Journal
CHEMOSPHERE
Volume 254, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.chemosphere.2020.126873
Keywords
Polypropylene; Melt-blown; Dopamine; 3-aminopropyltriethoxysilane (APTES); Oil/water separation
Categories
Funding
- Natural Science Foundation of Tianjin, China [17JCQNJC08000, 18JCQNJC03400]
- Natural Science Foundation of Fujian [2018J01504, 2018J01505]
- Program for Innovative Research Team in University of Tianjin [TD13-5043]
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The removal of organic pollutants from water is highly desired because of the development of industrial and social economy. Superhydrophilic and underwater superoleophobic membranes are emerging materials for effective oil/water separation. In this paper, superhydrophilic and underwater superoleophobic polypropylene (PP) melt-blown membranes were prepared through melt-blown and in situ growth method, achieving highly efficient oil/water separation. After in situ growth, polydopamine (PDA) grows on the surface of PP fibers, and the addition of coupling agent (3-aminopropyltriethoxysilane, APTES) can improve the stability of the membrane in harsh environments (1 M HCl, 1 M NaOH, 1 M NaCl). The PDA/APTES@PP membrane could dramatically enhance the wetting (water contact angle similar to 0, underwater oil contact angle similar to 154 degrees) compare with the pristine PP melt-blown membrane (water contact angle similar to 130 degrees, underwater oil contact angle similar to 0). Moreover, the filtration performance is at a high level (similar to 99%). The behaviors are comparable or even superior to the typical reported results in the references (such as the mussel-inspired superhydrophilic PVDF membrane and copper mesh). This method provides a facile route to prepared multi-functional membrane for highly efficiency oil/water separation and industrial oily wastewater remediation. (C) 2020 Elsevier Ltd. All rights reserved.
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