On Thursday, December 15, Prof. Dr. André Beyer from Universität Bielefeld will give a lecture on „Physics and Applications of Carbon Nanomembranes“ in lecture hall A1 of Paderborn University starting at 4:15 pm. The lecture will be held in English. All interested parties are invited. Hot drinks and pastries will be available for the audience in front of the lecture hall from 3.45 pm.
„Physics and Applications of Carbon Nanomembranes“
The collective “single-file” motion of water molecules through natural and artificial nanoconduits inspires the development of high-performance membranes for water separation. In my talk, I will discuss the advantages of such transport mechanism in comparison to conventional polymer separation membranes, which are governed by the solution-diffusion mechanism. A seemingly ideal material with artificial nanoconduits are carbon nanomembranes (CNMs) which combine an extremely high areal density of nanoconduits with a remarkable ion rejection. I will sketch the development of CNMs which are made by cross-linking self-assembled monolayers via exposure with low-energy electrons. Characterization of 1.2 nm thick CNMs reveals an extremely high water permeance of about 700 LMH/bar (≈ 10-4 mol m-2 s-1 Pa-1) as well as a remarkable high ion resistance that is comparable to values of pure planar lipid bilayers. Forward osmosis experiments with ions demonstrate a remarkable performance of these ultrathin membranes.
