Solvation Properties of Ions in Confined Aqueous Solutions from First Principles Molecular Dynamics

ORAL

Abstract

The physiochemical properties of solvated ions in extreme conditions, such as nanoconfinement, are critical to the engineering of novel energy technologies. In this work, we compare the properties of various alkali halide solutions in the bulk and under confinement in single-walled carbon nanotubes of 1.5 nm diameter, as obtained from first-principles molecular dynamics simulations [1]. In particular, we present an analysis of solvation structures and hydrogen bond characters as a function of ionic species and the degree of confinement. In addition, we discuss the self-diffusion of ions and water, as well as the local and global effects of ions on the structure and dynamics of liquid water.
[1] www.qboxcode.org

*This work was supported by the DOE NNSA Stewardship Science Graduate Fellowship
Part of this work was performed under the auspices of the U.S. DOE by Lawrence Livermore National Laboratory under Contract DE-AC52-07NA27344.

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Presenters

  • Viktor Rozsa

    • Univ of Chicago

Authors

  • Viktor Rozsa

    • Univ of Chicago

  • Tuan Anh Pham

    • Lawrence Livermore National Laboratory

  • Eric Schwegler

    • Lawrence Livermore National Laboratory
    • Lawrence Livermore Natl Lab

  • Giulia Galli

    • Institute for Molecular Engineering, University of Chicago
    • Univ of Chicago
    • University of Chicago
    • Institute for Molecular Engineering, University of Chicago; Argonne National Laboratory
    • Institute for Molecular Engineering, University of Chicago, Chicago, IL, United States and Materials Science Division, Argonne National Laboratory
    • University of Chicago; Argonne National Laboratory
    • Institute for Molecular Engineering, Univ of Chicago