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Applied Nanoscience

, Volume 9, Issue 8, pp 1991–2000 | Cite as

Superflexible/superhydrophilic PVDF-HFP/CuO-nanosheet nanofibrous membrane for efficient microfiltration

  • Zhi LiuEmail author
  • Rui Cao
  • Anfang Wei
  • Jianghui ZhaoEmail author
  • Jihuan He
Original Article

Abstract

Membrane fouling and poor flexibility plague membrane technology for further application in water treatment. Herein, we introduce a hierarchical superflexible/superhydrophilic poly (vinylidene fluoride-co-hexa-fluoropropylene) (PVDF-HFP)/CuO-nanosheet membrane, which is capable of separating Polystyrene (PS) microspheres (diameter large than 300 nm) with high separation efficiency (higher than 99.89%). Moreover, the resulting membrane maintained 98.10% water flux after 60 min, suggesting excellent anti-fouling property. The anti-fouling property is contributed by the membrane superhydrophilicity, a result of the extreme roughness of CuO-nanosheet and the hydrophilic nature of CuO. Furthermore, the membrane processes outstanding flexibility due to the PVDF-HFP nanofiber backbone, which widens its applicability in practical industrial employment. Therefore, such a membrane with anti-fouling, high separation efficiency, super flexibility, as well as acceptable water flux (2360 ± 50 Lm− 2h− 1, 0.3 bar) and good mechanical properties (stress at break 6.65 MPa and elongation at break 67.35%), makes the membrane a good candidate for practical water microfiltration.

Keywords

Anti-fouling CuO Flexibility Microfiltration Superhydrophilic 

Notes

Acknowledgements

The authors would like to thank the support by Pre-research Project of China National Natural Science Foundation of Anhui Polytechnic University (2019yyzr06), Key Project of Natural Science Research in Colleges and Universities of Anhui Province (KJ2015A022), and Anhui Provincial Natural Science Foundation (1908085QE223).

Supplementary material

Supplementary material 1 (MP4 22012 KB)

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Copyright information

© King Abdulaziz City for Science and Technology 2019

Authors and Affiliations

  1. 1.Key Laboratory of Textile Fabrics, School of Textile and GarmentAnhui Polytechnic UniversityWuhuPeople’s Republic of China
  2. 2.National Engineering Laboratory for Modern Silk, College of Textile and Clothing EngineeringSoochow UniversitySuzhouPeople’s Republic of China

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