| 초록 |
Advances made in membrane technology have to do with either enhancing separation efficiency or improving the permeation flux. Enhancing the separation efficiency, however, inevitably led to reducing the flux, and improving the permeation flux resulted in a loss in the separation efficiency. In this presentation, we suggest multiscale porous membranes that allow for high permeation flux without sacrificing separation efficiency. In order to create the multiscale architectured membranes, primary structure of inverse opal having macropores is first prepared. Then, secondary nanostructures are incorporated to elaborately tune the pore size, tortuosity, and interfacial properties. Embedded nanostructures can be made from polyelectrolyte multilayers, block copolymers, or self-assembly of another colloidal particles. Finally, the constructed multiscale architectures are utilized for water-treatment applications, such as ultrafiltration of nanoparticles or nanofiltration of metallic ions. |
