Facile preparation of metal-polyphenol coordination complex coated PVDF membrane for oil/water emulsion separation

Wu, Junda; Hou, Zhiqiang; Yu, Zhixin; Lang, Jihui; Cui, Jiuyun; Yang, Jin; Dai, Jiangdong; Li, Chunxiang; Yan, Yongsheng; Xie, Atian

doi:10.1016/j.seppur.2020.118022

Cited by 50 publications

(16 citation statements)

References 52 publications

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“…EGCG, the most abundant catechin in green tea) as organic ligands and transition metal ions (e.g. Zr 4+ , Al 3+ , Ni 2+ , Ag + , Ti 4+ ) as inorganic cross-linkers can be employed to construct a library of polyphenol-metal coordination networks., 21,59,98,99 which expanded the diversity and feasibility of plant polyphenol-involved coatings based on coordination chemistry. In the field of oily emulsion separation, Zhang and co-workers proposed a one-step coating strategy of EGCG and Ag + in aqueous buffer to facilely transform hydrophobic PVDF membrane into highly hydrophilic and underwater superoleophobic one.…”

Section: Binary Coatings Based On Coordination Interactions With Trmentioning

confidence: 99%

Recent advances in membrane hydrophilic modification with plant polyphenol‐inspired coatings for enhanced oily emulsion separation

Huang

Yin

Zhang

et al. 2021

J of Applied Polymer Sci

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Oily wastewater, especially the emulsified one, causes serious environment pollution and poses threats to the ecosystem and resource recycling. Among various filtration media, porous polymeric membranes have gained tremendous attention in dealing with oily emulsions due to their energy-saving, costeffective, and highly efficient features. However, to alleviate membrane fouling by oil droplets and ensure high separation efficiency, endowing membrane with superhydrophilicity and underwater superoleophobicity via facile strategy is highly desired. Taking advantages of the mild forming conditions, universality and cost-efficiency, more and more efforts have been devoted to membrane hydrophilic modification by plant polyphenol-inspired coatings in recent years. In this review, we focus on recent advances in constructing plant polyphenolinvolved coatings on membrane surface for oil-in-water emulsion separation. The interactions between plant polyphenol and functional materials including amino-functionalized materials, transition metal ions and oxidants via covalent chemistry, coordination chemistry, and rapid oxidation are highlighted. In addition, the impacts of the resultant coating on the wettability, oily emulsion separation performance, and anti-oil fouling performance of the modified membrane are systematically summarized. Finally, future outlooks in membrane surface engineering with plant polyphenol-involved coatings are discussed to further broaden the research related to high-efficiency oil/water separation based on membrane technology.

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Section: Binary Coatings Based On Coordination Interactions With Trmentioning

confidence: 99%

Recent advances in membrane hydrophilic modification with plant polyphenol‐inspired coatings for enhanced oily emulsion separation

Huang

Yin

Zhang

et al. 2021

J of Applied Polymer Sci

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“…Solution coating is a common method [ 39 , 40 , 41 ] to synthesize composite membranes for the deposition of a thin selective layer on top of microporous substrates or supports, which can be in the form of either flat-sheet, hollow fiber or tubular module to overcome fouling or improving solvents resistance and to enhance membrane efficiency [ 42 , 43 , 44 , 45 , 46 ]. For the sake of minimizing the substructure resistance, fully porous substrate will be preferred so that the coated selective layer mainly determines the membrane resistance [ 47 , 48 , 49 , 50 ].…”

Section: Common Fabrication Methods Of Membranesmentioning

confidence: 99%

Recent Advances of Pervaporation Separation in DMF/H2O Solutions: A Review

Zhang

et al. 2021

Membranes

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N,N-dimethylformamide (DMF) is a commonly-used solvent in industry and pharmaceutics for extracting acetylene and fabricating polyacrylonitrile fibers. It is also a starting material for a variety of intermediates such as esters, pyrimidines or chlordimeforms. However, after being used, DMF can be form 5–25% spent liquors (mass fraction) that are difficult to recycle with distillation. From the point of view of energy-efficiency and environment-friendliness, an emergent separation technology, pervaporation, is broadly applied in separation of azeotropic mixtures and organic–organic mixtures, dehydration of aqueous–organic mixtures and removal of trace volatile organic compounds from aqueous solutions. Since the advances in membrane technologies to separate N,N-dimethylformamide solutions have been rarely reviewed before, hence this review mainly discusses the research progress about various membranes in separating N,N-dimethylformamide aqueous solutions. The current state of available membranes in industry and academia, and their potential advantages, limitations and applications are also reviewed.

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“…[24,25] Nanoparticles, such as titanium dioxide, silicon dioxide, and carbon nanotubes have been used to form micro/nanostructure on the surface of filter membrane, so it is of great practical significance to explore the application of other functional nanoparticles in oil-water separation of membrane technology. [26][27][28][29][30][31][32] Metal-organic framework (MOF) with a three-dimensional structure is a cutting-edge porous crystalline material made by combining metal centers and organic ligands. [33,34] MOF structure can be tuned through the choice of metal ions or metaloxygen cluster along with organic ligands.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Superwetting Polyvinlydene Fluoride Membranes with Micro‐Nano Structure for Oil‐in‐Water Emulsion Separation

Zhao

et al. 2022

Macro Materials & Eng

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Membrane technology is seen as one of the useful strategies for the treatment of oily wastewater, but the membrane fouling in the process of membrane filtration seriously may affect some properties and time-consuming. Hydrophilic membrane surface can reduce membrane fouling. The appropriate design for membrane composition and surface structure can transform membrane surface with expected performance. In this work, hydrophilic polyvinylidene fluoride (PVDF) membranes with micro-nanostructure are fabricated by in situ synthesis and layer-by-layer assembly strategies. A zeolitic imidazolate framework-8 (ZIF-8) and tannic acid are used to construct microstructure and support hydrophilic groups. The water contact angle and water flux of initial PVDF membrane are 110.67°a nd 6585.7 L m −2 h −1 , respectively, while the optimally modified membrane possesses water contact of 14.5°and water flux of 13641.8 L m −2 h −1 . The modified membrane not only owns good underwater oil repellency and oil adhesion resistance but also processes good separation performance for surfactant stable oil-in-water emulsion. Furthermore, the modified membranes exhibit constant permeability and underwater oleophobicity in cycling experiments and harsh environments, indicating that the modified coating has stability against shedding of the modified materials. This method supports valuable references for MOF application in the field of oil-water separation.

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Facile preparation of metal-polyphenol coordination complex coated PVDF membrane for oil/water emulsion separation

Cited by 50 publications

References 52 publications

Recent advances in membrane hydrophilic modification with plant polyphenol‐inspired coatings for enhanced oily emulsion separation

Recent advances in membrane hydrophilic modification with plant polyphenol‐inspired coatings for enhanced oily emulsion separation

Recent Advances of Pervaporation Separation in DMF/H2O Solutions: A Review

Superwetting Polyvinlydene Fluoride Membranes with Micro‐Nano Structure for Oil‐in‐Water Emulsion Separation

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