US Patent Number
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 groups and attaching a polyamino acid to the membrane by reacting a terminal amine group of the polyamino acid with one of the epoxide groups on the membrane. The membrane is regenerated after metal entrapment by utilizing helix-coil properties of polyamino acids.
University of Kentucky Research Foundation, Lexington, KY (US)
Bhattacharyya, Dibakar; Ritchie, Stephen M.; Bachas, Leonidas G.; Hestekin, Jamie A.; and Sikdar, Subhas K., "Preparing and Regenerating a Composite Polymer and Silica-Based Membrane" (2003). Chemical and Materials Engineering Faculty Patents. Paper 8.