Selective adsorption of multivalent ions into TiC-derived nanoporous carbon |
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Authors: | Sergey Sigalov Mikhael D. Levi Gregory Salitra Doron Aurbach Alar Jänes Enn Lust Ion C. Halalay |
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Affiliation: | 1. Department of Chemistry, Bar-Ilan University, Ramat-Gan 52900, Israel;2. Institute of Physical Chemistry, University of Tartu, 51014 Tartu, Estonia;3. Electrochemical Energy Research Lab, General Motors Global R&D, Warren, MI 48090, USA |
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Abstract: | A TiC-derived carbon (TiC-CDC) was prepared, and the adsorption of large hexacyanocobaltate and tetrabutylammonium ions of approximately same size was examined on this carbon. While selectively absorbing these large ions, it rejects smaller chloride and ammonium ions in mixed electrolyte solutions. The result demonstrates the important role of electrostatic repulsive forces, space-efficient charge packing and hydrophobic ion interactions with the pore walls of TiC-CDC, similar to what is known for a variety of biological membranes. |
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