| 초록 |
Membrane separation is considered as a promising process for water treatment, resolving a water shortage issue. In particular, graphene oxide (GO) based membrane with an excellent mechanical stability and chemical versatility possesses distinctive nanochannels which can be utilized for sieving unwanted molecules. However, ions such as Na+ are too small to restrain the permeation through GO membranes, so that a number of studies has been conducted to block small ions via manipulating the size of nanochannels. In this study, we prepared GO membranes intercalated by crown ethers between GO layers, newly fabricating sub-nanochannels into GO nanochannels. Our results show that the GO composite membranes improve the salt rejection rate, while simultaneously achieving a proper water permeance. |
