Superhydrophobic/Superoleophilic Polycarbonate/Carbon Nanotubes Porous Monolith for Selective Oil Adsorption from Water

By Zhenzhen Li, Bo Wang, Xiuming Qin, Yingke Wang, Chuntai Liu, Qian Shao, Ning Wang, Jiaoxia Zhang, Zikang Wang, Changyu Shen and 1 more. ACS Sustainable Chemistry and Engineering, 2018

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A superhydrophobic/superoleophilic porous polycarbonate/carboxyl-functionalized multiwalled carbon nanotubes (PC/cMWCNTs) monolith with novel hierarchical micronanostructure was facilely fabricated via a thermally impacted nonsolvent induced phase separation method. A novel porous microstructure endowed PC/cMWCNTs monolith had a high porosity of 90.1%. Based on excellent superhydrophobicity (water contact angle of 159°) and superoleophilicity (oil contact angle of 0°), this porous monolith could selectively adsorb various types of oils/organic solvents from the oil–water mixture. Additionally, the monolith exhibited outstanding oil/water separation performance including fast adsorption speed, high saturation capacity, and superior recycling ability. The equilibrium adsorption time and saturated adsorption capacity of soybean oil were 20 s and 12.62 g g–1, respectively. By simple centrifugation or evaporation, the recovered PC/cMWCNTs monolith could be reused for at least 10 cycles. Thus, porous PC/cMWCNTs...

Subfields: Biomaterials, Biomedical Engineering, Surfaces, Coatings and Films

View Paper: https://www.semanticscholar.org/paper/5dcf6b49876873e420d722e4380793ca164a9f29