On-demand oil/water separation of 3D Fe foam by controllable wettability

Liu, Yan; Zhan, Bin; Zhang, Kaiteng; Kaya, Cigdem; Stegmaier, Thomas; Han, Zhiwu; Ren, Luquan

doi:10.1016/j.cej.2017.08.081

Cited by 96 publications

(20 citation statements)

References 55 publications

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“…The natural water resource has been polluted severely by the accidental oil leakage, petroleum spills and industrial emission (Liu, et al, 2018). Water protection and purification as a detective task accelerated the development of porous materials, such as the activated carbon, CNTs (Yan, et al, 2019), polypropylene sponge , polyurethane foam (Kong, et al, 2018;Nikkhah, Zilouei, Asadinezhad, & Keshavarz, 2015) and wood fibers (Likon, Remškar, Ducman, & Švegl, 2013).…”

Section: Water Pollutants Adsorption (Phosphate and Metal Ionsmentioning

confidence: 99%

The advances of polysaccharide-based aerogels: Preparation and potential application

Wang

et al. 2019

Carbohydrate Polymers

151

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Highlights 1. Polysaccharide-based aerogels can be prepared with supercritical or freeze drying. 2. Polysaccharide-based aerogels may have nm-μm pore size distribution. 3. Aerogels with open or close pores have different functions and applications. 4. The formula and drying methods can change the pore structure and functions. 5. Advances and future challenges of polysaccharide-based aerogels are clarified. Highlights (for review)

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Section: Water Pollutants Adsorption (Phosphate and Metal Ionsmentioning

confidence: 99%

The advances of polysaccharide-based aerogels: Preparation and potential application

Wang

et al. 2019

Carbohydrate Polymers

151

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“…Oil-water separation is a hot topic in the industry field and daily life due to the oil leakage, increasing oily industrial wastewater and so on [108,134,135] . Recently, materials with special interfacial superwettability have proven to be highly efficient to solve the practical problem, such as membrane-based separation materials, porous sponge-based absorption materials, metal/covalent-organic framework meshes, porous carbon materials, fabrics, and coatings etc [136][137][138][139][140] . Comparatively, the smart materials with switchable wettability by external excitation also can be used for complex environments and mixed solvents with high flux and high selectivity, which is favor to separate the oil/water mixtures on-demand, efficiently and energy-savingly [141][142][143] .…”

Section: Oil-water Separationmentioning

confidence: 99%

Smart Bionic Surfaces with Switchable Wettability and Applications

Fan

Liu

et al. 2021

J Bionic Eng

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In order to satisfy the needs of different applications and more complex intelligent devices, smart control of surface wettability will be necessary and desirable, which gradually become a hot spot and focus in the field of interface wetting. Herein, we review interfacial wetting states related to switchable wettability on superwettable materials, including several classical wetting models and liquid adhesive behaviors based on the surface of natural creatures with special wettability. This review mainly focuses on the recent developments of the smart surfaces with switchable wettability and the corresponding regulatory mechanisms under external stimuli, which is mainly governed by the transformation of surface chemical composition and geometrical structures. Among that, various external stimuli such as physical stimulation (temperature, light, electric, magnetic, mechanical stress), chemical stimulation (pH, ion, solvent) and dual or multi-triggered stimulation have been sought out to realize the regulation of surface wettability. Moreover, we also summarize the applications of smart surfaces in different fields, such as oil/water separation, programmable transportation, anti-biofouling, detection and delivery, smart soft robotic etc. Furthermore, current limitations and future perspective in the development of smart wetting surfaces are also given. This review aims to offer deep insights into the recent developments and responsive mechanisms in smart biomimetic surfaces with switchable wettability under external various stimuli, so as to provide a guidance for the design of smart surfaces and expand the scope of both fundamental research and practical applications.

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“…The oil-water separation e ciency is determined by the weight ratio of the oil intercepted on the membrane after separation to the oil in the oil-water mixture before separation. The calculation formula is as follows (Liu et al 2018;Zhang et al 2017):…”

Section: )mentioning

confidence: 99%

Transition Sandwich Janus Membrane of Cellulose Acetate and Polyurethane Nanofibers For Oil-Water Separation

Zhang¹,

Yang²,

Zhou³

et al. 2021

Preprint

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Through sequential electrospinning, a sandwich Janus membrane (PU-(CA/PU)-CA) was constructed with hydrophobic polyurethane (PU) nanofiber membrane as the top layer, cellulose acetate/polyurethane (CA/PU) blend nanofiber membrane as the intermediate transition layer and hydrophilic cellulose acetate (CA) nanofiber membrane as the bottom layer. The effects of membrane structure, composition and thickness on the mechanical properties, permeability and separation ability of PU-(CA/PU)-CA nanofiber membrane were studied. The results show that the transition sandwich structure PU-(CA/PU)-CA membrane has good mechanical properties, high permeability and selective separation ability, and can realize the unidirectional transmission of water and efficient oil-water separation. When the membrane thickness is 80 μm, the hydraulic permeability is 3.4×104 L/(m2 h bar), the oil-water separation efficiency reaches 99%, and the tensile strength is 95.8% higher than that of the double-layer PU-CA membrane without intermediate transition layer. The thermal stability and antifouling ability of PU-(CA/PU)-CA nanofiber membrane have also been improved, and the reusability is good. CA/PU transition interlayer improves the interfacial compatibility between CA and PU nanofiber membrane, enhances the performance of PU-(CA/PU)-CA nanofiber Janus membrane, and shows its application prospect in the field of separation and purification.

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On-demand oil/water separation of 3D Fe foam by controllable wettability

Cited by 96 publications

References 55 publications

The advances of polysaccharide-based aerogels: Preparation and potential application

The advances of polysaccharide-based aerogels: Preparation and potential application

Smart Bionic Surfaces with Switchable Wettability and Applications

Transition Sandwich Janus Membrane of Cellulose Acetate and Polyurethane Nanofibers For Oil-Water Separation

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