Water filters of the future may be made from billions of tiny,graphene-based nanoscrolls. Each scroll, made by rolling up a single, or atom-thick layer of graphene,could be tailor-made to trap specific molecules and pollutants in its tightly wound folds. Billions of these scrolls, stacked layer by layer, or may produce a lightweight,durable, and highly selective water purification membrane.
Source: phys.org