Graphite phase carbon nitride (g-C₃N₄) composite structure materials, as a kind of stable compound with graphite-like structure, has attracted more and more attention due to its excellent properties, such as being able to absorb solar energy, stable chemical and optical properties and having a suitable oxidation potential. However, its application in the field of photocatalysis is limited by its small specific surface area and poor dispersibility. To solve this problem, ultra-thin g-C₃N₄ nanosheets are often prepared using peeling methods. In this paper, the current status and mechanism of thermal oxidation peeling, ultrasound-assisted liquid-phase peeling and acid-base chemical peeling are reviewed in detail. In addition, the future research directions of ultra-thin graphite-like carbon nitride nanosheets are discussed

石墨相氮化碳（gC ₃ N ₄）复合结构材料作为一种具有石墨状结构的稳定化合物，由于其具有良好的吸收太阳能，稳定化学物质和化学稳定性等优异性能而受到越来越多的关注。光学性质，并具有合适的氧化电位。然而，其在光催化领域的应用受到其比表面积小和分散性差的限制。为了解决这个问题，超薄gC ₃ N ₄纳米片通常使用剥离方法制备。本文详细综述了热氧化脱皮，超声辅助液相脱皮和酸碱化学脱皮的现状和机理。此外，讨论了超薄类石墨氮化碳纳米片的未来研究方向。