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Issue 13, 2013
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Buffered chlorogallate(III) ionic liquids and electrodeposition of gallium films

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Abstract

Buffering of Lewis acidic chlorometallate ionic liquids is a useful tool to modify their properties for electrochemical and catalytic applications. Lewis acidic chlorogallate(III) ionic liquids containing the 1-octyl-3-methylimidazolium cation, buffered with sodium chloride, were studied using 71Ga NMR spectroscopy and cyclic voltammetry. All the studied Lewis acidic compositions (0.50 < χGaCl3 ≤ 0.75) could be buffered to mild or moderate acidity, but not to neutrality. Electrodeposition of gallium from such buffered systems was possible, yielding deposits of improved morphology over the unbuffered ionic liquids, due to the constant melt composition maintained by the buffer. These findings were in a stark contrast with older studies on chloroaluminate(III) ionic liquids buffered with sodium chloride.

Graphical abstract: Buffered chlorogallate(iii) ionic liquids and electrodeposition of gallium films

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Publication details

The article was received on 30 Nov 2012, accepted on 28 Jan 2013 and first published on 18 Feb 2013


Article type: Paper
DOI: 10.1039/C3CP44294B
Citation: Phys. Chem. Chem. Phys., 2013,15, 4518-4526
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    Buffered chlorogallate(III) ionic liquids and electrodeposition of gallium films

    K. R. Seddon, G. Srinivasan, M. Swadźba-Kwaśny and A. R. Wilson, Phys. Chem. Chem. Phys., 2013, 15, 4518
    DOI: 10.1039/C3CP44294B

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