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US 2011/0218304 A1Published application
Low cost and high yield method of making large quantity and homogenous metal nanoparticles and controlling their solubility
AssigneeTecona Technologies, Inc.
InventorWeili SHI
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Abstract
The present invention is directed to a low cost and high yield synthetic method of producing large quantity and homogenous metal nanoparticles, which are capped by both hydrophilic and hydrophobic surfactants and soluble in water, water-miscible solvents, and non-polar solvents. The solubility of metal nanoparticles in different solvents can be controlled by simply changing the ratio of hydrophilic and hydrophobic surfactants.
Claims18
A process comprising steps of (a) obtaining a solution containing a reducible metal precursor dissolved in water or water-miscible solvents;
- (b) obtaining an aqueous solution containing hydrophilic surfactants;
- (c) dissolving hydrophobic surfactants in a water-miscible solvent. (d) admixing above three solutions under vigorous agitation to form a homogenous mixture solution;
- (e) adding reducing agent solution to above mixture solution to produce nanoparticles;
- (f) separating metal nanoparticles from the liquid solution.
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Dependencies are inferred from the claim text.