A self-cleaning zwitterionic nanofibrous membrane for highly efficient oil-in-water separation

A heterostructured PAN–PPy/ZnO nanofibrous membrane with superhydrophilicity/underwater superoleophobicity and regeneration capacity to efficiently and quickly remediate the complex oily sewage system.

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Sacrifice Template Strategy to the Fabrication of a Self-Cleaning Nanofibrous Membrane for Efficient Crude Oil-in-Water Emulsion Separation with High Flux

ACS Applied Materials & Interfaces ◽

10.1021/acsami.0c15387 ◽

2020 ◽

Vol 12 (47) ◽

pp. 53484-53493

Author(s):

Mingming Wu ◽

Weimin Liu ◽

Peng Mu ◽

Qingtao Wang ◽

Jian Li

Keyword(s):

Crude Oil ◽

Nanofibrous Membrane ◽

High Flux ◽

Water Emulsion ◽

Oil In Water ◽

Emulsion Separation ◽

Self Cleaning ◽

Oil In Water Emulsion

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Engineering a superwettable polyolefin membrane for highly efficient oil/water separation with excellent self-cleaning and photo-catalysis degradation property

Journal of Membrane Science ◽

10.1016/j.memsci.2020.118409 ◽

2020 ◽

Vol 611 ◽

pp. 118409 ◽

Cited By ~ 3

Author(s):

Ming Wang ◽

Zewen Xu ◽

Yaoli Guo ◽

Yingfei Hou ◽

Peng Li ◽

...

Keyword(s):

Water Separation ◽

Highly Efficient ◽

Photo Catalysis ◽

Oil Water Separation ◽

Oil Water ◽

Self Cleaning

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An oil/water separation nanofibrous membrane with a 3-D structure from the blending of PES and SPEEK

High Performance Polymers ◽

10.1177/0954008318825297 ◽

2019 ◽

Vol 31 (5) ◽

pp. 538-547 ◽

Cited By ~ 6

Author(s):

Qiong Du ◽

Zheng Chen ◽

Xiangyu Jiang ◽

Jinhui Pang ◽

Zhenhua Jiang ◽

...

Keyword(s):

Mechanical Strength ◽

Separation Process ◽

Nanofibrous Membrane ◽

Water Separation ◽

Water Emulsion ◽

High Mechanical Strength ◽

Good Thermal Stability ◽

Oil In Water ◽

Oil Water Separation ◽

Oil Water

A new nanofibrous membrane (NFM) was prepared by blending polyethersulfone (PES) and sulfonated poly(ether ether ketone) (SPEEK) via electrospinning. The membrane exhibits good thermal stability and high mechanical strength. The hydrophilicity of the membrane could be controlled by adjusting the mass ratio of PES to SPEEK. PES acts as the backbone fiber and provides high mechanical strength, while SPEEK provides hydrophilic functional groups due to the strong hydrophilicity of the sulfonic group. The test results show that the composite NFM integrates the advantages of the two polymers. Simple adjustment of the weight ratios of the two polymers can enable an adjustable flux so that the membrane can be used for different kinds of oil/water separation. The results show that NFMs can not only separate immiscible oil/water systems but also separate oil-in-water emulsions. The immiscible oil/water separation process was driven only by gravity and had a high flux of 1119.63 Lm−2 h−1. This separation process conserves energy, which is beneficial for environmental protection. The separation flux of the oil-in-water emulsion was 758.71 Lm−2 h−1 bar−1 based on measurements under different pressures, and the separation purity total organic carbon was below 50 ppm. This work indicates that a membrane comprised of PES and SPEEK has excellent performance and can be used in different fields.

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