Graphene net filters seawater into drinking water
Researchers at US-based National Graphene Institute have developed graphene-oxide membranes that can filter out small nanoparticles, organic molecules, and large salts. Membrane's tiny capillaries block salt from flowing with water as they form 'shell' of water molecules around salt's molecules. Membrane's pore size can be controlled to sieve common salts out of seawater and make it potable.