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A Scalable Method toward Superhydrophilic and Underwater Superoleophobic PVDF Membranes for Effective Oil/Water Emulsion Separation
Abstract
A superhydrophilic and underwater superoleophobic PVDF membrane (PVDFAH) has been prepared by surface-coating of a hydrogel onto the membrane surface, and its superior performance for oil/water emulsion separation has been demonstrated. The coated hydrogel was constructed by an interfacial polymerization based on the thiol-epoxy reaction of pentaerythritol tetrakis (3-mercaptopropionate) (PETMP) with diethylene glycol diglycidyl ether (PEGDGE) and simultaneously tethered on an alkaline-treated commercial PVDF membrane surface via the thio-ene reaction. The PVDFAH membranes can be fabricated in a few minutes under mild conditions and show superhydrophilic and underwater superoleophobic properties for a series of organic solvents. Energy dispersive X-ray (EDX) analysis shows that the hydrogel coating was efficient throughout the pore lumen. The membrane shows superior oil/water emulsion separation performance, including high water permeation, quantitative oil rejection, and robust antifouling performance in a series oil/water emulsions, including that prepared from crude oil. In addition, a 24 h Soxhlet-extraction experiment with ethanol/water solution (50:50, v/v) was conducted to test the tethered hydrogel stability. We see that the membrane maintained the water contact angle below 5°, indicating the covalent tethering stability. This technique shows great promise for scalable fabrication of membrane materials for handling practical oil emulsion purification.
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Jiang, J., Zhu, L., Zhu, L., Zhang, H., Zhu, B., & Xu, Y. (2013) · ACS Applied Materials & Interfaces · doi:10.1021/am403405c · Cited by 408
Cited by
Separation Mechanism and Construction of Surfaces with Special Wettability for Oil/Water Separation
Chen, C., Weng, D., Mahmood, A., Chen, S., & Wang, J. (2019) · ACS Applied Materials & Interfaces · doi:10.1021/acsami.9b01293 · Cited by 697
Shi, H., He, Y., Pan, Y., Di, H., Zeng, G., Zhang, L., & Zhang, C. (2016) · Journal of Membrane Science · doi:10.1016/j.memsci.2016.01.053 · Cited by 485
Wang, Z., Ji, S., He, F., Cao, M., Peng, S., & Li, Y. (2018) · Journal of Materials Chemistry A · doi:10.1039/c7ta10524j · Cited by 341
Self-citationOdoom, J., Iorhemen, O. T., & Li, J. (2025) · Energy, Ecology and Environment · doi:10.1007/s40974-024-00332-w · Cited by 27
Metadata
- Authors
- Yuan, T., Meng, J., Hao, T., Wang, Z., & Zhang, Y.
- Venue
- ACS Applied Materials & Interfaces
- Publisher
- American Chemical Society (ACS)
- Published
- 2015-07-02
- Volume
- 7
- Issue
- 27
- Pages
- 14896-14904
- ISSN
- 1944-8244 (ISSN-L)
- 1944-8252
- OpenAlex
- W2345440556
- Cited by
- 260
- References
- 1
- FWCI
- 12.46
- Type
- journal article
- Language
- en
- Open access
- closed
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- Yuan, T., Meng, J., Hao, T., Wang, Z., & Zhang, Y. (2015). A Scalable Method toward Superhydrophilic and Underwater Superoleophobic PVDF Membranes for Effective Oil/Water Emulsion Separation. ACS Applied Materials & Interfaces. https://doi.org/10.1021/acsami.5b03625
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