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US 5,071,674 AGranted
Method for producing large silica sol-gels doped with inorganic and organic compounds
AssigneeUniversity of Florida
InventorsJean-Luc Nogues, Larry L. Hench, Shi-Ho Wang
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Abstract
A method of producing doped, monolithic objects of silica in a wide variety of shapes which comprises impregnating a stabilized silica sol-gel monolith with a doping solution having therein a wide range of inorganic or organic dopants to achieve unique physical properties, such as specific optical absorption bands or scintillation properties.
Claims21
A method of fabricating monolithic silica objects having dopants therein, comprising the steps of:
- (a) preparing at least one doping solution comprising a solvent having dissolved therein one or more inorganic or organic dopants;
- (b) preparing an ultraporous, dried silica-gel matrix;
- (c) stabilizing said dried silica-gel matrix by subjecting said dried silica-gel matrix to a heat treatment to produce an ultraporous, stabilized silica-gel monolith;
- (d) contacting said ultraporous, stabilized silica-gel monolith with at least one of said doping solutions to produce a doped silica-gel monolith;
- (e) drying said doped silica-gel monolith.
2 more elements
Dependencies are inferred from the claim text.