Owing to atomically thin structure and high-activity surface, two-dimensional (2D) non-layered materials exhibit many intriguing properties, rendering them a bright application prospect in high-performance and functional devices. Recently, great progress have been achieved in the synthesis and applications of 2D non-layered materials. Therefore, in this review, the recent advances of 2D non-layered materials have been summarized, including the categories and crystal structures, the synthetic methods with the growth mechanism, advantages and limitations, as well as the potential applications in the fields of electronics, optoelectronics, catalysis, and energy storage. Finally, our perspectives on the challenges and future research focus are provided. In general, the emergence and development of 2D non-layered materials are an important complement to the research on 2D materials. The research on 2D non-layered materials will deepen our fundamental understanding of phenomena in two dimensions and promote optoelectronics, catalysis, and other applications with new direction.

由于原子薄的结构和高活性的表面，二维（2D）非层状材料具有许多吸引人的特性，使其在高性能和功能性设备中具有广阔的应用前景。最近，在2D非分层材料的合成和应用方面已经取得了很大的进步。因此，在这篇综述中，我们总结了二维非分层材料的最新进展，包括类别和晶体结构，具有生长机理的合成方法，优点和局限性以及在电子领域的潜在应用，光电，催化和能量存储。最后，提供了我们对挑战的观点和未来的研究重点。一般来说，二维非分层材料的出现和发展是对二维材料研究的重要补充。2D非分层材料的研究将加深我们对二维现象的基本理解，并以新的方向推动光电子，催化和其他应用的发展。