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Article

Polydopamine Nanocluster Embedded Nanofibrous Membrane via Blow Spinning for Separation of Oil/Water Emulsions

1
Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences, Beijing 100083, China
2
School of Earth Science and Resources, China University of Geosciences, Beijing 100083, China
*
Authors to whom correspondence should be addressed.
Academic Editor: Natasa Poklar Ulrih
Molecules 2021, 26(11), 3258; https://doi.org/10.3390/molecules26113258
Received: 13 April 2021 / Revised: 21 May 2021 / Accepted: 25 May 2021 / Published: 28 May 2021
(This article belongs to the Special Issue Advanced Functional Nanomaterials: Design, Synthesis and Applications)
Developing a porous separation membrane that can efficiently separate oil–water emulsions still represents a challenge. In this study, nanofiber membranes with polydopamine clusters polymerized and embedded on the surface were successfully constructed using a solution blow-spinning process. The hierarchical surface structure enhanced the selective wettability, superhydrophilicity in air (≈0°), and underwater oleophobicity (≈160.2°) of the membrane. This membrane can effectively separate oil–water emulsions, achieving an excellent permeation flux (1552 Lm−2 h−1) and high separation efficiency (~99.86%) while operating only under the force of gravity. When the external driving pressure was increased to 20 kPa, the separation efficiency hardly changed (99.81%). However, the permeation flux significantly increased to 5894 Lm−2 h−1. These results show that the as-prepared polydopamine nanocluster-embedded nanofiber membrane has an excellent potential for oily wastewater treatment applications. View Full-Text
Keywords: nanofiber membrane; polydopamine nanocluster; blow spinning; oil–water emulsion nanofiber membrane; polydopamine nanocluster; blow spinning; oil–water emulsion
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MDPI and ACS Style

Liu, Z.; Xu, Z.; Liu, C.; Zhao, Y.; Xia, Q.; Fang, M.; Min, X.; Huang, Z.; Liu, Y.; Wu, X. Polydopamine Nanocluster Embedded Nanofibrous Membrane via Blow Spinning for Separation of Oil/Water Emulsions. Molecules 2021, 26, 3258. https://doi.org/10.3390/molecules26113258

AMA Style

Liu Z, Xu Z, Liu C, Zhao Y, Xia Q, Fang M, Min X, Huang Z, Liu Y, Wu X. Polydopamine Nanocluster Embedded Nanofibrous Membrane via Blow Spinning for Separation of Oil/Water Emulsions. Molecules. 2021; 26(11):3258. https://doi.org/10.3390/molecules26113258

Chicago/Turabian Style

Liu, Zhenglian, Ziling Xu, Chaoqi Liu, Yajing Zhao, Qingyin Xia, Minghao Fang, Xin Min, Zhaohui Huang, Yan’gai Liu, and Xiaowen Wu. 2021. "Polydopamine Nanocluster Embedded Nanofibrous Membrane via Blow Spinning for Separation of Oil/Water Emulsions" Molecules 26, no. 11: 3258. https://doi.org/10.3390/molecules26113258

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