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Under seawater superoleophobic PVDF membrane inspired by polydopamine for efficient oil/seawater separation

Open access
Xiang, Yanhui, Liu, Fu, Xue, Lixin·2015·Journal of Membrane Science

Abstract

Abstract Under seawater superoleophobic polyvinylidene fluoride (PVDF) membrane inspired by mussel is successfully fabricated for both surfactant-free and surfactant-stabilized oil/seawater separation. The conventional PVDF membrane is modified by a simple solution-immersion method, which was immersed in dopamine aqueous solution for 24 h. The morphology and chemistry of dopamine inspired PVDF membrane was characterized by scanning electron microscope (SEM), atomic force microscopy (AFM), attenuated total reflectance Fourier transform infrared spectra (FTIR-ATR) and X-ray photoelectron spectroscopy (XPS) respectively. The as-prepared membrane obtained stable superoleophobicity under seawater with an oil contact angle of 152±0.3° and extremely low oil-adhesion. Separation experiments for both surfactant-free and surfactant-stabilized emulsions showed that our membrane exhibited high oil/seawater separation efficiency (oil concentration in filtrate below 80 ppm) and substantially high permeability, which are several times higher than that current traditional filtration membrane. Fouling resistance to proteins was also investigated for long-term use purpose. This study provides a facile solution-immersion method to fabricate under seawater superoleophobic membrane, highlighting its great potential in practical oil/seawater separation.

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Metadata

Authors
Xiang, Y., Liu, F., & Xue, L.
Venue
Journal of Membrane Science
Publisher
Elsevier BV
Published
2015-02
Volume
476
Pages
321-329
ISSN
0376-7388 (ISSN-L)
OpenAlex
W1999209871
Cited by
162
References
2
FWCI
4.86
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Under seawater superoleophobic PVDF membrane inspired by polydopamine for efficient oil/seawater separation. https://app.cochat.ai/papers/10.1016/j.memsci.2014.11.052
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Xiang, Y., Liu, F., & Xue, L. (2015). Under seawater superoleophobic PVDF membrane inspired by polydopamine for efficient oil/seawater separation. Journal of Membrane Science. https://doi.org/10.1016/j.memsci.2014.11.052

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.