Production of metal nanoparticles
AssigneeCabot Corporation
InventorsKarel Vanheusden, Klaus Kunze, Hyungrak Kiim, Aaron D. Stump, Allen B. Schult, Mark J. Hampden-Smith, Chuck Edwards, Anthony R. James, James Caruso, Toivo T. Kodas, Scott Thomas Haubrich, Mark H. Kowalski
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Abstract
A process for the production of metal nanoparticles. The process comprises a rapid mixing of a solution of at least about 0.1 mole of a metal compound that is capable of being reduced to a metal by a polyol with a heated solution of a polyol and a substance that is capable of being adsorbed on the nanoparticles.
Claims148
A process for the production of metal nanoparticles, wherein the process comprises a rapid mixing of a solution of at least about 0.1 mole of a metal compound that is capable of being reduced to a metal by a polyol with a heated solution that comprises a polyol and a substance that is capable of being adsorbed on the nanoparticles, wherein the rapid mixing comprises combining the solutions within not more than about 1 minute.
A process for the production of metal nanoparticles, wherein the process comprises a rapid mixing of a solution of at least about 0.25 mole of a compound of at least one metal selected from gold, silver, palladium, platinum, rhodium, copper, nickel and cobalt with a heated solution that comprises a polyol and a polymer that is capable of substantially preventing an agglomeration of the nanoparticles, wherein the rapid mixing comprises combining the solutions within not more than about 1 minute.
A process for the production of silver nanoparticles, wherein the process comprises a rapid mixing of a solution of at least about 0.5 mole of a silver compound with a heated solution which comprises a polyol and a vinyl pyrrolidone polymer, wherein the rapid mixing comprises combining the solutions within not more than about 1 minute.
A process for the production of silver nanoparticles, wherein the process comprises a one-shot addition of a solution of at least about 0.75 mole of a silver compound in at least one of ethylene glycol and propylene glycol to a heated solution of polyvinylpyrrolidone in at least one of ethylene glycol and propylene glycol, wherein the solution of the silver compound is at a temperature of not higher than about 30° C., the polyvinylpyrrolidone solution is at a temperature of at least about 110° C., a total volume of the solution of the silver compound and the polyvinylpyrrolidone solution is from about 3 to about 4 liters per one mole of the silver compound, a volume ratio of the polyvinylpyrrolidone solution and the solution of the silver compound is from about 4:1 to about 6:1 and a molar ratio of vinyl pyrrolidone units in the polyvinylpyrrolidone and the silver compound is from about 5:1 to about 15:1.
Dependencies are inferred from the claim text.