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Updated: Jan 22, 2026

Crystallizing Membrane Proteins for Structure Determination using Lipidic Mesophases
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Hierarchically Structured Janus Membrane Surfaces for Enhanced Membrane Distillation Performance.

Nick Guan Pin Chew1, Yujun Zhang1, Kunli Goh1

  • 1Singapore Membrane Technology Centre, Nanyang Environment and Water Research Institute , Nanyang Technological University , Singapore 637141 , Singapore.

ACS Applied Materials & Interfaces
|July 6, 2019
PubMed
Summary
This summary is machine-generated.

Novel Janus membranes with multilevel roughness combat membrane fouling and pore wetting in membrane distillation (MD). These antifouling and antibacterial membranes offer enhanced performance for treating challenging feed streams.

Keywords:
Janus membranemembrane distillationmultilevel hierarchical structureoilpolydopaminesilver nanoparticlesurfactant

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Area of Science:

  • Materials Science
  • Chemical Engineering
  • Environmental Science

Background:

  • Commercial hydrophobic poly(vinylidene fluoride) (PVDF) membranes face fouling and wetting issues in membrane distillation (MD).
  • These limitations hinder the treatment of surfactant- and oil-containing feed streams using MD.

Purpose of the Study:

  • To design and fabricate novel Janus membranes with multilevel roughness for enhanced antifouling and wetting resistance.
  • To improve the performance of PVDF membranes for membrane distillation applications.

Main Methods:

  • Developed Janus membranes via oxidant-induced dopamine polymerization and in situ silver nanoparticle (AgNP) immobilization on PVDF hollow fiber substrates.
  • Engineered hierarchically structured surfaces with multilevel roughness to mitigate foulant adhesion and prevent pore wetting.

Main Results:

  • The Janus membranes exhibited superior antifouling properties and salt rejection compared to single-level structured membranes.
  • AgNPs contributed to improved surface hydrophilicity and a self-healing mechanism, enhancing membrane performance.
  • The membranes demonstrated significant antibacterial properties against *Bacillus acidicola*.

Conclusions:

  • Hierarchically structured Janus membranes with multilevel roughness effectively mitigate membrane fouling and pore wetting.
  • These engineered membranes offer a promising solution for treating low-surface-tension feed streams in membrane distillation.
  • The development paves the way for more robust and efficient membrane distillation processes.