Abstract

Water has unique properties in the nanopores of activated carbons and carbon nanotubes, which are apparently different from those of typical adsorbed molecules such as N 2 and Ar. Here the mechanism of water vapor adsorption in carbon nanopores and the adsorbed structures are reviewed using adsorption isotherms, X-ray scattering, and molecular simulations. Water cluster formation in hydrophobic carbon nanopores promoted self-adsorption of water by gaining stability. Water stabilization is a result of anomalously strong hydrogen bonding between water molecules in such carbon nanopores. On the other hand, in the case of an aqueous electrolyte solution, the formation of a hydration shell around ions is dominant in carbon nanopores. These findings promote our understanding of water nanoscience and nanotechnology as well as electrochemical nanoscience. [TANSO 2014 (No. 263) 91–103.]

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