Superhydrophobic metal organic framework doped polycarbonate porous monolith for efficient selective removal oil from water. (December 2020)

• Record Type: Journal Article
• Authors: Wang, Yanhua; Yan, Jingmin; Wang, Jianguang; Zhang, Xiaomeng; Wei, Lianqi; Du, Yingchao; Yu, Bo; Ye, Shufeng
• Is Part Of: Chemosphere. Volume 260(2020)
• Publication Date: 2020-12
• Subjects: Superhydrophobic -- Metal organic framework (ZIF-8) -- Porous polymer monoliths -- Oil/water separation -- Wastewater treatment; Pollution -- Periodicals; Pollution -- Physiological effect -- Periodicals; Environmental sciences -- Periodicals; Atmospheric chemistry -- Periodicals; 551.511
• DOI: 10.1016/j.chemosphere.2020.127583
• Languages: English
• ISSNs: 0045-6535

Abstract

Abstract: 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° to 154.25° 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. Graphical abstract: Image 1 Highlights: Novel Z8/PC monolith was synthesized by a facile phase separation method. The superhydrophobic monolith could effectively selective oil/water separation. The monolith has cross-linked 3D hierarchical structure and nano-flower surface. The use of ZIF-8 significantly compensated for the shortage of pure monolith.