Supercritical CO₂‐Induced Amorphization in 2D Materials: Mechanism and Applications

Abstract

Supercritical carbon dioxide (SC CO2)‐assisted chemical and material processing has shown great success in the fabrication of 2D amorphous materials, while the amorphization mechanism in SC CO2 is quite complicated to be understand. In this review, we introduce different kinds of 2D amorphous materials prepared with SC CO2 and discuss the possible amorphization mechanism and how they affect the structures and properties of 2D materials. Their applications are further presented and discussed. In addition, the prospective of future development of SC CO2‐assisted fabrication of 2D amorphous materials is also involved. The investigation of SC CO2 induced amorphization not only provides theoretic understanding of amorphization process, but also directs to the preparation and application of 2D amorphous materials with specific structure and property, suggesting the promising future of SC CO2‐assisted process in material design and engineering.

Heterogeneous CNF/MoO3 nanofluidic membranes with tunable surface plasmon resonances for solar-osmotic energy conversion

“…23,24 SC-CO 2 has shown great potential in the fabrication of 2D amorphous materials, which can exhibit both vapor-and liquid-like behaviors, including near-zero surface tension, low viscosity, high diffusion coefficients, excellent wetting of surfaces, and strong solvating power. [25][26][27] 2D amorphous MoO 3 nanosheets with tunable SPR could be obtained using SC-CO 2 . 28 Their electronic properties can be tuned to make them suitable for developing a variety of future electronic and optical devices.…”

Sunlight Driven Reversible and Tunable Plasmon Resonance in 2D Amorphous Molybdenum Oxide

“…The amorphous nanomaterials, possessing atomic short‐range order and long‐range disorder in space, exhibit distinct physicochemical properties compared with crystal materials, including optical, electronic, magnetic, or thermal properties. [ 21 ] Supercritical carbon dioxide (SC‐CO 2 ), as a green and eco‐friendly chemical technology, has emerged overwhelming preponderance and gained breakthrough achievements in the fabrication of 2D amorphous materials on account of its unique physical characteristics. [ 22 ] Although the amorphous MoO 3 nanosheets have been fabricated with the assistance of SC‐CO 2 , [ 23 ] its peculiar properties and functionality are not explored.…”