Multifunctional membranes with super-wetting characteristics for oil-water separation and removal of hazardous environmental pollutants from water: A review

Baig, Umair; Faizan, Muhammad; Sajid, Mohd

doi:10.1016/j.cis.2020.102276

Cited by 100 publications

(32 citation statements)

References 99 publications

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“…[ 117 ] Diverse superhydrophobic polymer membranes have been successfully prepared for oil/water emulsions separation through various methods, such as phase inversion method, solvothermal method and coating method. [ 155,156 ]…”

Section: Special Wettability Membranes For Oil/water Emulsions Separationmentioning

confidence: 99%

Design, Development, and Outlook of Superwettability Membranes in Oil/Water Emulsions Separation

Cai

Fang

2021

Adv Materials Inter

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Oil leakage and discharge of industrial organic solvents are the main reasons for the oily wastewater. The separation of oil/water emulsions has been a global challenge due to the small particle size of the emulsions and their stabilities. An effective method is needed to resolve these issues. Superwettability membrane method has demonstrated a high separation efficiency, fast separation speed, low energy consumption, good scalability, easy operation, and recyclability. In essence, the special wettability of material is mainly determined by two factors: the chemical compositions of material surface and the surface morphology. Herein, in this review, the development of special wettability separation membranes is discussed including different preparation methods, and material preparation, such as superhydrophobic/super lipophilic, superhydrophilic/underwater superoleophobic, superlipophilic/superhydrophobic under oil, smart membranes with switchable wettability, and special wettability membranes with self‐healing or self‐cleaning property. The representative works of each part are introduced, focusing on preparation methods, innovations and separation performance of membranes. Finally, challenges and future directions in this field are also described.

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Section: Special Wettability Membranes For Oil/water Emulsions Separationmentioning

confidence: 99%

Design, Development, and Outlook of Superwettability Membranes in Oil/Water Emulsions Separation

Cai

Fang

2021

Adv Materials Inter

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“…The surface wettability of separating materials is an important factor in separation performance for oil/water mixtures. [12][13][14] Fortunately, many creatures in nature have superwettability surfaces, which always provide us with inspiration for designing and creating new separation materials. Inspired by the "self-cleaning lotus leaf," 15,16 the PTFE coating mesh film with super hydrophobic is reported for the first time by Jiang et al 17 Since then, various superhydrophobic/superoloeophilic materials, such as, polymer membrane, 18 sponge, 19 and metal mesh 20 have been successfully manufactured for oil removing from oil/water mixtures.…”

Section: Introductionmentioning

confidence: 99%

“…The surface wettability of separating materials is an important factor in separation performance for oil/water mixtures 12–14 . Fortunately, many creatures in nature have superwettability surfaces, which always provide us with inspiration for designing and creating new separation materials.…”

Section: Introductionmentioning

confidence: 99%

Fabrication and characteristic of 3‐D porous thermoplastic polyurethane/deacetylated cellulose acetate composite foam with outstanding mechanical property and oil/water separation performance

Cui

Fan

Liu³

et al. 2022

J of Applied Polymer Sci

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Nowadays, the environmental problems caused by industrial oily wastewater and offshore oil leakage are becoming more and more serious. Here, the 3-D porous polyurethane/deacetylated acetate cellulose (TPU/d-CA) composite foam with outstanding mechanical property and oil/water separation performance was successfully prepared. The morphology, wettability, mechanical properties, and oil/water separation performances had been systematically studied. The results showed that TPU/d-CA composite foam could be used as water and oil removing material, respectively, for a series of oil/water mixture only under gravity force, due to its lipophilicity and hydrophilicity. It has highseparation flux, which can reach up to 43,000 L/m 2 Áh and 85,000 L/m 2 Áh for water and oil, respectively and all the separation efficiency exceeds 98%. It also can be used as adsorbent material to absorb various oils, and the absorption capacity for carbon tetrachloride reached up to 34 g/g. Moreover, it can selectively, rapidly, and continuously separate oil or water by assisted peristaltic pump. After 15 cycle times, its separation efficiency is still as high as 98%. It has excellent comprehensive mechanical properties and antifouling ability. These results indicated that 3-D TPU/d-CA composite foam has broadly application prospects in oil/water separation field. K E Y W O R D S3-D porous composite foam, deacetylated cellulose acetate, mechanical property, oil/water separation, polyurethane

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“…Surface micro‐ and nanostructures have been extensively developed in the past decade for applications in various fields such as optics, [ 1 ] electronics, [ 2 ] or biomedicine. [ 3 ] They are also essential to achieve nonwetting properties, with applications in sensors, [ 4 ] water‐harvesting, [ 5 ] depolluting membranes, [ 6 ] or coatings. [ 7 ] Biomimetic studies have indeed demonstrated the role of roughness in nonwetting behaviors and shown the spectacular hydrophobic performances of nanostructured surfaces with reentrant geometries and without any polyfluoroalkyl substances (PFAS).…”

Section: Introductionmentioning

confidence: 99%

Designing Tunable Omniphobic Surfaces by Controlling the Electropolymerization Sites of Carbazole‐Based Monomers

Fradin

Guittard

Darmanin

2021

Macro Chemistry & Physics

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Carbazole‐based monomers are electrodeposited in dichloromethane with different water content and water pH in order to control the surface micro‐ and nanostructures. The presence of water makes the depositions more porous by the formation of a micellar soft template. Due to the presence of the free amine groups, the water acidity plays a role on the structure of the monomers by protonation, limiting their polymerization ways and thus controlling the morphology of the structures. The wetting properties are tuned either by deprotonation of the depositions, or fluorinated postgrafting. Surfaces reach superhydrophobic and oleophobic properties.

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Multifunctional membranes with super-wetting characteristics for oil-water separation and removal of hazardous environmental pollutants from water: A review

Cited by 100 publications

References 99 publications

Design, Development, and Outlook of Superwettability Membranes in Oil/Water Emulsions Separation

Design, Development, and Outlook of Superwettability Membranes in Oil/Water Emulsions Separation

Fabrication and characteristic of 3‐D porous thermoplastic polyurethane/deacetylated cellulose acetate composite foam with outstanding mechanical property and oil/water separation performance

Designing Tunable Omniphobic Surfaces by Controlling the Electropolymerization Sites of Carbazole‐Based Monomers

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