Coated nanoparticles
AssigneeUniversity of Florida
InventorsWeihong Tan, Swadeshmukul Santra, Peng Zhang, Rovelyn Tapec, Jon Dobson
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Abstract
Disclosed are silica-coated nanoparticles and a process for producing silica-coated nanoparticles. Silica-coated nanoparticles are prepared by precipitating nano-sized cores from reagents dissolved in the aqueous compartment of a water-in-oil microemulsion. A reactive silicate is added to coat the cores with silica. Also disclosed are methods for functionalizing silica-coated nanoparticles for use in a variety of applications.
Claims63
A plurality of nanoparticles having a mean size of less than 1 micron, each of said nanoparticles comprising (a) a core comprising a pigment and (b) a silica shell enveloping the core, wherein the pigment is an inorganic salt selected from potassium permanganate, potassium dichromate, nickel sulfate, cobalt-chloride, iron(III) chloride, and copper nitrate.
A plurality of nanoparticles having a mean size of less than 1 micron, each of said nanoparticles comprising (a) a core comprising a dye, and (b) a silica shell enveloping the core.
A plurality of nanoparticles having a mean size of between 2 nm and 10 nm, each of said nanoparticles comprising (a) a core comprising a metal and (b) a silica shell enveloping the core.
A plurality of nanoparticles having a mean size of less than 1 micron, each of said nanoparticles comprising (a) a core comprising a metal and (b) a silica shell enveloping the core, wherein the size distribution of the nanoparticles has a standard deviation of no more than 25 percent.
A plurality of nanoparticles having a mean size of less than 1 micron, each of said nanoparticles comprising (a) a core comprising Ag, and (b) a silica shell enveloping the core.
Dependencies are inferred from the claim text.