhai Yonghong;Wang Shuguang;Sun Xuefei
采用干喷湿纺法制备了羧基多壁碳纳米管（C-MWCNT）改性聚间苯二甲酰间苯二胺（PMIA）中空纤维纳滤膜。将不同含量的C-MWCNTs（0.0675%、0.10%和0.15%）共混到PMIA中以提高C-MWCNTs/PMIA纳滤膜的性能。对C-MWCNTs/PMIA纳滤膜的膜形貌、表面性质和溶质分离性能进行了表征。结果表明，当C-MWCNTs质量分数为0.1%时，制得的C-MWCNTs/PMIA纳滤膜性能最佳，在10 bar压力下，水通量和Na 2SO 4截留率分别达到51 L/（m2 h）和81%。染料去除实验结果表明，该膜对带负电荷较多的直接红23和刚果红有较高的去除率。
Carboxylic multiwalled carbon nanotube (C-MWCNT)-modified poly(m-phenylene isophthal amide) (PMIA) hollow fiber nanofiltration (NF) membranes were fabricated by a dry-jet wet spinning method. Different contents of C-MWCNTs (0.0675%, 0.10% and 0.15%) were blended into the PMIA to enhance the performance of the C-MWCNTs/PMIA NF membranes. The membrane morphology, surface properties and solute separation performances of the C-MWCNTs/PMIA NF membranes were characterized. The results showed the C-MWCNTs/PMIA NF membranes with 0.1% C-MWCNTs exhibited the best performance of the membranes, with the water flux and Na2SO4rejection up to 51 L/(m2h) and 81% at 10 bar, respectively. Results of dye removal experimental showed that the membranes exhibited a higher removal for direct red 23 and congo red with more negative charge.