Journal
DALTON TRANSACTIONS
Volume 41, Issue 1, Pages 219-227Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c1dt11578b
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Funding
- QUILL
- Industrial Advisory Board
- EPSRC [EP/D029538/1]
- Engineering and Physical Sciences Research Council [EP/D029538/1] Funding Source: researchfish
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Two stable nanofluids comprising of mixed valent copper(I,II) oxide clusters (<1 nm) suspended in 1-butyl-3-methylimidazolium acetate, [C(4)mim][OAc], and copper(II) oxide nanoparticles (<50 nm) suspended in trioctyl(dodecyl) phosphonium acetate, [P-88812][OAc], were synthesised in a facile one-pot reaction from solutions of copper(II) acetate hydrate in the corresponding ionic liquids. Formation of the nanostructures was studied using C-13 NMR spectroscopy and differential scanning calorimetry (DSC). From a solution of Cu(OAc)(2) in 1-ethyl-3-methylimidazolium acetate, [C(2)mim][OAc], crystals were obtained that revealed the structure of [C(2)mim][Cu-3(OAc)(5)(OH)(2)(H2O)]center dot H2O, indicating the formation of copper hydroxo-clusters in the course of the reaction. Synthesised nanostructures were studied using transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS). Physical properties of the prepared IL-nanofluids were examined using IR and UV-VIS spectroscopy, thermogravimetric analysis (TGA), differential scanning calorimetry (DSC) and densitometry.
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