| abstract |
Perforated graphene or perforated graphene-based sheets can be used in forming molecular sieves. The molecular sieves can include a layer of perforated graphene or perforated graphene-based material on a polymer backing. The perforated graphene or graphene-based material and polymer backing can be spiral-wound, for example on a mandrel, to form macrotubes. Methods for producing graphene-based molecular sieves can include growing graphene or graphene-based material on a growth substrate, applying a polymer to the graphene or graphene-based material, removing the growth substrate from the graphene or graphene-based material, perforating the graphene or graphene-based material while it is on the polymer, and winding the perforated graphene or graphene-based material and the polymer into a spiral shape to form a macrotube. |