CO2-Assisted Synthesis of 2D Amorphous MoO3–x Nanosheets: From Top-Down to Bottom-Up,The Journal of Physical Chemistry Letters

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CO2-Assisted Synthesis of 2D Amorphous MoO3–x Nanosheets: From Top-Down to Bottom-Up
The Journal of Physical Chemistry Letters ( IF 4.8 ) Pub Date : 2021-02-03 , DOI: 10.1021/acs.jpclett.1c00012
Tianpei Ge ₁ , Zhaobo Wei ₁ , Xiaoli Zheng ₁ , Qun Xu _{1,

2}

Affiliation

Supercritical CO₂ has shown great potential in the top-down fabrication of two-dimensional (2D) amorphous nanomaterials. However, a few works focus on the SC CO₂-assisted synthesis of 2D amorphous nanomaterials by a bottom-up approach. Here we report the facile bottom-up synthesis of 2D amorphous MoO_3–x nanosheets, using SC CO₂ as a surface confining agent. Moreover, the morphology of the MoO_3–x can be tailored by simply adjusting the pressure of the SC CO₂. The as-prepared 2D amorphous MoO_3–x nanosheets exhibit enhanced surface plasma resonance in the visible and near-infrared regions, showing outstanding photothermal conversion performance. This work constructs a new approach for the preparation of 2D amorphous nanosheets, throwing light on the amorphization mechanism of 2D materials.

中文翻译：

CO ₂辅助合成2D非晶MoO _{3– x}纳米片：从上到下到自下而上

超临界CO ₂在二维（2D）非晶纳米材料的自顶向下制造中显示出巨大潜力。然而，一些工作着重于通过自下而上的方法在SC CO ₂辅助下合成2D非晶纳米材料。在这里，我们报道了使用SC CO ₂作为表面限制剂，可以轻松地进行自底向上的2D非晶MoO _{3– x}纳米片的合成。此外，可以通过简单地调节SC CO ₂的压力来定制MoO _3-_x的形态。准备好的2D非晶MoO _3–_x纳米片在可见光和近红外区域表现出增强的表面等离子体共振，显示出出色的光热转换性能。这项工作构建了一种制备2D非晶纳米片的新方法，为2D材料的非晶化机理提供了线索。

更新日期：2021-02-11

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