TY - JOUR
T1 - Durable CNTs Reinforced Porous Electrospun Superhydrophobic Membrane for Efficient Gravity Driven Oil/Water Separation
AU - Wang, Kai
AU - Zhang, Tian C.
AU - Wei, Baibing
AU - Chen, Shixiong
AU - Liang, Ying
AU - Yuan, Shaojun
N1 - Funding Information:
We would like to acknowledge the financial assistance of the National Natural Science Foundation of China (No. 21676169 ) and the SEM images from Institute of New Energy and Low Carbon Technology of Sichuan University .
Publisher Copyright:
© 2020
PY - 2021/1/5
Y1 - 2021/1/5
N2 - Developing a durable and efficient oil/water separation membrane for purification of the oily water is crucial for sustainable aquatic ecosystems and public health. Herein, a superhydrophobic and superoleophilic nanofibrous membrane was successfully developed with an improved mechanical strength via a facile method of blend-electrospun. By introducing an ultralow amounts of carbon nanotubes (CNTs, 0.15 wt%, 2.55 mg/g), the obtained composite membrane exhibited a satisfactory hydrophobic (water contact angle, WCA = 152°) and oleophilic nature (oil contact angle, OCA ∼ 0°, oil permeation time =91.63 ms). The as-prepared composite membrane exhibited a strong acid/alkali resistance (pH = 1–14), high thermal stability (160 °C), and good mechanical stability; it had a high oil-water separation flux (max = 9270 L m-2 h-1) and a separation efficiency of > 99% under the driving of gravity, indicating a significant applicability for energy-saving filtration. The integration of high performance, low cost, and a simple solution-based fabrication process makes the as-prepared membranes have a great potential for future applications.
AB - Developing a durable and efficient oil/water separation membrane for purification of the oily water is crucial for sustainable aquatic ecosystems and public health. Herein, a superhydrophobic and superoleophilic nanofibrous membrane was successfully developed with an improved mechanical strength via a facile method of blend-electrospun. By introducing an ultralow amounts of carbon nanotubes (CNTs, 0.15 wt%, 2.55 mg/g), the obtained composite membrane exhibited a satisfactory hydrophobic (water contact angle, WCA = 152°) and oleophilic nature (oil contact angle, OCA ∼ 0°, oil permeation time =91.63 ms). The as-prepared composite membrane exhibited a strong acid/alkali resistance (pH = 1–14), high thermal stability (160 °C), and good mechanical stability; it had a high oil-water separation flux (max = 9270 L m-2 h-1) and a separation efficiency of > 99% under the driving of gravity, indicating a significant applicability for energy-saving filtration. The integration of high performance, low cost, and a simple solution-based fabrication process makes the as-prepared membranes have a great potential for future applications.
KW - Blend-electrospun
KW - Carbon nanotubes
KW - Mechanical stability
KW - Membrane
KW - Oil-water separation
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U2 - 10.1016/j.colsurfa.2020.125342
DO - 10.1016/j.colsurfa.2020.125342
M3 - Article
AN - SCOPUS:85092018642
SN - 0927-7757
VL - 608
JO - Colloids and Surfaces A: Physicochemical and Engineering Aspects
JF - Colloids and Surfaces A: Physicochemical and Engineering Aspects
M1 - 125342
ER -