Abstract
A systematic investigation on the dissolution of metal salts in reverse micellar emulsions in CO2 is reported. In the investigation, copper nitrate was used as a probe to take advantage of the distinctive color and absorption characteristics of the aqueous copper ion, and perfluoropolyether ammonium carboxylate was used as the surfactant. The dissolution and absorption properties of the copper ion in the reverse micelles in CO2 were evaluated under various experimental conditions, such as different salt concentrations, Wo values, and temperatures. The results and their implication for the use of water-in-CO2 microemulsions as solvent systems in the preparation and processing of semiconductor and metal nanomaterials are discussed.
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