Synthesis of positively charged polyelectrolyte multilayer membranes for removal of divalent metal ions
Synthesis of positively charged polyelectrolyte multilayer membranes for removal of divalent metal ions
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用于去除二价金属离子的带正电聚电解质多层膜的合成
DOI：
10.1557/jmr.2013.126
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发表时间：
2013-06
影响因子：
2.7
通讯作者：
Ji, Shulan
中科院分区：
文献类型：
--
作者：
Guo, Hongxia;Du, Ziang;Zhang, Guojun;Ji, Shulan
聚阳离子和聚阴离子在多孔基底上的交替逐层（LbL）沉积是用于形成高通量纳滤膜（NF）的方便且通用的方法。在这项工作中，正电荷的纳滤膜的制备聚乙烯亚胺（PEI）和聚（4-苯乙烯磺酸钠）（PSS）的改性聚丙烯腈超滤基板的LbL组装。通过zeta电位表征了各层的电荷变化。用ATR-FTIR、SEM、N_2吸附和双层膜的重量变化证实了聚电解质的LbL沉积。同时考察了所制备的双层膜的纳滤膜性能和溶质浓度。zeta电位结果表明，整个多层膜的正电荷呈现周期性变化。NF结果表明，随着双层膜层数的增加，膜对Ni^2+和Cd^2+的截留率增加，而渗透通量降低。当渗透通量分别为19.02、19.72、24.02和21.19 L/m^2·h时，对CuSO_4、ZnSO_4、NiCl_2和CdCl_2的截留率分别为98.02%、95.53%、95.66%和94.9%，沿着。
Alternating layer-by-layer (LbL) deposition of polycations and polyanions on porous substrates is a convenient and versatile method for forming high-flux nanofiltration (NF) membranes. In this work, positively charged NF membranes were fabricated by the LbL assembly of poly(ethyleneimine) (PEI) and poly(sodium 4-styrenesulfonate) (PSS) on the modified polyacrylonitrile ultra-filtration substrate. The charge variation with each layer was characterized by zeta potential. ATR-FTIR, SEM, N_2 adsorption and the weight changes with bi-layers were used to confirm the LbL deposition of the polyelectrolytes. NF performances of the prepared membrane with a number of bi-layers as well as solute concentrations were also investigated. The results of zeta potential showed that the whole multilayer films exhibited periodic variations in positive charge. NF results indicated that the rejection of Ni^2+ and Cd^2+ ions increased, while the permeate fluxes decreased with the number of bi-layers. And the rejections of the metal ion solutes were 98.02% for CuSO_4, 95.53% for ZnSO_4, 95.66% for NiCl_2, 94.9% for CdCl_2, along with permeation fluxes of 19.02, 19.72, 24.02, and 21.19 L/m^2·h, respectively.
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影响因子：
9.5
作者：
Peeters, JMM;Boom, JP;Strathmann, H
通讯作者：
Strathmann, H
影响因子：
9.9
作者：
A. Fane;A. Yeo;A. Law;K. Parameshwaran;F. Wicaksana;V. Chen
通讯作者：
A. Fane;A. Yeo;A. Law;K. Parameshwaran;F. Wicaksana;V. Chen
影响因子：
15.1
作者：
Murthy, Z. V. R.;Chaudhari, Latesh B.
通讯作者：
Chaudhari, Latesh B.
影响因子：
9.5
作者：
Naixin Wang;Guojun Zhang;S. Ji;Zhen-ping Qin;Zhong-zhou Liu
通讯作者：
Naixin Wang;Guojun Zhang;S. Ji;Zhen-ping Qin;Zhong-zhou Liu
影响因子：
8.6
作者：
D. M. S. and;M. Bruening
通讯作者：
D. M. S. and;M. Bruening