聚丙烯腈
吸附
静电纺丝
材料科学
纳米纤维
多孔性
化学工程
金属有机骨架
纳米颗粒
电化学
膜
污染物
纳米复合材料
纳米技术
化学
复合材料
聚合物
有机化学
电极
物理化学
工程类
生物化学
作者
Lichong Peng,Xiuling Zhang,Yaxin Sun,Yi Xing,Congju Li
标识
DOI:10.1016/j.envres.2020.109742
摘要
Efficient adsorbents for removal heavy metals are extensively urgent in modern society. Metal-organic frameworks (MOFs) with abundant porosity and tunable structure make it potential to access the advantages of high permeability and adsorbability in water pollutant control. However, MOFs nanoparticles inconvenient to recycle in solution hinder its application in water pollutant treatment. Herein, we report an in-situ growth and large-scalable manufacturing method to fabricate ZIF-8 nanoparticles on electrospun polyacrylonitrile (PAN) nanofibers membrane (ZIF-8/PAN NF) by hot pressing. Consequently, the prepared ZIF-8/PAN NF possesses high loading, uniform dispersion and large-scalable area as well as good flexibility. The fabricated ZIF-8/PAN NF exhibits excellent performance with fast flux (12,000 L/(m2h)) and high filtration efficiency (96.5%) for Cu2+ in dynamic adsorption. Additionally, adsorption and electrochemistry are introduced simultaneously. The Cu2+ removal rate of ZIF-8/PAN NF reaches 34.1% in 4 min with combination of adsorption and electrochemistry. While it is 29.2% for Cu2+ elimination in adsorption. Given the outstanding performance and easy manufacture, this study might bring MOFs powder to eliminate water pollution into practical application.
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