Functionalized Carbon Honeycomb Membranes for Reverse Osmosis Water Desalination

Abstract
Reverse osmosis desalination is a common technique to obtain fresh water from saltwater. Conventional membranes suffer from a trade-off between salt rejection and water permeability, raising a need for developing new classes of membranes. C-based membranes with porous graphene and carbon nanotubes offer high salt rejection, water permeability, and fouling resistance. However, controlling the pore size of these membranes is challenging. Therefore, a carbon honeycomb membrane is studied using classical molecular dynamics simulations. It is reported that functionalization with −COO– groups provides 100% salt rejection with around 1000 times higher water permeability than conventional polyamide membranes. Atomic-level understanding of the effect of the functional groups' location on salt rejection and water permeability is developed.

Citation
Voronin, A. S., Ho, D. T., & Schwingenschlögl, U. (2023). Functionalized Carbon Honeycomb Membranes for Reverse Osmosis Water Desalination. Advanced Materials Interfaces. Portico. https://doi.org/10.1002/admi.202300250

Acknowledgements
The research reported in this publication was supported by King Abdullah University of Science and Technology (KAUST).

Publisher
Wiley

Journal
Advanced Materials Interfaces

DOI
10.1002/admi.202300250

Additional Links
https://onlinelibrary.wiley.com/doi/10.1002/admi.202300250

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