Patent ID: 9388477
Filing Date: 2016-07-12
CPC Classification: B01J,B22F,C22C

Claim Text:
1. A method, comprising: heating an aqueous solution of colloidal silver particles; adding a soluble noble metal halide salt to the aqueous solution, the noble metal halide salt undergoing a redox reaction on a surface of the colloidal silver particles to form at least one of noble metal/silver halide superparticles, noble metal halide/silver halide superparticles and noble metal oxide/silver halide superparticles on the surface of the silver particles; maintaining the heat for a predetermined time to consume the silver particles and release the at least one of the noble metal/silver halide superparticles, the noble metal halide/silver halide superparticles and noble metal oxide/silver halide superparticles into the aqueous solution; cooling the aqueous solution; and separating the at least one of the noble metal/silver halide superparticles, the noble metal halide/silver halide superparticles and noble metal oxide/silver halide superparticles from the aqueous solution.