Pvdf Mixed Matrix Membranes by Incorporation of Ionic Liquid and Mxene for Enhancing Permeation and Antifouling Performance
Aiming to enhance permeation and anti-fouling performance of PVDF membrane, IL/PVDF and MXene-IL/PVDF mixed matrix membranes (MMMs) were fabricated by incorporating 1-hexyl-3-methylimidazolium bis (trifluoromethylsulfonyl) imide ionic liquid (IL) and MXene-IL. The microstructures of IL/PVDF and MXene-IL/PVDF MMMs were characterized by TEM, SEM, FTIR, XRD, and XPS analysis. The performance of the MMMs was evaluated in the dead-end filtration, and results showed that IL addition would increase the pore size and hydrophilicity of IL/PVDF MMMs, thereby enhancing water flux and anti-fouling performance of the MMMs. However, IL would be dissolved out from IL/PVDF MMMs during the filtration process, which would depress the flux recovery rate of the MMMs. For MXene-IL/PVDF MMMs, IL was encapsulated by intercalating into the MXene nanosheets and effectively prevented the loss of IL from Mxene-IL/PVDF MMMs in the running process. MXene-IL/PVDF MMMs had high water flux and antifouling performance, and the maximum flux recovery rate of MXene-IL co-incorporated PVDF MMMs reached 96% after four-cycle filtration, and the corresponding water flux was 129.37 L·m-2·h-1. Compared with PVDF membrane, pure water flux and flux recovery rate of MXene-IL/PVDF mixed matrix membranes increased by 4.37 and 1.83 times, respectively
Year of publication: |
[2022]
|
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Authors: | Chen, Si-ruo ; Wang, Ting ; Zhuo, Xinyi ; Zhang, Yan-ling ; Wu, liguang |
Publisher: |
[S.l.] : SSRN |
Saved in:
freely available
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