Journal
CHEMOSPHERE
Volume 260, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.chemosphere.2020.127583
Keywords
Superhydrophobic; Metal organic framework (ZIF-8); Porous polymer monoliths; Oil/water separation; Wastewater treatment
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Funding
- Chinese academy of science project [KFJ-STS-QYZD-044]
- Natural Science Foundation of China [51202249]
- National Key R&D Program during the 13th Five-year Plan Period [2017YFC0211503]
- Innovation Academy for Green Manufacture, Chinese Academy of Sciences [IAGM2020DB02]
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A series of superhydrophobic polycarbonate porous monoliths modified with metal organic framework (Z8/PC) were firstly fabricated through a facile thermally impacted non-solvent induced phase separation method for efficient selective oil/water separation. The performance of the monoliths on oil/water separation was evaluated in terms of selectivity, equilibrium adsorption capacity, corrosion resistance, kinetics, and circulation. The results showed that the use of ZIF-8 significantly compensated for the shortage of pure monolith. Compared with pure PC monolith, the hydrophobic angle of the Z8/PC-2 monolith promoted from 136.18 degrees to 154.25 degrees due to the micro-nano flower surface. Meanwhile, the Z8/PC-2 monolith displayed a more intricate and continuous interconnected 3D hierarchical micro-nano structure, which possessed the monolith a higher specific surface area of 146.84 m(2) g(-1) and porosity of 89.5%. What's more, more superior oil/water separation abilities of Z8/PC-2 monolith were manifested by the selective removal of oil or organic solvent from water within 30s, high equilibrium adsorption capacity, and excellent corrosion resistance. In addition, the ten-cycle regeneration of porous monoliths via centrifugation or evaporation displayed additional attractiveness. Therefore, porous Z8/PC monolith will be a promising candidate for the efficient selective oil/water separation of oil spills and organic solvents. (C) 2020 Elsevier Ltd. All rights reserved.
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