Description:

Nanotube membranes can be prepared by depositing carbon into porous alumina templates. These are synthetic membranes that contain a parallel collection of nanotubes with inside diameters that can be of molecular dimension (< 1 nm). Researchers are exploring applications of these nanotube membranes in chemical analysis and in membrane-based chemical separations. For example, it has been shown that these membranes can be used as filters to cleanly separate small molecules on the basis of molecular size, in other words they are "molecule sorters." These nanotube membranes can also be used for protein separations. Furthermore, it has been shown that these nanotube membranes can form the basis of a new method of electrochemical analysis that has detection limits as low as 10^-11 M.

 

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