Tannic acid (TA)-based coating modified membrane enhanced by successive inkjet printing of Fe3+ and sodium periodate (SP) for efficient oil-water separation

Xie, Hongli; Shen, Liguo; Xu, Yanchao; Hong, Huachang; Yang, Lining; Li, Renjie; Lin, Hongjun

doi:10.1016/j.memsci.2022.120873

Cited by 33 publications

(10 citation statements)

References 62 publications

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“…8b). 99 The method is short (10 min) and convenient. The modified membrane has good reusability with a flux recovery ratio of 89.1–98.0% after eight-cycle filtration.…”

Section: Surface Engineering Of Membranes By the Ta-based Coating For...mentioning

confidence: 99%

Tannic acid-based functional coating: surface engineering of membranes for oil-in-water emulsion separation

et al. 2022

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“…8b). 99 The method is short (10 min) and convenient. The modified membrane has good reusability with a flux recovery ratio of 89.1–98.0% after eight-cycle filtration.…”

Section: Surface Engineering Of Membranes By the Ta-based Coating For...mentioning

confidence: 99%

Tannic acid-based functional coating: surface engineering of membranes for oil-in-water emulsion separation

et al. 2022

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“…33 Xie et al creatively introduced sodium periodate into the metal−polyphenol network through inkjet printing to promote tannic acid deposition on the PVDF membrane surface, which converted the membrane from hydrophobic to hydrophilic. 34 Zhao et al codeposited hierarchical nanoparticles on the PVDF surface to transform the membrane from highly hydrophobic into superhydrophilic, realizing the highly efficient separation of oil/water emulsions without energy consumption. 35 Although the above method could change the PVDF wettability, it requires a long reaction time, complex operation steps, and even corrosive chemical reagents.…”

Section: ■ Introductionmentioning

confidence: 99%

“…For example, Zhu et al immersed the PVDF membrane in a NaOH solution for 12 h to realize the wettability transition from hydrophobic to hydrophilic . Xie et al creatively introduced sodium periodate into the metal–polyphenol network through inkjet printing to promote tannic acid deposition on the PVDF membrane surface, which converted the membrane from hydrophobic to hydrophilic . Zhao et al codeposited hierarchical nanoparticles on the PVDF surface to transform the membrane from highly hydrophobic into superhydrophilic, realizing the highly efficient separation of oil/water emulsions without energy consumption .…”

Section: Introductionmentioning

confidence: 99%

Underwater Oleophobic Electrospun Membrane with Spindle-Knotted Structured Fibers for Oil-in-Water Emulsion Separation

et al. 2023

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The potential of spider silk as an intriguing biological prototype for collecting water from a humid environment has attracted wide attention, and various materials with suitable structures have been engineered. Here, inspired by this phenomenon, a kind of superwetting poly(vinylidene fluoride) (PVDF) membrane with spindle-knotted structured fibers was prepared by the electrospinning method followed by oxygen plasma etching treatment. The prepared membrane presented a satisfactory separation efficiency for various oil-in-water emulsions. The cooperative effect of the special wettability property and the spindle-knot structure stimulated the emulsified oil droplets to accumulate quickly on the membrane surface. A model that explains the accumulation of emulsified oil droplets has also been developed. Furthermore, an artificial fiber comprising a micron-sized spindle-knot structure was prepared by the dip-coating method to clearly illustrate the aggregation process of the emulsified oil droplets and to verify the theoretical explanation. We hope that this study will provide new inspiration for oil/water emulsion separation techniques.

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“…Recently, membrane materials with high separation efficiency, low-cost, energy-efficiency, and flexibility have definite advantages over most traditional approaches (including centrifugation, oil skimmers, magnetic separations, etc.) to purify oily wastewater [ 2 , 3 , 4 , 5 ]. During the separation process, however, most of the conventional polymeric filtration membranes with hydrophobic/oleophilic property, such as polypropylene (PP), polytetrafluoroethylene (PTFE), and poly(vinylidene fluoride) (PVDF) membranes, suffer from membrane fouling and pore blocking, thus resulting in a rapid decline of separation performance in practical applications [ 6 , 7 ].…”

Section: Introductionmentioning

confidence: 99%

Hydrogel/β-FeOOH-Coated Poly(vinylidene fluoride) Membranes with Superhydrophilicity/Underwater Superoleophobicity Facilely Fabricated via an Aqueous Approach for Multifunctional Applications

et al. 2023

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Hydrogel coatings that can endow various substrates with superior properties (e.g., biocompatibility, hydrophilicity, and lubricity) have wide applications in the fields of oil/water separation, antifouling, anti-bioadhesion, etc. Currently, the engineering of multifunctional hydrogel-coated materials with superwettability and water purification property using a simple and sustainable strategy is still largely uninvestigated but has a beneficial effect on the world. Herein, we successfully prepared poly(2-acrylamido-2-methyl-1-propanesulfonic acid) hydrogel/β-FeOOH-coated poly(vinylidene fluoride) (PVDF/PAMPS/β-FeOOH) membrane through free-radical polymerization and the in situ mineralization process. In this work, owing to the combination of hydrophilic PAMPS hydrogel coating and β-FeOOH nanorods anchored onto PVDF membrane, the resultant PVDF/PAMPS/β-FeOOH membrane achieved outstanding superhydrophilicity/underwater superoleophobicity. Moreover, the membrane not only effectively separated surfactant-stabilized oil/water emulsions, but also possessed a long-term use capacity. In addition, excellent photocatalytic activity against organic pollutants was demonstrated so that the PVDF/PAMPS/β-FeOOH membrane could be utilized to deal with wastewater. It is envisioned that these hydrogel/β-FeOOH-coated PVDF membranes have versatile applications in the fields of oil/water separation and wastewater purification.

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Tannic acid (TA)-based coating modified membrane enhanced by successive inkjet printing of Fe3+ and sodium periodate (SP) for efficient oil-water separation

Cited by 33 publications

References 62 publications

Tannic acid-based functional coating: surface engineering of membranes for oil-in-water emulsion separation

Tannic acid-based functional coating: surface engineering of membranes for oil-in-water emulsion separation

Underwater Oleophobic Electrospun Membrane with Spindle-Knotted Structured Fibers for Oil-in-Water Emulsion Separation

Hydrogel/β-FeOOH-Coated Poly(vinylidene fluoride) Membranes with Superhydrophilicity/Underwater Superoleophobicity Facilely Fabricated via an Aqueous Approach for Multifunctional Applications

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