Nanoporous Carbon Nitride: A High Efficient Filter for Seawater Desalination

TL;DR

This paper demonstrates that a graphene-like carbon nitride (g-C2N) membrane, with tunable nanopores, significantly outperforms traditional reverse osmosis membranes in seawater desalination, offering a promising solution to water scarcity.

Contribution

The study introduces a novel g-C2N membrane with strain-tunable nanopores that greatly enhances water permeability for seawater desalination.

Findings

Water permeability is improved by two orders of magnitude.

Nanopores can be modulated under tensile strain for optimal performance.

The g-C2N filter shows high efficiency in molecular dynamics simulations.

Abstract

The low efficiency of commercially-used reverse osmosis (RO) membranes has been the main obstacle in seawater desalination application. Here, we report the auspicious performance, through molecular dynamics simulations, of a seawater desalination filter based on the recently-synthesized graphene-like carbon nitride (g-C2N) [Nat. Commun., 2015, 6, 6486]. Taking advantage of the inherent nanopores and excellent mechanical properties of g-C2N filter, highly efficient seawater desalination can be achieved by modulating the nanopores under tensile strain. The water permeability can be improved by two orders of magnitude compared to RO membranes, which offers a promising approach to the global water shortage solution.