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Full-Text Articles in Nanoscience and Nanotechnology
Transport Of Water And Ions Through Single-Walled Armchair Carbon Nanotubes: A Molecular Dynamics Study, Michelle Patricia Aranha
Transport Of Water And Ions Through Single-Walled Armchair Carbon Nanotubes: A Molecular Dynamics Study, Michelle Patricia Aranha
Doctoral Dissertations
The narrow hydrophobic interior of a carbon nanotube (CNT) poses a barrier to the transport of water and ions, and yet, unexpectedly, numerous experimental and simulation studies have confirmed fast water transport rates comparable to those seen in biological aquaporin channels. These outstanding features of high water permeability and high solute rejection of even dissolved ions that would typically require a lot of energy for separation in commercial processes makes carbon nanotubes an exciting candidate for desalination membranes. Extending ion exclusion beyond simple mechanical sieving by the inclusion of electrostatics via added functionality to the nanotube bears promise to not …
Effect Of Pressure On Ion Selectivity In Biomimetic Nanopores With Ph-Tunable Polyelectrolyte Brushes, Hui-Xia Shan, Zhen-Ping Zeng, Li-Xian Ye, Feng Shu
Effect Of Pressure On Ion Selectivity In Biomimetic Nanopores With Ph-Tunable Polyelectrolyte Brushes, Hui-Xia Shan, Zhen-Ping Zeng, Li-Xian Ye, Feng Shu
Journal of Electrochemistry
Biomimetic ionic channels of synthetic nanopores functionalized with pH-tunable polyelectrolyte (PE) brushes have significant application potentials for active transport control of ions, fluids, and bioparticles on the nanoscale. Ion selectivity is an important phenomenon of ion transport in nanofluidic devices, which has great theoretical significance and practical values. We propose a pressure control scheme to control the ion selectivity in biomimetic nano-systems with pH-tunable PE brushes. Effects of the solution properties (i.e., pH and background salt concentration), the applied voltage and pressure on ion selectivity are comprehensively investigated. The results show that ion selectivity is sensitive to pressure. Unlike the …