Development of gradient-wetting Janus wood membrane with high-efficiency fog collection and oil-water separation

Chen, Kaiwen; Zhu, Jianyi; Tan, Yujing; Sun, Fengze; Gan, Jian; Peng, Hui; Zhan, Tianyi; Lyu, Jianxiong

doi:10.1016/j.cej.2023.144356

Cited by 20 publications

(4 citation statements)

References 52 publications

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“…For comparison, the Origin Al and SSS-Al were placed in a fog flow under test parameters, including a fog flow velocity of 0.3 m/s and an air temperature of 20 °C. The samples were held vertically on a fixed holder at a distance of ∼12 cm horizontally and 10 cm vertically from the humidifier with a 45° inclination angle. − …”

Section: Experimental Sectionmentioning

confidence: 99%

Solid-like Slippery Surface with Excellent Comprehensive Performance

Yang

et al. 2023

Langmuir

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Slippery surfaces with outstanding slippery performances have shown application prospects in various fields, including anti-icing, antifouling, droplet transportation, and fog collection. However, practical application of the existing slippery surfaces is limited by lubricating oil loss, low water-slippery ability, low surface robustness, complex processes, and high costs. To overcome these limitations, we propose a facile, low-cost method to create a solid-like slippery Al surface (SSS-Al) by mixing hydrophobic nano-ceramic coating, silicone oil, and nano-SiO 2 , which shows excellent comprehensive performance. The SSS-Al shows exceptional water-slippery ability with a sliding angle of 5°and antifouling ability. Durability and chemical stability tests confirm the high surface durability and chemical stability of SSS-Al. Furthermore, SSS-Al exhibits anti-icing performance, fog collection ability, and electrochemical corrosion resistance, as well as demonstrates remarkable application prospects in important fields such as aerospace and shipbuilding.

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Section: Experimental Sectionmentioning

confidence: 99%

Solid-like Slippery Surface with Excellent Comprehensive Performance

Yang

et al. 2023

Langmuir

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“…The samples were placed on inclined plates with an angle of 10 • and aqueous solution droplets with different pH rolled off the SPCF. The surface was observed and recorded for residual dyed droplets to evaluate its chemical stability [31,32].…”

Section: Versatility Test Of the Superhydrophobic Passive-cooling Bui...mentioning

confidence: 99%

Passive-Cooling Building Coating with Efficient Cooling Performance and Excellent Superhydrophobicity

Yang

Yan

et al. 2023

Materials

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Passive-cooling building materials can achieve cooling without external energy consumption, which is an energy-saving and environmentally friendly cooling method. However, the existing passive-cooling building materials have the limitations of high cost, complicated processes, and a toxic organic solvent, which hinders the passive-cooling technology applied in practical building. To overcome these limitations, we developed a facile, high-efficiency, non-toxic, and superhydrophobic passive-cooling building coating (SPCBC) with an efficient cooling capability and excellent durability that was composed of polydimethylsiloxane and SiO2. The fabricated SPCBC demonstrated a high reflectance and a high emittance, showing a superior cooling capability with a 14 °C temperature drop compared with a bare cement surface on a hot summer day. In addition, the SPCBC could not be wetted or contaminated by muddy water, corrosive aqueous solutions, or dust, which presented an excellent anti-fouling and self-cleaning capability. Moreover, the fabricated SPCBC could work outdoors for 30 days, withstand UV irradiation for 30 days, and resist accelerated aging for 100 h without any significant changes in the superhydrophobicity and the cooling capability, meaning that the SPCBC had an outstanding durability. This work provides a new method to facilitate passive-cooling technology to apply in practical building in hot weather regions of the world.

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“…Meanwhile, Janus membranes are widely used as an ideal material for water treatment [35,36]. Chen et al fabricated a Janus wood (JW) through a unidirectional vacuum impregnation method that had a unidirectional transport of water, and presented high flux (3700 L m −2 h −1 ) and separation efficiency (99.6%) [37]. Sun et al fabricated a Janus membrane via hydrophilic ZnO nanowires modified hydrophobic polyvinylidene fluoride (PVDF) nanofiber.…”

Section: Introductionmentioning

confidence: 99%

The Design of PAN-Based Janus Membrane with Adjustable Asymmetric Wettability in Wastewater Purification

Wang,

Huang,

Zhang

et al. 2024

Materials

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In this paper, an environmentally friendly polyacrylonitrile-based (PAN-based) composite membrane with a Janus structure for wastewater treatment was successfully fabricated. To achieve the optimum adsorption of PAN-based Janus composite membrane, the asymmetric wettability was regulated through electrospinning, resulting in TiO2 modifying PAN as the hydrophilic substrate layer, and PCL gaining a different thickness as the hydrophobic layer. The prepared Janus composite membrane (PAN/TiO2-PCL20) showed excellent oil/water separation performance for diverse surfactant-stabilized oil-in-water emulsions. For n-hexane-in-water emulsion, the permeate flux and separation efficiency reached 1344 L m−2 h−1 and 99.52%, respectively. Even after 20 cycles of separation, it still had outstanding reusability and the separation efficiency remained above 99.15%. Meanwhile, the PAN/TiO2-PCL20 also exhibited an excellent photocatalytic activity, and the removal rate for RhB reached 93.2%. In addition, the research revealed that PAN/TiO2-PCL20 possessed good mechanical property and unidirectional water transfer capability. All results indicated that PAN/TiO2-PCL20 with photocatalysis and oil/water separation performance could be used for practical complex wastewater purification.

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Development of gradient-wetting Janus wood membrane with high-efficiency fog collection and oil-water separation

Cited by 20 publications

References 52 publications

Solid-like Slippery Surface with Excellent Comprehensive Performance

Solid-like Slippery Surface with Excellent Comprehensive Performance

Passive-Cooling Building Coating with Efficient Cooling Performance and Excellent Superhydrophobicity

The Design of PAN-Based Janus Membrane with Adjustable Asymmetric Wettability in Wastewater Purification

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