Separation and recovery of precious metals using polymer materials.
A method of separation and/or recovery of a precious metal from a solution containing said precious metal in ionic form, optionally in the presence of impurities, including the step of contacting a solution containing said precious metal in ionic form with a conducting polymer. The method is generally applicable to precious metals including platinum (Pt), palladium (Pd) and more particularly gold (Au). The ionic species may be anionic (for example [AuC14]<->) or cationic. The polymer may be for example, a polypyrrole or polythiophene, optionally doped and are preferably in a high surface area form eg. coated onto cloth or RVC or in self supporting colloidal form. The polymer may also contain species to give further functionality, eg magnetic or heat sensitive species.
WALLACE GORDON; RALPH STEPHEN; DING JIE; PRICE WILL
Type of Offer:
« More Material Science Patents