Epoxied SiO2 nanoparticles and polyethyleneimine (PEI) coated polyvinylidene fluoride (PVDF) membrane for improved oil water separation, anti-fouling, dye and heavy metal ions removal capabilities
Epoxied SiO2 nanoparticles and polyethyleneimine (PEI) coated polyvinylidene fluoride (PVDF) membrane for improved oil water separation, anti-fouling, dye and heavy metal ions removal capabilities
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DOI：
10.1016/j.jcis.2022.09.148
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发表时间：
2022-10-17
影响因子：
9.9
通讯作者：
Zhang, Ganwei
中科院分区：
文献类型：
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作者：
Teng, Lei;Yue, Chuan;Zhang, Ganwei
采用环氧化二氧化硅纳米粒子和聚乙烯亚胺(PEI)包覆聚偏氟乙烯(PVDF)膜，以提高膜的抗污染、油水分离、染料和重金属离子去除能力。对改性膜的表征表明，亲水性涂层成功地应用于PVDF基材上。改性膜具有较高的超亲水性和水下超疏油性。结果表明，该膜用于油水分离时，油的截留率可达98%以上。亲水性涂层提高了膜的抗污染性能，经牛血清蛋白溶液(BSA)过滤洗涤后，膜通量恢复率达96.3%。此外，改性膜还具有吸附水中有机染料和重金属离子的能力，并通过过滤将其去除。最重要的是，环氧化的二氧化硅纳米颗粒与PEI之间的交联反应使涂层具有高度的稳定性。由于本报告中描述的涂层的简单制造方法和多功能性能，它可用于修改其他基板。(C)2022爱思唯尔公司版权所有。
Epoxied SiO2 nanoparticles and polyethyleneimine (PEI) was used to coating polyvinylidene fluoride (PVDF) membrane for improved anti-fouling, oil water separation, dye and heavy metal ions removal capabilities. Characterization of the modified membrane revealed that the hydrophilic coating layer was applied onto the PVDF substrate successfully. The modified membrane can exhibit a high degree of superhydrophilicity and underwater superoleophobicity. Consequently over 98% of the oil was retained when this membrane was used in oil water separation. The hydrophilic coating layer enhanced the membrane antifouling performance, and its flux recovery rate reached 96.3% after filtration and washing with bovine serum protein solution (BSA). In addition, the modified membrane presented the ability to adsorb organic dyes and heavy metal ions in water and reject them via filtration. Most impor-tantly, the crosslinking reaction between the epoxied SiO2 nanoparticles and PEI imparts a high degree of stability to the coating layer. Thanks to the simple fabrication method and multifunctional performances of the coating layer described in this report, it may be used to modify other substrates.(c) 2022 Elsevier Inc. All rights reserved.