Although significant advances have been made in the synthesis of various two‐dimensional (2D) nanomaterials, problems of inefficient and difficult to scale applications remain. Here, a novel strategy is reported for obtaining 2D nanosheets from the 2D interlayer space of a graphene oxide (GO) membrane through combustion, which provides a simple and rapid method for the fabrication of 2D nanosheets as well as hollow nanospheres. Layered hydrotalcite from metal nitrates is formed between GO interlayers, which can be pyrolyzed into small‐sized oxide nanoparticles (3–5 nm) and then aggregated as intermediates into large‐sized nanosheets by combustion with Co, Ni, and Cr nitrates. However, the oxide intermediates self‐assemble into hollow oxide nanospheres for nitrates of more active Cd, Ce, and Eu. Moreover, the intermediates of inactive Ag, Pb, and Bi nitrates are reduced by GO into metal nanoparticles, which can fuse into Ag nanofiber network films, or Pb and Bi composite spheres because of their low melting point. This work is helpful to understand the nature of 2D space and develops a class of micro‐scale reactors between graphene layers.

中文翻译：

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石墨烯中间层之间的层状水滑石将小型纳米颗粒热解为中间体，可自我组装为金属氧化物纳米片和中空纳米球

尽管在各种二维（2D）纳米材料的合成方面已取得重大进展，但仍然存在效率低下和难以规模化应用的问题。在这里，报告了一种新颖的策略，可以通过燃烧从氧化石墨烯（GO）膜的2D层间空间中获得2D纳米片，这为制造2D纳米片以及中空纳米球提供了一种简单而快速的方法。GO中间层之间形成了由金属硝酸盐形成的层状水滑石，可将其热解成小尺寸的氧化物纳米粒子（3-5 nm），然后通过与Co，Ni和Cr硝酸盐燃烧而作为中间体聚集为大尺寸的纳米片。但是，氧化物中间体会自组装成空心氧化物纳米球，以生产更具活性的Cd，Ce和Eu的硝酸盐。此外，非活性Ag，Pb，硝酸银和硝酸铋被GO还原为金属纳米粒子，由于其低熔点，可以融合到银纳米纤维网络薄膜或Pb和Bi复合球中。这项工作有助于理解二维空间的性质，并开发出石墨烯层之间的一类微型反应器。