Fabrication of janus type bi-layer polymeric membranes for advance water purification

Chakraborty, Triparna; Kanth, P. Chandra; Trivedi, Maitrayee U.; Tripathi, Brijesh; Pandey, Manoj Kumar

doi:10.1016/j.matpr.2020.11.753

Cited by 6 publications

(1 citation statement)

References 15 publications

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“…When G > Fn-c, water droplets passed through the PAN/TiO2-PCL20 by gravity and the capillary force of the substrate (Figure 9a). The result showed that the asymmetric wettability of PAN/TiO2-PCL20 exhibited unidirectional water transfer capability within a certain water pressure range [57,58].…”

Section: Unidirectional Water Transfermentioning

confidence: 98%

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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Section: Unidirectional Water Transfermentioning

confidence: 98%