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US 12,097,471 B2Granted
Nanoparticles for use in membranes
AssigneeEvoqua Water Technologies LLC
InventorGregory R Collins
Life of this patent
Estimating the term…
Abstract
The present invention is directed to asymmetric membranes and methods for making such membranes, wherein the membranes have a void volume and nanoparticles located in the void volume. The membranes have a variety of applications, including blood purification, water purification, water decontamination and bioprocessing.
Claims10
A method of preparing a membrane containing nanoparticles comprising the steps of:
- providing an asymmetric membrane comprising a membrane skin layer with a predetermined pore size at a first outer surface of the membrane, an internal porous support structure of the membrane having an internal void volume, and a second outer porous surface of the membrane in fluid communication with the internal void volume of the membrane;
- filling said void volume with a nanoparticle solution through said second porous surface of the membrane wherein the nanoparticles penetrate through the second outer surface into the void volume of said membrane without passing through the pores of said membrane skin layer.
A method of preparing a membrane containing nanoparticles comprising the steps of:
- providing an asymmetric membrane comprising membrane skin layer with a predetermined pore size at a first outer surface of the membrane, an internal porous support structure of the membrane having a void volume, and a second outer porous surface of the membrane in fluid communication with the void volume of the membrane;
- filling said void volume with a nanoparticle solution through said second outer porous surface of the membrane wherein the nanoparticles penetrate through the second outer surface into the void volume of said membrane without passing through the pores of said membrane skin layer;
- and
- constructing a porous sealing layer at said second outer membrane surface, said sealing layer containing the nanoparticles within the void volume of the membrane.
1 more element
Dependencies are inferred from the claim text.