Two-dimensional (2D) materials have drawn much attention in recent years ascribing to their unique properties associated with atomic thickness. Besides graphene, which has aroused tremendous research interest, other 2D materials such as [Bi₂O₂]-based layered compounds, i.e., Bi₂O₂Se, BiOCl, and Bi₂Sr₂CaCu₂O_x, have also been studied widely and show promising application prospects in electronics, optoelectronics, photocatalysis fields, and so on. In this Perspective, we systematically review the progress on preparation methods of 2D [Bi₂O₂]-based layered materials, discuss the strengths and drawbacks of different methods, and give an outlook toward future research directions.

中文翻译：

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二维[Bi2O2]基层状材料的制备：进展与展望

近年来，二维 (2D) 材料因其与原子厚度相关的独特性质而备受关注。除了引起巨大研究兴趣的石墨烯外，其他二维材料如[Bi ₂ O ₂ ] 基层状化合物，即Bi ₂ O ₂ Se、BiOCl 和Bi ₂ Sr ₂ CaCu ₂ O _x也得到了研究。在电子、光电子、光催化等领域显示出广阔的应用前景。在这个视角下，我们系统地回顾了二维 [Bi ₂ O ₂] 为基础的分层材料，讨论不同方法的优缺点，并展望未来的研究方向。