Centrifugally spun superhydrophobic fibrous membranes with core-sheath structure assisted by hyper branched polymer and via click chemistry for high efficiency oil–water separation

Zhang, Zhao; Zhou, Jing; Hou, Teng; Xu, Jingying; Wang, Yaru; Ye, Hao; Yang, Bin; Li, Xianglong

doi:10.1016/j.seppur.2024.127480

Separation and Purification Technology

2024

DOI: 10.1016/j.seppur.2024.127480

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Centrifugally spun superhydrophobic fibrous membranes with core-sheath structure assisted by hyper branched polymer and via click chemistry for high efficiency oil–water separation

Zhao Zhang,

Jing Zhou,

Teng Hou

et al.

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2024

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Centrifugal Spinning of PVDF Micro/Nanofibrous Membrane for Oil–Water Separation

Wang,

Zhou,

et al. 2024

ACS Appl. Nano Mater.

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Poly(vinylidene fluoride) (PVDF) fibers have been widely investigated in the fields of electronics, filtration, and oil/ water separation due to their exceptional piezoelectric/thermoelectric/ferroelectric properties, excellent chemical/thermal properties, and high mechanical properties. However, the application of PVDF micro/nanofibrous membrane in these fields is still limited due to the solvent toxicity of PVDF in the fiber preparation process. In this case, we developed an environmentally friendly strategy for producing pure PVDF micro/nanofibrous membranes. In detail, the centrifugally spun precursor PVDF/poly(ethylene oxide) (PEO) micro/nanofibrous membrane was obtained from a composite spinning solution composed of PVDF emulsion and PEO solution. Subsequently, the precursor micro/nanofibrous membranes were sintered at high temperature to decompose PEO and obtain pure PVDF micro/nanofibrous membrane. The results indicate that the pure PVDF fibrous membranes present nanostripe bumps on the surface. The height and number of nanostripe bumps can be easily controlled by the sintering temperature. Owing to the high surface roughness and low surface energy of the prepared PVDF fiber membranes, an excellent droplet rejection (above 155°) is produced. Moreover, PVDF micro/nanofibrous membranes have high flux (3837 L•m −2 •h −1 ) and excellent water-in-oil separation efficiency (99.42%). This study describes a way to fabricate the pure PVDF micro/nanofibrous membranes and apply them to oil−water separation.

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Centrifugal Spinning of PVDF Micro/Nanofibrous Membrane for Oil–Water Separation

Wang,

Zhou,

et al. 2024

ACS Appl. Nano Mater.

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Advanced Low–Cost Natural Materials for High–Performance Oil–Water Filtration Membranes: Achievements, Challenges, and Future Directions

Ramanamane,

Pita,

Sob

2024

Membranes

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The development of affordable ceramic membranes is essential for reducing expenses and optimizing the treatment of oily wastewater. There is an urgent demand for membranes that are not only affordable and easy to operate but also stable and capable of managing high fluxes to address the increasing volumes of oily wastewater. The significant production demands associated with many commercially available ceramic membranes, primarily due to the use of specialised raw materials and intricate processing methods, limiting their suitability for many wastewater treatment applications. Consequently, there is a rising interest in creating innovative ceramic membranes using affordable materials and simpler production techniques. This study reviewed the oil–water ceramic membranes utilizing affordable natural ceramic materials aimed at improving membrane performance. It focused on reviewing the environmentally friendly and economically viable membranes derived from natural ceramic resources as an alternative to conventional synthetic membranes. These natural ceramic materials possess crucial properties like hydrophilicity and oleophobicity, which are vital for effective oil–water separation. The ceramic membranes were reviewed for their filtration performance and advantages. It was reported that these natural ceramic material-based membranes demonstrate superior separation efficiency, and strong mechanical stability, making them promising candidates for sustainable water treatment.

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Centrifugally spun superhydrophobic fibrous membranes with core-sheath structure assisted by hyper branched polymer and via click chemistry for high efficiency oil–water separation

Cited by 2 publications

References 50 publications

Centrifugal Spinning of PVDF Micro/Nanofibrous Membrane for Oil–Water Separation

Centrifugal Spinning of PVDF Micro/Nanofibrous Membrane for Oil–Water Separation

Advanced Low–Cost Natural Materials for High–Performance Oil–Water Filtration Membranes: Achievements, Challenges, and Future Directions

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