Abstract
Water desalination through membranes is an excellent way to access drinking water. Among two-dimensional nanosheet membranes for water desalination, carbon nitride (C2N) nanosheet has been considered as a promising membrane by researchers because of its inherent structure and mechanical strength. In this work, molecular simulations were used to study the efficiency of the pristine C2N nanosheet in the water desalination process using applied hydrostatic pressure to the system. In our simulation box, the C2N nanosheet was placed in the center of the simulation cell in an aqueous ionic solution. Due to the applied pressure to the system, water molecules overcame the forces that prevented them from passing through the C2N, and therefore, they passed through the C2N membrane. The water flux and water permeability of considered systems were obtained. Also, for more investigation, water density, radial distribution function of ions, the water density map, and hydrogen bonds of the system were conducted. The results demonstrated that the C2N membrane is an effective membrane for desalination even at low pressures with the acceptable water flux and salt rejection.
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