Ultrathin 2D nanomaterials possess promising properties due to electron confinement within single or a few atom layers. As an emerging class of functional materials, ultrathin 2D rare-earth nanomaterials may incorporate the unique optical, magnetic, and catalytic behaviors of rare-earth elements into layers, exhibiting great potential in various applications such as optoelectronics, magnetic devices, transistors, high-efficiency catalysts, etc. Despite its importance, reviews on ultrathin 2D rare-earth nanomaterials or related topics are rare and only focus on a certain family of ultrathin 2D rare-earth nanomaterials. This work is the first comprehensive review in this impressive field, which covers all families of ultrathin 2D rare-earth nanomaterials, illustrating their compositions, syntheses, and applications. After summarizing the current achievements, the challenges and opportunities of future research on ultrathin 2D rare-earth nanomaterials are evaluated.

中文翻译：

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超薄二维稀土纳米材料：成分，合成和应用。

由于电子被限制在单个或几个原子层内，超薄2D纳米材料具有有前途的性能。作为一种新兴的功能材料，超薄二维稀土纳米材料可以将稀土元素的独特光学，磁学和催化行为整合到层中，在光电子，磁性器件，晶体管，高强度电子等各种应用中显示出巨大的潜力。尽管它很重要，但对超薄2D稀土纳米材料或相关主题的评论很少，并且仅关注某些超薄2D稀土纳米材料家族。这项工作是这一令人印象深刻的领域的首次全面综述，涵盖了超薄2D稀土纳米材料的所有系列，说明了它们的组成，合成和应用。