writer：Jing-Gang Gai*, Xiao-Lei Gong, Wei-Wei Wang, Xin Zhang，Wu-Li Kang
keywords：Ultrafast Water Transport，Forward Osmosis，Membrane，Porous Graphene
source：期刊
specific source：J. Mater. Chem. A, 2014, 2(11), 4023-4028
Issue time：2014年

As an emerging

technology, forward osmosis (FO) has shown great promise in energy production

from the mixing of fresh water and seawater in estuaries. However, the power

density levels of the present commercial FO membranes hinder their practical

applications in power generation due to the requirement for extremely large

areas of membrane. Here, we use functionalized porous-single-layer graphene as

a FO membrane and study the transport performances of the membrane using

molecular dynamics simulation. For the FO system using fluorinated porous graphene (pore-diameter 11.7 ?, porosity

10%), with an excellent performance for salt rejection, the water flux is 28.1 L cm_2 h which is about 1.8 ×10⁴ times higher than

that of a typical cellulose triacetate membrane. Such high water flux will

certainly bring about a very high power density in pressure retarded osmosis

power generation. This work may generate potential opportunities for

functionalized graphene in FO power generation, seawater desalination and so

forth.