Pengzhan Sun

TL;DR: The selective ion penetration and water purification properties of freestanding graphene oxide (GO) membranes are demonstrated and it is revealed that sodium salts can be separated effectively from copper salts and organic contaminants.

TL;DR: The latest developments on understanding mass transport through graphene-based membranes, including perfect graphene lattice, nanoporous graphene and graphene oxide membranes are reviewed here in relation to their potential applications to enable researchers to better understand the mass-transport mechanism.

TL;DR: Investigation of the selective trans-membrane transport properties of alkali and alkaline earth cations through a membrane composed of stacked and overlapped G-O sheets finds the balance between cation-π interactions of the cations considered with the sp(2) clusters ofG-O membranes is responsible for the selectivity of G- O membranes toward the penetration of different ions.

TL;DR: Graphene is shown to be impermeable to helium and several other gases, except for hydrogen, which is attributed to the strong catalytic activity of ripples in the graphene sheet.

TL;DR: This work reports on a graphene-based woven fabric (GWF) prepared by interlacing two sets of graphene micron-ribbons where the ribbons pass each other essentially at right angles, which has significant flexibility and strength gains compared with CVD grown graphene films.