Currently, graphene oxide (GO) has attracted widespread attention as a new membrane material owing to its unique properties, such as fast water transport, selective gas or ion separation properties, and proton conduction. While most carbon nanomaterials have been used for reinforcements to improve conventional membrane materials via mixing, GO can be easily prepared as a freestanding membrane from aqueous solution, which provides great benefit for easy membrane formation and also lots of permeation measurements. Differing from other membrane materials, GO membranes use tunable slit-like pores between layered GO sheets for molecular or ionic separations, and such pore width can be controllable by the degree of oxidation, amount of intercalated water and further functionalization. As such, GO and its functionalized derivatives have been prepared as various membrane forms, and many intriguing, selective transport properties have been found, which can be regarded as promising membrane materials for a wide variety of membrane applications such as gas separation, water purification and fuel cell membranes. This chapter will cover the state of the art of GO membranes and their promising membrane applications, and also provide material guidelines for future research directions suitable for practical membrane applications.
|Title of host publication||Graphene Oxide|
|Subtitle of host publication||Fundamentals and Applications|
|Number of pages||18|
|Publication status||Published - 2016 Jul 13|
- Gas separation
- Graphene oxide
- Water purification