Engineering high-effective antifouling polyether sulfone membrane with P(PEG-PDMS-KH570)@SiO2 nanocomposite via in-situ sol-gel process
Engineering high-effective antifouling polyether sulfone membrane with P(PEG-PDMS-KH570)@SiO2 nanocomposite via in-situ sol-gel process
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原位溶胶-凝胶法制备P(PEG-PDMS-KH570)@SiO2纳米复合材料高效防污聚醚砜膜
DOI：
10.1016/j.cej.2017.03.105
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发表时间：
2017-08
影响因子：
15.1
通讯作者：
Chen Fengqiu
中科院分区：
文献类型：
--
作者：
Zhang Qinghua;Jiang Jingxian;Gao Fan;Zhang Guangfa;Zhan Xiaoli;Chen Fengqiu
本研究利用原两亲共聚物P（PEG-PDMS-KH570）与sio2纳米粒子（SiO2NPs）结合制备了具有增强防污性能的聚醚砜（PES）纳米复合超滤（UF）膜。在溶胶-凝胶非溶剂诱导相分离（NIPS）法制备PES UF膜的同时，实现了有机无机改性剂P(PEG-PDMS-KH570)@ sio2的富集。共聚物P（PEG-PDMS-KH570）与SiO2NPs之间的相互作用提供了一种稳定有效的PES UF防污膜。表面形貌、化学成分表征和润湿性能测试证实了纳米复合改性剂的偏析和分布。以牛血清白蛋白（BSA）水溶液为模型污染物，研究了纳米复合膜从抗污垢到污垢释放的多重防御机制。改性膜的防污性能，特别是PES/T@SiO2 ~ 4%膜的防污性能得到了有效提高。PES/T@SiO2 ~ 4%膜的通量下降率低至15.6%，通量回收率高达99.0%。此外，改性膜还具有良好的防污稳定性。本研究结果为构建层次化非均质膜表面提供了一种简便的方法，可实现高效水处理中的多重防御机制。
In this work, an original amphiphilic copolymer P(PEG-PDMS-KH570) combined with SiO2nanoparticles (SiO2NPs) was utilized to prepare polyether sulfone (PES) nanocomposite ultrafiltration (UF) membrane with enhanced antifouling performance. The enrichment of the organic-inorganic modifier P(PEG-PDMS-KH570)@SiO2were realized at the same time as the formation of PES UF membrane via sol-gel non-solvent induced phase separation (NIPS) process. The interaction between the copolymer P(PEG-PDMS-KH570) and SiO2NPs furnished a stable and effective antifouling PES UF membrane. Surface morphology, chemical composition characterization and wetting property measurements confirmed the segregation and distribution of the nanocomposite modifier. The multi-defense mechanism from fouling resistance to fouling release of the nanocomposite membranes was investigated by setting bovine serum albumin (BSA) aqueous solution as a model foulant. The antifouling properties of the modified membranes, especially for the PES/T@SiO2∼4% membrane, were effectively improved. The flux decline rate of PES/T@SiO2∼4% membrane was as low as 15.6%, and the flux recover ratio was up to 99.0%. Moreover, the modified membranes also possessed remarkable antifouling stability. Results of this work provide a facile method to construct a hierarchical and heterogeneous membrane surface that could achieve the multi-defense mechanism in efficient water treatment.
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影响因子：
11.9
作者：
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通讯作者：
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影响因子：
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影响因子：
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作者：
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影响因子：
15.1
作者：
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