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Related Experiment Video

Updated: May 13, 2025

Preparation of Carbon Nanosheets at Room Temperature
10:44

Preparation of Carbon Nanosheets at Room Temperature

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Water in nanoporous hexagonal boron nitride nanosheets: a first-principles study.

Juliana A Gonçalves1, Ronaldo J C Batista2, Marcia C Barbosa1

  • 1Departamento de Física, Universidade Federal do Rio Grande do Sul, Av. Paulo Gama, Farroupilha, 90040-060, Porto Alegre - Rio Grande do Sul, Brazil.

Beilstein Journal of Nanotechnology
|April 15, 2025
PubMed
Summary

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Empirical no-go principles for rigid three-point water models: A physically guided manifold of optimality.

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Performance comparison of slit and nanoporous graphene oxide membranes in water desalination.

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Hexagonal boron nitride (h-BN) nanoporous membranes show potential for water filtration. Pore shape and termination influence stability and water interactions, impacting filtration efficiency.

Area of Science:

  • Materials Science
  • Nanotechnology
  • Physical Chemistry

Background:

  • Nanoporous membranes are crucial for water filtration and desalination.
  • Hexagonal boron nitride (h-BN) is a promising material for these applications.
  • Understanding pore behavior in h-BN is key to optimizing membrane performance.

Purpose of the Study:

  • To analyze pore behavior in freestanding h-BN monolayers interacting with water.
  • To investigate how pore shape and edge termination affect h-BN stability and water interactions.
  • To evaluate the potential of h-BN membranes for water treatment.

Main Methods:

  • Computational analysis of pore behavior in h-BN monolayers.
  • Simulation of interactions between h-BN pores and water molecules.
Keywords:
DFTboron nitridenanoporous materialswater

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  • Investigation of the effects of N-H, B-H, and OH terminations on pore stability.

    • Main Results:

    • Triangular and rhombic pores in h-BN cause wrinkles due to hydrogen orbital repulsion.
    • N-H or B-H pair addition mitigates deformations; stability varies with termination.
    • Rhombic pores show higher water affinity and hydrogen bonding with N-H termination than triangular pores.

    Conclusions:

    • Pore shape and termination significantly influence h-BN membrane stability and hydrophobicity.
    • Edge functionalization can control water interactions and flow through h-BN pores.
    • h-BN membranes offer tunable properties for advanced water filtration and desalination.