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In this paper, one nanoporous graphene grafting several zwitterionic polymer chains was designed as the osmosis membrane for seawater desalination. Using molecular dynamics simulation, the efficiency and mechanism of salt rejection were discussed. The simulated results showed that the zwitterionic polymer ...
The existence of nanometer channels in desalination membranes is responsible for well-defined sieving features such as high selectivity for small ions or molecules to move across the membrane while blocking larger ones. MXene nanosheets can reject molecules and ions in either supported or free-standing...
timeshigherthanthestate-of-the-artnanoporousgraphene.Strikingly,waterpermeabilityacrossgraphyne exhibitsunexpectednonlineardependenceontheporesize.Thiscounter-intuitivebehaviorisattributedto thequantizednatureofwaterflowatthenanoscale,whichhaswideimplicationsincontrollingnanoscale ...
In the RO process, water is forced to transport across thesemipermeable membraneby the high pressure. The need for high pressure indicates that, although more efficient than previous thermal-based desalination methods, RO is still expensive in terms of energy[32]. Thus, challenges still exist in...
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