A method for preparing and regenerating a chemically activated or polyamino acid functionalized membrane includes the steps of permeating the silica-based membrane with a solution of silane and a solvent so as to react methoxy groups of the silane with silanol groups of the membrane to incorporate epoxide...http://www.google.com.au/patents/US6544418?utm_source=gb-gplus-sharePatent US6544418 - Preparing and regenerating a composite polymer and silica-based membrane
