Journal ArticleDOI
Photo-Fenton self-cleaning membranes with robust flux recovery for an efficient oil/water emulsion separation
Atian Xie,Jiuyun Cui,Jin Yang,Yangyang Chen,Jiangdong Dai,Jihui Lang,Chunxiang Li,Yongsheng Yan +7 more
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TLDR
In this paper, the green tannic acid (TA)-Fe(III) complex is first assembled onto the polyvinylidene fluoride membrane (PVDF) surface and followed by the in situ mineralization of β-FeOOH to fabricate the PVDF/TA/β-FeOH membrane for efficient oil/water emulsion separation.Abstract:
Superhydrophilic/underwater superoleophobic membranes have aroused much research enthusiasm because of their good anti-fouling ability for the treatment of oil-contaminated water. However, such anti-fouling membranes inevitably suffer from fouling during long-term use. Thus, anti-fouling membranes with excellent self-cleaning performance, fast and superior flux recovery are still greatly required. Herein, the green tannic acid (TA)-Fe(III) complex is first assembled onto the polyvinylidene fluoride membrane (PVDF) surface and followed by the in situ mineralization of β-FeOOH to fabricate the PVDF/TA/β-FeOOH membrane for efficient oil/water emulsion separation. The resultant membrane exhibits superhydrophilicity and underwater superoleophobicity with underwater OCA of above 155° for various oils. Importantly, the as-prepared membrane shows fast (within 10 min) and excellent flux recovery (over 98%) attributed to the robust photo-Fenton catalytic activity of β-FeOOH. Moreover, the membrane also displays high separation efficiency (>99.1%) and high flux (1426.8–2106.2 L m−2 h−1 bar−1) for a series of oil/water emulsions. This study highlights a new direction in the development of photo-Fenton self-cleaning membranes with fast and robust flux recovery for efficient oil/water emulsion separation.read more
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Journal ArticleDOI
Photo-Fenton self-cleaning PVDF/NH2-MIL-88B(Fe) membranes towards highly-efficient oil/water emulsion separation
Atian Xie,Jiuyun Cui,Jin Yang,Yangyang Chen,Jihui Lang,Chunxiang Li,Yongsheng Yan,Jiangdong Dai +7 more
TL;DR: In this article, a simple non-solvent induced phase conversion method was used to obtain an antifouling membrane with high photo-Fenton activity of NM88B.
Journal ArticleDOI
Graphene oxide/Fe(III)-based metal-organic framework membrane for enhanced water purification based on synergistic separation and photo-Fenton processes
Atian Xie,Jiuyun Cui,Jin Yang,Yangyang Chen,Jihui Lang,Chunxiang Li,Yongsheng Yan,Jiangdong Dai +7 more
TL;DR: In this paper, a graphene oxide/MIL-88A(Fe) (GO/M88A) membrane was prepared for the first time by a facile vacuum filtration method.
Journal ArticleDOI
Applications of tannic acid in membrane technologies: A review.
TL;DR: A comprehensive review of the recent developments in tannic acid in membrane technologies, including the construction of superhydrophilic and antifouling surfaces and polymer/nanoparticle interfaces with high compatibility and development of thin film composite membranes with high permselectivity is summarized.
Journal ArticleDOI
A Self-Cleaning Heterostructured Membrane for Efficient Oil-in-Water Emulsion Separation with Stable Flux.
TL;DR: A 2D heterostructure membrane with visible-light-driven self-cleaning performance is prepared via a self-assembly process that has excellent separation performance for oil-water emulsions with both high flux and efficiency and suggests great potential in wastewater treatment applications.
Journal ArticleDOI
Catalytic membrane-based oxidation-filtration systems for organic wastewater purification: A review
TL;DR: In this article, the preparation approaches of catalytic membranes including blending, surface coating, and bottom-up synthesis are comprehensively summarized and the principles, influencing factors, advantages and issues of different catalytic membrane/oxidation systems are outlined comparatively.
References
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One-Step Assembly of Coordination Complexes for Versatile Film and Particle Engineering
Hirotaka Ejima,Joseph J. Richardson,Kang Liang,James P. Best,Martin P. van Koeverden,Georgina K. Such,Jiwei Cui,Frank Caruso +7 more
TL;DR: Aqueous deposition is performed on a range of planar as well as inorganic, organic, and biological particle templates, demonstrating an extremely rapid technique for producing structurally diverse, thin films and capsules that can disassemble.
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A novel superhydrophilic and underwater superoleophobic hydrogel-coated mesh for oil/water separation.
Zhongxin Xue,Shutao Wang,Ling Lin,Ling Lin,Li Chen,Li Chen,Mingjie Liu,Mingjie Liu,Lin Feng,Lei Jiang +9 more
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In situ XPS analysis of various iron oxide films grown by NO2-assisted molecular-beam epitaxy
TL;DR: In this article, the XPS core-and valence-level spectra of clean and well-characterized iron oxide films were analyzed and the satellite structures of each oxide were simulated using a cluster-model calculation.
Journal ArticleDOI
Salt-Induced Fabrication of Superhydrophilic and Underwater Superoleophobic PAA-g-PVDF Membranes for Effective Separation of Oil-in-Water Emulsions
TL;DR: The fabrication of a novel superhydrophilic and underwater superoleophobic poly(acrylic acid)-grafted PVDF filtration membrane using a salt-induced phase-inversion approach that exhibits an excellent antifouling property and is easily recycled for long-term use.