CO2-Assisted Synthesis of 2D Amorphous MoO3- x Nanosheets: From Top-Down to Bottom-Up

Tianpei Ge; Zhaobo Wei; Xiaoli Zheng; Qun Xu

doi:10.1021/acs.jpclett.1c00012

CO₂-Assisted Synthesis of 2D Amorphous MoO_{3- x} Nanosheets: From Top-Down to Bottom-Up

J Phys Chem Lett. 2021 Feb 11;12(5):1554-1559. doi: 10.1021/acs.jpclett.1c00012. Epub 2021 Feb 3.

Authors

Tianpei Ge¹, Zhaobo Wei¹, Xiaoli Zheng¹, Qun Xu^{1

2}

Affiliations

¹ Department of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450052, P.R. China.
² Henan Institute of Advanced Technology, Zhengzhou University, Zhengzhou 450001, P.R. China.

PMID: 33534582
DOI: 10.1021/acs.jpclett.1c00012

Abstract

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.