Hexagonal Boron Nitride (h-BN) in Solutes Separation
185
8 Conclusions
The 2D h-BN nanosheets have been a topic of remarkable awareness to consider
the typical 2D materials and investigate the practical usage, because of their exclusive structure and characteristics including low density, high mechanical strength,
great thermal conductivity, low friction coefficient, electrical insulation, and excellent
chemical inertness. The structural and functional features of h-BN can well be operated by merging or embedding carbon and graphene due to their atomic similarities.
Thus, various classes of 2D heterostructures and incorporating based on graphene
and h-BN nanosheets have been created with adjustable permeation, chemical, and
mechanical characteristics.
Recently, considerable molecular simulations were carried out to investigate the
water purification performance of h-BN membrane. Using molecular simulations as
an ideal experimental system, allows us to access the microstructure of a system and
to provide a microscopic picture of the water permeation through the membrane. A
tradeoff between water permeability and salt rejection is an important key to assess
the membrane performance in water purification applications. All performed simulations demonstrated that BNNS possesses outstanding water desalination capacity
with efficient water permeability and high salt rejection. Adsorption of arsenic ions
on the h-BN membrane has been also studied using molecular simulations, which
revealed that the arsenic ions adsorption is more favorable on the BNNSs, due to
their strong interaction. The results suggested that h-BN membrane has overall better
desalination performance in comparison to existing commercial techniques, which
make it a promising candidate for future desalination membrane filters and also,
removing arsenic ions from aqueous media. The thorough review represented that
the types of 2D h-BN made by different fabrication methods, which the conventional
ones comprise exfoliation, CVD, and gas-phase epitaxy, with numerous other new
approaches, have been prosperously extended over the past years. Until now, both inplane and vertical stacked h-BN have been successfully synthesized by exfoliation
transfer processes based on top-down methods or bottom-up strategies associated
with CVD approaches. Several other procedures, like mechanical and liquid exfoliation, PVD, surface segregation, and PLD, have been developed to produce various
quality and configurations of 2D h-BN.
Moreover, some experimental works were successfully developed to investigate
the adsorption capacity of h-BN in water treatment. The h-BN indicated great adsorption potential for a wide range of oils, model dyes, and various metallic ions. As we
know, the regeneration of adsorbent is a key factor, which was also examined by
simple methods. The results exhibited that the porous BNNSs membrane possesses
not only excellent potential in the effective adsorption of oils, metallic ions, and
dyes, but also has high recoverability. Actually, these adsorbed materials can be
easily removed from the BNNSs. It demonstrated that h-BN can be used as hopeful
material in water treatment.
185
8 Conclusions
The 2D h-BN nanosheets have been a topic of remarkable awareness to consider
the typical 2D materials and investigate the practical usage, because of their exclusive structure and characteristics including low density, high mechanical strength,
great thermal conductivity, low friction coefficient, electrical insulation, and excellent
chemical inertness. The structural and functional features of h-BN can well be operated by merging or embedding carbon and graphene due to their atomic similarities.
Thus, various classes of 2D heterostructures and incorporating based on graphene
and h-BN nanosheets have been created with adjustable permeation, chemical, and
mechanical characteristics.
Recently, considerable molecular simulations were carried out to investigate the
water purification performance of h-BN membrane. Using molecular simulations as
an ideal experimental system, allows us to access the microstructure of a system and
to provide a microscopic picture of the water permeation through the membrane. A
tradeoff between water permeability and salt rejection is an important key to assess
the membrane performance in water purification applications. All performed simulations demonstrated that BNNS possesses outstanding water desalination capacity
with efficient water permeability and high salt rejection. Adsorption of arsenic ions
on the h-BN membrane has been also studied using molecular simulations, which
revealed that the arsenic ions adsorption is more favorable on the BNNSs, due to
their strong interaction. The results suggested that h-BN membrane has overall better
desalination performance in comparison to existing commercial techniques, which
make it a promising candidate for future desalination membrane filters and also,
removing arsenic ions from aqueous media. The thorough review represented that
the types of 2D h-BN made by different fabrication methods, which the conventional
ones comprise exfoliation, CVD, and gas-phase epitaxy, with numerous other new
approaches, have been prosperously extended over the past years. Until now, both inplane and vertical stacked h-BN have been successfully synthesized by exfoliation
transfer processes based on top-down methods or bottom-up strategies associated
with CVD approaches. Several other procedures, like mechanical and liquid exfoliation, PVD, surface segregation, and PLD, have been developed to produce various
quality and configurations of 2D h-BN.
Moreover, some experimental works were successfully developed to investigate
the adsorption capacity of h-BN in water treatment. The h-BN indicated great adsorption potential for a wide range of oils, model dyes, and various metallic ions. As we
know, the regeneration of adsorbent is a key factor, which was also examined by
simple methods. The results exhibited that the porous BNNSs membrane possesses
not only excellent potential in the effective adsorption of oils, metallic ions, and
dyes, but also has high recoverability. Actually, these adsorbed materials can be
easily removed from the BNNSs. It demonstrated that h-BN can be used as hopeful
material in water treatment.