Polydopamine nanocluster decorated electrospun nanofibrous membrane for separation of oil/water emulsions
Author(s)
Wang, Jing
Hou, Li'an
Yan, Kangkang
Zhang, Lin
Yu, Qiming Jimmy
Griffith University Author(s)
Year published
2018
Metadata
Show full item recordAbstract
Superhydrophilic and underwater superoleophobic membranes are emerging materials for effective oil/water separation. In this paper, an electrospun nanofibrous (ENF) membrane with hierarchical structures was prepared by the construction of polydopamine nanoclusters onto a cross-linked polyacrylonitrile/hyperbranched polyethyleneimine (PAN/HPEI/PDA) ENF membrane. This hierarchical structure endows the membrane with superhydrophilicity with a low water contact angle of 0°, and underwater superoleophobicity with a high oil contact angle of 162°. This membrane can effectively separate oil/water emulsions with a high permeate flux ...
View more >Superhydrophilic and underwater superoleophobic membranes are emerging materials for effective oil/water separation. In this paper, an electrospun nanofibrous (ENF) membrane with hierarchical structures was prepared by the construction of polydopamine nanoclusters onto a cross-linked polyacrylonitrile/hyperbranched polyethyleneimine (PAN/HPEI/PDA) ENF membrane. This hierarchical structure endows the membrane with superhydrophilicity with a low water contact angle of 0°, and underwater superoleophobicity with a high oil contact angle of 162°. This membrane can effectively separate oil/water emulsions with a high permeate flux (~ 1600 L m−2 h−1) and high oil rejection (~ 98.5%), solely driven by gravity. Furthermore, the membrane also showed an excellent antifouling ability for oil droplets and recyclability (>10 cycles), making it a promising candidate for treatment of oily wastewater.
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View more >Superhydrophilic and underwater superoleophobic membranes are emerging materials for effective oil/water separation. In this paper, an electrospun nanofibrous (ENF) membrane with hierarchical structures was prepared by the construction of polydopamine nanoclusters onto a cross-linked polyacrylonitrile/hyperbranched polyethyleneimine (PAN/HPEI/PDA) ENF membrane. This hierarchical structure endows the membrane with superhydrophilicity with a low water contact angle of 0°, and underwater superoleophobicity with a high oil contact angle of 162°. This membrane can effectively separate oil/water emulsions with a high permeate flux (~ 1600 L m−2 h−1) and high oil rejection (~ 98.5%), solely driven by gravity. Furthermore, the membrane also showed an excellent antifouling ability for oil droplets and recyclability (>10 cycles), making it a promising candidate for treatment of oily wastewater.
View less >
Journal Title
Journal of Membrane Science
Volume
547
Subject
Chemical sciences
Engineering
Materials engineering not elsewhere classified