Sasaki Koki, Uchida Yoshiaki, Nishiyama Norikazu
Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, Toyonaka, Osaka, 560-8531, Japan.
Chempluschem. 2023 Oct;88(10):e202300255. doi: 10.1002/cplu.202300255. Epub 2023 Aug 7.
Nanostructured materials with high aspect ratios have been widely studied for their unique properties. In particular, nanosheets have safety, dispersibility, and nanosized effects, and nanosheets with exceptionally small thicknesses exhibit unique properties. For non-exfoliable materials, the bottom-up nanosheet growth using various interfaces as templates have been investigated. This review article presents the synthesis of nanosheets at the interfaces and layered structure; it explains the features of each interface type, its advantages, and its uniqueness. The interfaces work as templates for nanosheet synthesis. We can easily use the liquid-liquid and gas-liquid interfaces as the templates; however, the thickness of nanosheets usually becomes thick because it allows materials to grow in thickness. The solid-gas and solid-liquid interfaces can prevent nanosheets from growing in thickness. However, the removal of template solids is required after the synthesis. The layered structures of various materials provide two-dimensional reaction fields between the layers. These methods have high versatility, and the nanosheets synthesized by these methods are thin. Finally, this review examines the key challenges and opportunities associated with scalable nanosheet synthesis methods for industrial production.
具有高纵横比的纳米结构材料因其独特性能而受到广泛研究。特别是，纳米片具有安全性、分散性和纳米尺寸效应，而厚度极小的纳米片表现出独特的性能。对于不可剥离的材料，人们已经研究了以各种界面为模板的自下而上的纳米片生长方法。这篇综述文章介绍了在界面处合成纳米片及其层状结构；它解释了每种界面类型的特点、优点和独特之处。这些界面作为纳米片合成的模板。我们可以很容易地将液-液和气-液界面用作模板；然而，纳米片的厚度通常会变厚，因为它允许材料在厚度上生长。固-气和固-液界面可以防止纳米片在厚度上生长。然而，合成后需要去除模板固体。各种材料的层状结构在层之间提供了二维反应场。这些方法具有很高的通用性，通过这些方法合成的纳米片很薄。最后，这篇综述探讨了与用于工业生产的可扩展纳米片合成方法相关的关键挑战和机遇。
