| 摘要 |
Hollow metal sphere nanostructures are provided to have a larger specific surface area, and to be usable as drug delivery capsules, bio materials, pigment stabilizers of paints, photonic materials, chemical or biochemical sensors and catalysts. A method for preparing hollow metal sphere nanostructures includes the steps of: manufacturing a silica template comprising silica spheres; manufacturing a carbon-silica composite using the silica template; removing silica from the carbon-silica composite to produce a porous carbon template; impregnating the porous carbon template with an aqueous solution of metal salt; adding a reducing agent to the porous carbon template impregnated with the aqueous solution of metal salt, and reducing the metal salt to produce a metal-carbon composite; and heat-treating the metal-carbon composite in an oxidizing atmosphere to remove carbon from the metal-carbon composite, thereby preparing nanostructures composed of hollow metal spheres. Further, a diameter of a pore of the porous carbon template is 50nm to 1mum. |
