(185m) Two-Dimensional Nanochannel Membranes for Molecular and Ion Separations

Two-dimensional (2D) materials have attracted considerable research interests due to the advantages of ultra-thin thickness and unique physical/chemical properties. By using 2D nanosheets as the major building block, 2D nanochannel membranes (2DNCM), in which the separation occurs in the material in-plane channels or assembled channels, have seen rapid development in high-performance separation membranes. The delicate nanochannel construction and regulation are of vital importance in 2DNCM. Specifically, various porous and non-porous materials will be briefly introduced firstly. Then we will discuss the emerging bottom-up and top-down methods to obtain high-quality 2D nanosheets and the derived membranes preparation strategy. As the major part of this presentation, the nanochannel regulation will focus on three kinds of nanochannels which are based on nonporous 2D nanosheets, intrinsically porous 2D nanosheets and perforated 2D nanosheets. Then the recent application and performance of 2DNCM in gas separation, liquid separation and ion separation will be introduced. Finally, challenges and future opportunities of 2DNCM will be discussed. In this presentation, we will show the future of 2D materials in membrane applications and more broad future will be covered.