Proton transport through water-filled carbon nanotubes

Dellago, Christoph; Naor, Mor M.; Hummer, Gerhard

doi:10.1103/PhysRevLett.90.105902

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Proton transport through water-filled carbon nanotubes

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Dellago, C., Naor, M. M., & Hummer, G. (2003). Proton transport through water-filled carbon nanotubes. Physical Review Letters, 90(10): 105902. doi:10.1103/PhysRevLett.90.105902.

Cite as: https://hdl.handle.net/21.11116/0000-0008-E112-5

Abstract

Proton transfer along 1D chains of water molecules inside carbon nanotubes is studied by simulations. Ab initio molecular dynamics and an empirical valence bond model yield similar structures and time scales. The proton mobility along 1D water chains exceeds that in bulk water by a factor of 40, but is reduced if orientational defects are present. Excess protons interact with hydrogen-bonding defects through long-range electrostatics, resulting in coupled motion of protons and defects.