Yamamoto Eisuke, Kurimoto Daiki, Ito Kentaro, Hayashi Kohei, Kobayashi Makoto, Osada Minoru
Department of Materials Chemistry & Institute of Materials and Systems for Sustainability (IMaSS), Nagoya University, Nagoya, 464-8601, Japan.
Precursory Research for Embryonic Science and Technology (PRESTO), Japan Science and Technology Agency (JST), Saitama, 332-0012, Japan.
Nat Commun. 2024 Aug 4;15(1):6612. doi: 10.1038/s41467-024-51040-2.
As a member of 2D family, amorphous 2D nanosheets have received increasing attention due to their unique properties that are distinct from crystalline 2D nanosheets. However, compared with the vast library of crystalline 2D nanosheets, amorphous 2D nanosheets are still infancy due to the lack of an efficient synthetic approach. Here, we present a strategy that yields a library of 10 distinct amorphous 2D metal oxides/oxyhydroxides using solid-state surfactant crystals. A key feature of this process is a stepwise reaction using solid surfactant; the solid-state surfactant crystals have metal ions arranged in the interlayer space, and hydrolysis of the metal ions leads to the formation of isolated clusters in the surfactant crystals via limited condensation reactions. Immersing the surfactant crystals in formamide promotes nanosheet formation through the self-assembly of clusters by templating the morphologies of the crystals generated from surfactants crystals. Our approach opens a flatland in amorphous 2D world.
作为二维材料家族的一员，非晶态二维纳米片因其具有与晶态二维纳米片不同的独特性质而受到越来越多的关注。然而，与大量的晶态二维纳米片库相比，由于缺乏有效的合成方法，非晶态二维纳米片仍处于起步阶段。在此，我们提出了一种策略，该策略使用固态表面活性剂晶体生成了包含10种不同非晶态二维金属氧化物/羟基氧化物的库。这一过程的一个关键特征是使用固体表面活性剂的逐步反应；固态表面活性剂晶体的层间空间中排列着金属离子，金属离子的水解通过有限的缩合反应导致在表面活性剂晶体中形成孤立的簇。将表面活性剂晶体浸入甲酰胺中，通过模板化由表面活性剂晶体生成的晶体形态，促进簇的自组装从而形成纳米片。我们的方法在非晶态二维世界中开辟了一片新天地。
