Sub-1 nm MoS2 and WS2 with extremely enhanced performance
NANO TODAY(2024)
Abstract
Great efforts have been taken towards in-plane structural extension of two-dimensional materials. Compared with surface lattices, edge lattices represent non-equilibrium states and remain largely unexplored. Herein, we report the all-physical top-down production of sub-1 nm molybdenum disulfide (MoS2) and tungsten disulfide (WS2) with 100% broken lattice. Bulk MoS2 and WS2 are tailored into subnanometer species with satisfactory yields (7.2 and 4.8 wt%) by sequential combination of dual and triple synergy silica-assisted ball-milling. Such two-stage ball-milling push the top-down limit into single-lattice scale, which is far beyond the manufacturing capacity of any known top-down method. Exceptional solvent diversity and solvability of the sub-1 nm MoS2 and WS2 powder endow solution-processability towards hybrid thin film fabrication. The sub-1 nm intrinsic MoS2 and WS2 demonstrate comprehensively superior performances over those of their bulk, nanosheets, and quantum sheets. Both photoluminescence and nonlinear saturation absorption of sub-1 nm MoS2 and WS2 are extremely enhanced. The non-equilibrium states induced by the entirely exposed and broken, intrinsic lattices in sub-1 nm MoS2 and WS2 could be determinative to their extreme performances. Our work highlights the potential of broken lattice and opens up an avenue towards subnanometer materials.
MoreTranslated text
Key words
Sub-1 nm,TMDs,Broken lattice,Photoluminescence,Nonlinear saturation absorption
AI Read Science
Must-Reading Tree
Example
![](https://originalfileserver.aminer.cn/sys/aminer/pubs/mrt_preview.jpeg)
Generate MRT to find the research sequence of this paper
Chat Paper
Summary is being generated by the instructions you defined