Tunable Wettability of a Dual-Faced Covalent Organic Framework Membrane for Enhanced Water Filtration - Archive ouverte HAL
Article Dans Une Revue Journal of the American Chemical Society Année : 2024

Tunable Wettability of a Dual-Faced Covalent Organic Framework Membrane for Enhanced Water Filtration

Farah Benyettou
  • Fonction : Auteur
Asmaa Jrad
Zineb Matouk
  • Fonction : Auteur
Thirumurugan Prakasam
Houeida Issa Hamoud
Guillaume Clet
Sabu Varghese
  • Fonction : Auteur
Gobinda Das
  • Fonction : Auteur
Mostafa Khair
  • Fonction : Auteur
Sudhir Kumar Sharma
  • Fonction : Auteur
Bikash Garai
Rasha G Abdulhalim
  • Fonction : Auteur
Maryam Alkaabi
  • Fonction : Auteur
Jamaliah Aburabie
  • Fonction : Auteur
Sneha Thomas
  • Fonction : Auteur
James Weston
  • Fonction : Auteur
Renu Pasricha
  • Fonction : Auteur
Ramesh Jagannathan
Felipe Gándara
Mohamad El-Roz
Ali Trabolsi

Résumé

Membrane technology plays a central role in advancing separation processes, particularly in water treatment. Covalent organic frameworks (COFs) have transformative potential in this field due to their adjustable structures and robustness. However, conventional COF membrane synthesis methods are often associated with challenges, such as time-consuming processes and limited control over surface properties. Our study demonstrates a rapid, microwave-assisted method to synthesize self-standing COF membranes within minutes. This approach allows control over the wettability of the surface and achieves superhydrophilic and near-hydrophobic properties. A thorough characterization of the membrane allows a detailed analysis of the membrane properties and the difference in wettability between its two faces. Microwave activation accelerates the self-assembly of the COF nanosheets, whereby the thickness of the membrane can be controlled by adjusting the time of the reaction. The superhydrophilic vapor side of the membrane results from −NH2 reactions with acetic acid, while the nearly hydrophobic dioxane side has terminal aldehyde groups. Leveraging the superhydrophilic face, water filtration at high water flux, complete oil removal, increased rejection with anionic dye size, and resistance to organic fouling were achieved. The TTA-DFP-COF membrane opens new avenues for research to address the urgent need for water purification, distinguished by its synthesis speed, simplicity, and superior separation capabilities.
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Dates et versions

hal-04675809 , version 1 (22-08-2024)

Identifiants

Citer

Farah Benyettou, Asmaa Jrad, Zineb Matouk, Thirumurugan Prakasam, Houeida Issa Hamoud, et al.. Tunable Wettability of a Dual-Faced Covalent Organic Framework Membrane for Enhanced Water Filtration. Journal of the American Chemical Society, 2024, 146 (33), pp.23537-23554. ⟨10.1021/jacs.4c07559⟩. ⟨hal-04675809⟩
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