Two-dimensional (2D) graphitic carbon nitride (g-C₃N₄) membranes with lamellar structure have gained extensive attention in the past decade due to their good separation performance. Studies carried out on the filtration performance in the fields of Microfiltration, Ultrafiltration, Nanofiltration, Reverse and Forward osmosis reveal that 2D g-C₃N₄-based membranes have a high selectivity towards all kinds of contaminants present in water such as organic components as well as divalent and monovalent ions while maintaining high permeability and that by their photocatalytic properties they are able to remedy the membrane fouling thus allowing long-term use over several cycles of filtration process. Therefore, the limitations encountered by conventional polymeric membranes have thus been corrected by the use of 2D nanomaterials-based membranes such as g-C₃N₄. This review mainly focuses on summarizing recent trends in research on g-C₃N₄ nanosheets-based membrane filtration, including g-C₃N₄ nanosheets and membrane fabrication, composition and application. We also attempt to provide future directions in which the field is likely to be realized. The key challenges and issues related to the synthesis and application of g-C₃N₄-based membranes in the filtration field are highlighted.

具有层状结构的二维（2D）石墨氮化碳（gC ₃ N ₄）膜由于其良好的分离性能在过去十年中受到广泛关注。对微滤、超滤、纳滤、反渗透和正渗透领域的过滤性能进行的研究表明，2D g -C ₃ N ₄基膜对水中存在的各种污染物（如有机成分以及二价和一价离子）具有高选择性，同时保持高渗透性，并且通过其光催化性能，它们能够修复膜污染，从而允许长期使用经过几个循环的过滤过程。因此，通过使用基于 2D 纳米材料的膜（例如g -C ₃ N _{4 ）}，传统聚合物膜遇到的限制已得到纠正。本综述主要集中于总结基于g -C ₃ N ₄纳米片的膜过滤研究的最新趋势，包括g -C ₃N ₄纳米片和膜的制造、组成和应用。我们还试图提供该领域可能实现的未来方向。强调了与g -C ₃ N ₄基膜在过滤领域的合成和应用相关的关键挑战和问题。