Simultaneous electrospinning and spraying toward branch-like nanofibrous membranes functionalised with carboxylated MWCNTs for dye removal
Simultaneous electrospinning and spraying toward branch-like nanofibrous membranes functionalised with carboxylated MWCNTs for dye removal
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DOI：
10.1016/j.matlet.2015.12.024
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发表时间：
2016-03
影响因子：
3
通讯作者：
Jie Shi;Wu Tengfei;Kunyue Teng;Wei Wang;Mingjing Shan;Zhiwei Xu;Hanming Lv;Hui Deng
中科院分区：
文献类型：
--
作者：
Jie Shi;Wu Tengfei;Kunyue Teng;Wei Wang;Mingjing Shan;Zhiwei Xu;Hanming Lv;Hui Deng
基于CS纤维的同步静电纺丝和f-MWCNTs纳米颗粒的喷涂（高压辅助喷涂或电喷雾），开发了枝状羧基化多壁碳纳米管（f-MWCNTs）/壳聚糖（CS）纳米纤维膜，从而为开发具有多级结构和附加功能的复合膜提供了新途径。与原始CS和由f-MWCNTs/CS共混物直接静电纺丝而成的共混f-MWCNTs/CS纳米纤维膜相比，所制备的厚度仅为30μm的枝状纳米纤维膜对亚甲基蓝和甲基橙的截留率显着提高（分别提高约161-166%和80-90%），同时获得高水通量（3543.50和3543.50）。 3757.36 L/m2h，分别）在 0.2 bar 低压下。因此，同步静电纺丝和喷涂工艺为结构化膜的制造开辟了一种创新的替代方案，而不是在废水处理中使用混合工艺。
Branch-like carboxylated MWCNTs (f-MWCNTs)/Chitosan (CS) nanofibrous membranes were developed based on the simultaneous electrospinning of CS fibers and spraying (high-pressure-assisted spraying or electrospraying) of f-MWCNTs nanoparticles, thus highlighting new avenues to the development of composite membranes with multilevel structures and added functionalities. Compared with pristine CS and blending f-MWCNTs/CS nanofibrous membranes which was directly electrospun from f-MWCNTs/CS blends, the as-prepared branch-like nanofibrous membranes at the thickness of only 30 μm displayed significantly improved rejection (improved about 161–166% and 80–90%, respectively) toward both methylene blue and methyl orange, yet attaining high water flux (3543.50 and 3757.36 L/m2h, respectively) at a low pressure of 0.2 bar. Therefore, the simultaneous electrospinning and spraying process has opened up an innovative alternative for the fabrication of structured membranes rather than using blending process in wastewater treatment.