Abstract
Although many superwetting materials have been designed for the treatment of oil-containing wastewater, separation strategies for oil-in-water systems containing bacteria have rarely been reported. Herein, poly(vinylidene difluoride)- and poly(lactic acid)-blended fibrous membranes loaded with silver and copper oxide nanoparticles were successfully prepared by a two-step method of electrostatic spinning and liquid-phase synthesis. The product membrane showed excellent super-oleophilic properties in air and hydrophobicity under oil. It could separate water-in-oil emulsion systems containing surfactants with an efficiency above 90%. More importantly, the nanoparticle-loaded fibers were characterized by material degradability and slowly released ions. The fibers exhibited excellent antibacterial activities against both gram-positive and -negative bacteria. This work provides a feasible strategy for water-in-oil emulsion separation and bacterial treatment of wastewater.
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This work was supported by the National Key R&D Program of China (Grant No. 2020YFC1808401), the National Natural Science Foundation of China (Grant Nos. 22078213, 21938006, 51973148, 21776190), the Cutting-Edge Technology Basic Research Project of Jiangsu (Grant No. BK20202012), prospective application research project of Suzhou (Grant No. SYC2022042), water research and technology project of Suzhou (Grant No. 2022006), and the project supported by the Priority Academic Program Development of Jiangsu Higher Education Institutions.
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Xiang, X., Chen, D., Li, N. et al. PVDF/PLA electrospun fiber membrane impregnated with metal nanoparticles for emulsion separation, surface antimicrobial, and antifouling activities. Sci. China Technol. Sci. 66, 1461–1470 (2023). https://doi.org/10.1007/s11431-022-2325-2
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DOI: https://doi.org/10.1007/s11431-022-2325-2