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Taro leaf-inspired and superwettable nanonet-covered nanofibrous membranes for high-efficiency oil purification

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Abstract

Membranes with high permeance and low energy consumption are highly desirable for efficient oil/water emulsion separation. However, creating such materials still remains a great challenge. Here, we report a novel electrohydrodynamic assembly strategy to create a thin nanonet-covered skin with a taro leaf-like micro/nano hierarchical surface and submicron pores on a fibrous membrane. The resultant biomimetic composite membrane exhibits integrated properties of robust under-oil superwettability, low water adhesion, and high water intrusion pressure. Consequently, the membrane can effectively separate various surfactant-free and surfactant-stabilized emulsions under ultralow pressure (<10 kPa), with high permeation flux (maximum of 12 994 L m−2 h−1), excellent separation efficiency (water contents in filtrates below 50 ppm), and outstanding antifouling properties.

Graphical abstract: Taro leaf-inspired and superwettable nanonet-covered nanofibrous membranes for high-efficiency oil purification

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Publication details

The article was received on 10 Jan 2019, accepted on 29 Apr 2019 and first published on 07 May 2019


Article type: Communication
DOI: 10.1039/C9NH00166B
Nanoscale Horiz., 2019, Advance Article

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    Taro leaf-inspired and superwettable nanonet-covered nanofibrous membranes for high-efficiency oil purification

    J. Zhang, J. Ge, Y. Si, F. Zhang, J. Yu, L. Liu and B. Ding, Nanoscale Horiz., 2019, Advance Article , DOI: 10.1039/C9NH00166B

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