| 초록 |
Membranes are widely used for gas and liquid separations. Historical analysis of a range of gas pair separations indicated that there was an upper bound on the trade-off between membrane permeability, which limits flow rates, and the selectivity, which limits the quality of the separation process. The advances have been made in attempts to break past this upper bound. Some inspiration has come from new types of membranes such as two-dimensional materials-based membranes. These days, two-dimensional materials such as graphene and its derivatives have emerged as new family of membrane materials for gas separation as well as liquid separation. Particularly significant academic achievements have been progressed on the development of next-generation membranes using graphene membranes, such as gas separation, water purification, and proton conductors. Among other nanomaterials with different dimensions (e.g., 0D and 1D), 2D nanomaterials have significantly contributed to the enhancement of conventional polymeric membranes in the form of mixed matrix membranes, and also 2D nanomaterials having precise pore size and pore size distribution are highly sought for unique, selective mass transport through the membranes. The latest developments on understanding mass transport through 2D materials-based membranes, including nanoporous graphene and graphene oxide membranes will be reviewed in relation to their potential membrane applications, particularly focusing on their reality for practical applications. |
