Ge Tianpei, Wei Zhaobo, Zheng Xiaoli, Xu Qun
Department of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450052, P.R. China.
Henan Institute of Advanced Technology, Zhengzhou University, Zhengzhou 450001, P.R. China.
J Phys Chem Lett. 2021 Feb 11;12(5):1554-1559. doi: 10.1021/acs.jpclett.1c00012. Epub 2021 Feb 3.
Supercritical CO has shown great potential in the top-down fabrication of two-dimensional (2D) amorphous nanomaterials. However, a few works focus on the SC CO-assisted synthesis of 2D amorphous nanomaterials by a bottom-up approach. Here we report the facile bottom-up synthesis of 2D amorphous MoO nanosheets, using SC CO as a surface confining agent. Moreover, the morphology of the MoO can be tailored by simply adjusting the pressure of the SC CO. The as-prepared 2D amorphous MoO 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.
超临界二氧化碳在自上而下制备二维（2D）非晶态纳米材料方面已显示出巨大潜力。然而，很少有研究关注通过自下而上的方法利用超临界二氧化碳辅助合成二维非晶态纳米材料。在此，我们报告了以超临界二氧化碳作为表面限制剂，简便地自下而上合成二维非晶态MoO纳米片。此外，通过简单调节超临界二氧化碳的压力就可以调整MoO的形貌。所制备的二维非晶态MoO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，展现出优异的光热转换性能。这项工作构建了一种制备二维非晶态纳米片的新方法，为二维材料的非晶化机制提供了线索。
