Synthesis of metallic nanoshells on porphyrin-stabilized emulsions
| DWPI Title: Manufacture of metal nanoshell involves adding seed metal ion and electron donor to emulsion of lipoporphyrin-stabilized nanodroplets, exciting, reacting with electron donor, reducing seed metal ion, adding shell metal ion and reducing |
| Abstract: Metal nanostructures formed by photocatalytic interfacial synthesis using a porphyrin-stabilized emulsion template and the method for making the nanostructures. Catalyst-seeded emulsion droplets are employed as templates for hollow-nanoshell growth. The hollow metal nanospheres may be formed with or without inclusions of other materials. |
| Use: Manufacture of metal nanoshell. |
| Advantage: The metal nanoshell is economically manufactured with low density, large surface area and favorable optical property. |
| Novelty: An emulsion comprising lipoporphyrin-stabilized nanodroplets is formed. The emulsion comprises photocatalytic lipoporphyrin, water and an organic liquid. A seed metal ion and an electron donor species are added to emulsion and illuminated. The excited photocatalytic lipoporphyrin is reacted with electron donor species to form a reduced photocatalytic lipoporphyrin, seed metal ion is reduced to form a seed metal nanoparticles at water/organic liquid interface. A shell metal ion is added and catalytically reduced to form a metallic nanoshell. |
| Filed: 6/11/2007 |
| Application Number: US2007760850A |
| Tech ID: SD 10246.0 |
| This invention was made with Government support under Contract No. DE-NA0003525 awarded by the United States Department of Energy/National Nuclear Security Administration. The Government has certain rights in the invention. |
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