ScholarWorks@경상국립대학교

초록

Two-dimensional (2D) MXene-based composite membranes have emerged as a promising category of materials for advanced gas separation due to their adjustable interlayer spacing, high aspect ratio, diverse surface chemistry, and exceptional transport selectivity. Predominantly, research has focused on flat-sheet configurations; however, for the industrial application of MXene membranes on a wide scale, it is essential to fabricate them into high-surface-area modules, such as hollow fiber and tubular structures. This paper meticulously analyzes recent developments in MXene-based composite membranes, concentrating on the engineering shift from planar films to curved membrane geometries. We begin by discussing the structure, the fabrication process, and the gas transport mechanisms within MXene membranes. Subsequently, we examine methods to maintain or enhance flat-sheet performance metrics in hollow fiber and tubular modules. An exhaustive assessment of critical elements, including the geometric adaptability of multilayer MXene assemblies, advanced fabrication techniques, axial-radial mass transport dynamics, and module-scale engineering parameters such as packing density, shell-side hydrodynamics, and mechanical reinforcement, is provided. The paper demonstrates how composite approaches utilizing polymers, carbon nanomaterials, and encapsulating layers can address the inherent issues associated with pure MXene structures. This enables the fabrication of membrane modules that are mechanically robust, densely arranged, and hydrodynamically optimized. Finally, the current challenges and prospective measures are delineated to facilitate the intelligent design of MXene membrane systems suitable for large-scale, high-efficiency gas separation applications.

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