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Issue 43, 2013
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Room-temperature silver-containing liquid metal salts with nitrate anions

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The synthesis, structural, thermal and electrochemical properties of fluorine-free silver-containing ionic liquids are presented. The ionic liquid cations are formed by a silver(I) ion surrounded by two 1-alkylimidazole ligands, with the counter anions being nitrate ions. Depending on the alkyl chain length, the complexes were found to be liquids at room temperature or melting slightly above this. For the solid compounds it was possible to elucidate the structure by single crystal X-ray analysis. The ionic liquids are electroactive, have good mass transport properties and can be used for the electrodeposition of silver at high current densities. The thermal properties and stability of these compounds were tested by differential scanning calorimetry and thermogravimetric analysis. The viscosity of the ionic liquids follows a Vogel–Tamman–Fulcher relationship as a function of temperature. The electrochemical properties of the complexes were tested by cyclic voltammetry and the resulting electrodeposits were examined using scanning electron microscopy and atomic force microscopy.

Graphical abstract: Room-temperature silver-containing liquid metal salts with nitrate anions

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The article was received on 01 Aug 2013, accepted on 13 Sep 2013 and first published on 04 Oct 2013

Article type: Paper
DOI: 10.1039/C3CP53263A
Citation: Phys. Chem. Chem. Phys., 2013,15, 18934-18943
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    Room-temperature silver-containing liquid metal salts with nitrate anions

    S. Schaltin, N. R. Brooks, J. Sniekers, D. Depuydt, L. Van Meervelt, K. Binnemans and J. Fransaer, Phys. Chem. Chem. Phys., 2013, 15, 18934
    DOI: 10.1039/C3CP53263A

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