Polydopamine Nanocluster Embedded Nanofibrous Membrane via Blow Spinning for Separation of Oil/Water Emulsions
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 hier...
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| Format: | Article |
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MDPI AG
2021-05-01
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| Series: | Molecules |
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| Online Access: | https://www.mdpi.com/1420-3049/26/11/3258 |
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| author | Zhenglian Liu Ziling Xu Chaoqi Liu Yajing Zhao Qingyin Xia Minghao Fang Xin Min Zhaohui Huang Yan’gai Liu Xiaowen Wu |
| author_facet | Zhenglian Liu Ziling Xu Chaoqi Liu Yajing Zhao Qingyin Xia Minghao Fang Xin Min Zhaohui Huang Yan’gai Liu Xiaowen Wu |
| author_sort | Zhenglian Liu |
| collection | DOAJ |
| description | 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<sup>−2</sup> h<sup>−1</sup>) 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<sup>−2</sup> h<sup>−1</sup>. These results show that the as-prepared polydopamine nanocluster-embedded nanofiber membrane has an excellent potential for oily wastewater treatment applications. |
| first_indexed | 2024-03-10T10:55:52Z |
| format | Article |
| id | doaj.art-a6f16fd1b3da4a9aa3693b6c2473e436 |
| institution | Directory Open Access Journal |
| issn | 1420-3049 |
| language | English |
| last_indexed | 2024-03-10T10:55:52Z |
| publishDate | 2021-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Molecules |
| spelling | doaj.art-a6f16fd1b3da4a9aa3693b6c2473e4362023-11-21T21:52:24ZengMDPI AGMolecules1420-30492021-05-012611325810.3390/molecules26113258Polydopamine Nanocluster Embedded Nanofibrous Membrane via Blow Spinning for Separation of Oil/Water EmulsionsZhenglian Liu0Ziling Xu1Chaoqi Liu2Yajing Zhao3Qingyin Xia4Minghao Fang5Xin Min6Zhaohui Huang7Yan’gai Liu8Xiaowen Wu9Beijing 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, ChinaBeijing 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, ChinaBeijing 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, ChinaBeijing 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, ChinaSchool of Earth Science and Resources, China University of Geosciences, Beijing 100083, ChinaSchool of Earth Science and Resources, China University of Geosciences, Beijing 100083, ChinaBeijing 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, ChinaBeijing 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, ChinaBeijing 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, ChinaBeijing 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, ChinaDeveloping 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<sup>−2</sup> h<sup>−1</sup>) 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<sup>−2</sup> h<sup>−1</sup>. These results show that the as-prepared polydopamine nanocluster-embedded nanofiber membrane has an excellent potential for oily wastewater treatment applications.https://www.mdpi.com/1420-3049/26/11/3258nanofiber membranepolydopamine nanoclusterblow spinningoil–water emulsion |
| spellingShingle | Zhenglian Liu Ziling Xu Chaoqi Liu Yajing Zhao Qingyin Xia Minghao Fang Xin Min Zhaohui Huang Yan’gai Liu Xiaowen Wu Polydopamine Nanocluster Embedded Nanofibrous Membrane via Blow Spinning for Separation of Oil/Water Emulsions Molecules nanofiber membrane polydopamine nanocluster blow spinning oil–water emulsion |
| title | Polydopamine Nanocluster Embedded Nanofibrous Membrane via Blow Spinning for Separation of Oil/Water Emulsions |
| title_full | Polydopamine Nanocluster Embedded Nanofibrous Membrane via Blow Spinning for Separation of Oil/Water Emulsions |
| title_fullStr | Polydopamine Nanocluster Embedded Nanofibrous Membrane via Blow Spinning for Separation of Oil/Water Emulsions |
| title_full_unstemmed | Polydopamine Nanocluster Embedded Nanofibrous Membrane via Blow Spinning for Separation of Oil/Water Emulsions |
| title_short | Polydopamine Nanocluster Embedded Nanofibrous Membrane via Blow Spinning for Separation of Oil/Water Emulsions |
| title_sort | polydopamine nanocluster embedded nanofibrous membrane via blow spinning for separation of oil water emulsions |
| topic | nanofiber membrane polydopamine nanocluster blow spinning oil–water emulsion |
| url | https://www.mdpi.com/1420-3049/26/11/3258 |
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