PES/Fe3S4@NiO self-cleaning membrane with rapid catalysis for effective emulsion separation and dye degradation

Xu, Dan; Li, Chengcai; Liu, J.; Liu, Guojin; Zhu, Hailin; Zhang, Huapeng; Yu, Bingxin; Guo, Yuhai

doi:10.1016/j.memsci.2023.121874

Cited by 22 publications

(4 citation statements)

References 43 publications

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“…The FRR was calculated using eq A UV–vis spectrophotometer was used to determine the oil content of the emulsion. The separation rate ( R ) was calculated using eq F l u x = V A · T F R R = F l u x a F l u x b × 100 % R = ( 1 − C f C 0 ) × 100 % here, the oil contents of the filtrate and original emulsion are denoted by C f and C 0 . For cycle tests, the prepared membrane was tested directly in cycles without cleaning.…”

Section: Methodsmentioning

confidence: 99%

Construction of a Multiscaled Synergistic Membrane for Efficient Dye Adsorption and Emulsion Separation

Zheng,

Sun,

et al. 2024

ACS Appl. Polym. Mater.

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Water filtering materials have become a research hotspot, as environmental contamination, particularly water pollution, poses a severe threat to human health worldwide. Hence, flower-like multiscaled difunctional synergistic membranes exhibiting superhydrophilicity and underwater superoleophobicity were fabricated via electrospinning and hydrothermal methods for oil/water separation and dye adsorption. Furthermore, the morphology, chemical composition, wettability, water transmission, and oil resistance of the prepared membranes were tested and analyzed. The comprehensive properties of the membranes were evaluated through oil/water separation and dye adsorption. The results show that the obtained flower-like multiscaled [polyamide 66 (PA66)@MIL] membrane has excellent wettability and outstanding oil resistance properties in water (an underwater oil contact angle of 161.08°). Also, after several filtration cycles, the membrane still maintains a high recovery flux (nearly 99%). In addition, the removal rate of the methylene blue solution of the PA66@MIL membrane reached 91.24% after 5 cycles of the adsorption and filtration process due to the synergia of the nanofiber membrane and flower-like material. Moreover, the obtained membrane displayed remarkable stability and retained outstanding hydrophilicity under various harsh conditions (acid, alkali, salt solution, and sonication). This method can provide valuable guidance for the design of high-performance oil/water separation membranes suitable for multiple application scenarios.

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Section: Methodsmentioning

confidence: 99%

Construction of a Multiscaled Synergistic Membrane for Efficient Dye Adsorption and Emulsion Separation

Zheng,

Sun,

et al. 2024

ACS Appl. Polym. Mater.

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“…The ever-increasing pollution of groundwater or surface water caused by industrialization attracted much attention [ [1] , [2] , [3] , [4] , [5] , [6] ]. Particularly, the presence of persistent organic pollutants poses serious risks to aquatic life and public health.…”

Section: Introductionmentioning

confidence: 99%

In situ single iron atom doping on Bi2WO6 monolayers triggers efficient photo-fenton reaction

Liu,

Wang,

Chen

et al. 2024

Environmental Science and Ecotechnology

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“…Drawing inspiration from natural phenomena such as the “Lotus effect” and “Rose petal effect”, biomimetic functional membranes with special wettability are regarded as highly effective and sustainable for oil–water separation. − However, the membranes exhibiting singular wettability can solely segregate either water-in-oil (W/O) or oil-in-water (O/W) lacking the capacity for selective separation of oil–water mixtures . Consequently, there is a pressing and immediate requirement to develop multifunctional membranes possessing switchable wettability, enabling the as-required separation of all kinds of oil–water emulsions.…”

Section: Introductionmentioning

confidence: 99%

Hierarchical Fusiform ZnO-Constructed Nanoflowers Electrodeposited on Stainless-Steel Mesh with Switchable Wettability for On-Demand Separation of Oil–Water Emulsion and Photocatalytic Degradation for Water-Soluble Pollutants

Yang,

Li,

Wang

et al. 2024

ACS Sustainable Chem. Eng.

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Hierarchical zinc oxide (ZnO) micronano structures have attracted plenty of research interests, which are extensively applied in emulsion separation and photocatalysis. In this study, fusiform ZnO-constructed nanoflowers were coated on a stainless-steel mesh (SSM) via an easy one-step electrodeposition approach. The ZnO@SSM membrane exhibited excellent superhydrophilicity with a water contact angle (WCA) of approximately 0° and underwater superoleophobicity with an underwater–oil contact angle (UOCA) of 164.3°. Reversible wettability transformation of the ZnO@SSM membrane between superhydrophilicity/underwater superoleophobicity and superhydrophobicity/superoleophilicity was quickly achieved by the alternate treatment on the membrane with stearic acid (SA) ethanol solution and NaOH solution. The designed membrane can synchronously possess considerable oil–water emulsion separation capacity and efficient photocatalytic degradation for a water-soluble pollutant. The separation efficiency (SE) of surfactant-stabilized emulsion was greater than 99.0%, along with fast permission fluxes up to 489.4 L·m–2·h–1 (oil-in-water) and 676.0 L·m–2·h–1 (water-in-oil). The maximum degradation efficiency for methylene blue (MB) solution was up to 99.0% under visible-light irradiation in 90 min. This novel, sustainable, and multifunctional membrane with a hierarchical structure of fusiform ZnO-constructed nanoflowers has a wide application prospect in the treatment of practically emulsified wastewater.

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PES/Fe3S4@NiO self-cleaning membrane with rapid catalysis for effective emulsion separation and dye degradation

Cited by 22 publications

References 43 publications

Construction of a Multiscaled Synergistic Membrane for Efficient Dye Adsorption and Emulsion Separation

Construction of a Multiscaled Synergistic Membrane for Efficient Dye Adsorption and Emulsion Separation

In situ single iron atom doping on Bi2WO6 monolayers triggers efficient photo-fenton reaction

Hierarchical Fusiform ZnO-Constructed Nanoflowers Electrodeposited on Stainless-Steel Mesh with Switchable Wettability for On-Demand Separation of Oil–Water Emulsion and Photocatalytic Degradation for Water-Soluble Pollutants

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