A photo-induced ZnO coated mesh for on-demand oil/water separation based on switchable wettability

Liu, Yan; Li, Jian; Li, Weijun; Zha, Fei; Feng, Huan; Hu, Dong‐Cheng

doi:10.1016/j.matlet.2015.10.051

Cited by 77 publications

(23 citation statements)

References 13 publications

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“…The blue dotted line indicates the end of the membrane. Unlike previous investigations that have demonstrated spreading and permeability of low viscosity oils, [26][27][28] here hydraulic oil (190 cP), a very high viscosity oil, was experimented. Figure 5 shows sequential snapshots of hydraulic oil droplets dropped on the as-prepared square (2 cm × 2 cm) electrospun membrane (thickness: c.a.…”

Section: Resultsmentioning

confidence: 99%

Facile transformation of soot nanoparticles into nanoporous fibers via single-step electrospinning

et al. 2017

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A facile technique to transform candle soots into nanoporous fibers via electrospinning of mixed solution of candle soots and polyvinylidene fluoride (PVDF) has been demonstrated for the first time. Due to insolubility of soot nanoparticles and good solubility of PVDF polymer in DMF/acetone solvents, the soot molecules are heterogeneously dispersed in the mixed solutions. The selection of an appropriate polymer concentration resulted in a good dispersion of the low-density soot nanoparticles which can be held for electrospinning. The electrospinning experiment shows that soot nanoparticles can be smoothly bonded with PVDF molecules to form nanoporous fibers. The unique superhydrophobic and superoleophilic properties of the as-prepared electrospun fibrous membrane were demonstrated by subjecting it to various aqueous liquids and oils. This work provides a simple way to transform low-density nanoparticles into high-performance nanoporous nanofibers, which should broaden the applications of electrospinning.

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Section: Resultsmentioning

confidence: 99%

Facile transformation of soot nanoparticles into nanoporous fibers via single-step electrospinning

et al. 2017

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“…Thus, many reports demonstrated that 2D PU membrane was prepared by spray-coating methods for oil/ water separation. [32][33][34][35] For example, Li et al 33,34 reported that the membrane was prepared through spraying TiO 2 nanoparticles (or ZnO nanoparticles) and PU mixture solutions onto copper mesh (or stainless steel mesh) for oil/water separation, where only the water permeated through the mesh while the oil was repelled on the mesh. Here, the role of waterborne PU was to increase the cohesive strength between TiO 2 nanoparticles (or ZnO nanoparticles) and copper mesh (or stainless steel mesh), thus increasing the stability of oil/water separation cycles.…”

Section: Spray-coating Methodsmentioning

confidence: 99%

“…Here, the role of waterborne PU was to increase the cohesive strength between TiO 2 nanoparticles (or ZnO nanoparticles) and copper mesh (or stainless steel mesh), thus increasing the stability of oil/water separation cycles. Yan et al 35 prepared a photoinduced mesh for on-demand oil/water separation based on the switchable wettability. This multifunctional coated surface was fabricated by spraying hydrophobic ZnO nanoparticles and waterborne …”

Section: Spray-coating Methodsmentioning

confidence: 99%

Recent Progress of Polyurethane-Based Materials for Oil/Water Separation

Guo

Liu

Dang

et al. 2017

NANO

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With the development of society, oil pollution has become more and more serious, it is becoming a global issue to separate oil and water mixture. Currently, a variety of functional materials have been successfully prepared for oil/water separation. Among them, polyurethane is an attractive candidate due to its low cost, wear-resistance and excellent mechanical properties. This report summarizes the design strategy of polyurethane-based materials and their applications in oil/ water separation. The progress made so far will guide further development of polyurethane-based materials for oil/water separation.

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“…Yan et al subsequently reported similar on-demand photoinduced oil/ water separation based on the switchable wettability of the mesh between superhydrophobic and superhydrophilic/underwater superoleophobic by alternative UV illumination and heat treatment. [133] Photoinduced selective absorption and desorption of oil is another effective way to achieve oil-water separation. For instance, Zhu et al reported a photoinduced separation process based on oil absorption and desorption by photoresponsive superhydrophobic-hydrophilic conversion of spiropyran-derivative-melamine-formaldehyde sponge composites with vis/UV-light irradiation.…”

Section: Photoinduced Selective Permeation For Separationmentioning

confidence: 99%

External‐Field‐Induced Gradient Wetting for Controllable Liquid Transport: From Movement on the Surface to Penetration into the Surface

Zhang

et al. 2017

Advanced Materials

104

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External‐field‐responsive liquid transport has received extensive research interest owing to its important applications in microfluidic devices, biological medical, liquid printing, separation, and so forth. To realize different levels of liquid transport on surfaces, the balance of the dynamic competing processes of gradient wetting and dewetting should be controlled to achieve good directionality, confined range, and selectivity of liquid wetting. Here, the recent progress in external‐field‐induced gradient wetting is summarized for controllable liquid transport from movement on the surface to penetration into the surface, particularly for liquid motion on, patterned wetting into, and permeation through films on superwetting surfaces with external field cooperation (e.g., light, electric fields, magnetic fields, temperature, pH, gas, solvent, and their combinations). The selected topics of external‐field‐induced liquid transport on the different levels of surfaces include directional liquid motion on the surface based on the wettability gradient under an external field, partial entry of a liquid into the surface to achieve patterned surface wettability for printing, and liquid‐selective permeation of the film for separation. The future prospects of external‐field‐responsive liquid transport are also discussed.

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A photo-induced ZnO coated mesh for on-demand oil/water separation based on switchable wettability

Cited by 77 publications

References 13 publications

Facile transformation of soot nanoparticles into nanoporous fibers via single-step electrospinning

Facile transformation of soot nanoparticles into nanoporous fibers via single-step electrospinning

Recent Progress of Polyurethane-Based Materials for Oil/Water Separation

External‐Field‐Induced Gradient Wetting for Controllable Liquid Transport: From Movement on the Surface to Penetration into the Surface

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