Supercritical CO2 Directional-Assisted Synthesis of Low-Dimensional Materials for Functional Applications

被引:26
作者
Liu, Wei [1 ]
Zheng, Xiaoli [2 ]
Xu, Qun [1 ,2 ]
机构
[1] Zhengzhou Univ, Henan Inst Adv Technol, Zhengzhou 450052, Peoples R China
[2] Zhengzhou Univ, Coll Mat Sci & Engn, Zhengzhou 450001, Peoples R China
基金
中国国家自然科学基金;
关键词
2D heterostructures; 2D materials; carbon nanotubes; density inhomogeneities; supercritical CO2; COVALENT ORGANIC FRAMEWORKS; PRESSURE-INDUCED AMORPHIZATION; LOCAL-DENSITY INHOMOGENEITIES; POLYETHYLENE SINGLE-CRYSTALS; WALLED CARBON NANOTUBES; PHASE-TRANSFORMATION; GRAPHENE NANOSHEETS; CO2-ASSISTED FABRICATION; PHOTOCHEMICAL ROUTE; PE EPITAXY;
D O I
10.1002/smll.202301097
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Supercritical CO2 (SC CO2), as one of the unique fluids that possess fascinating properties of gas and liquid, holds great promise in chemical reactions and fabrication of materials. Building special nanostructures via SC CO2 for functional applications has been the focus of intense research for the past two decades, with facile regulated reaction conditions and a particular reaction field to operate compared to the more widely used solvent systems. In this review, the significance of SC CO2 on fabricating various functional materials including modification of 1D carbon nanotubes, 2D materials, and 2D heterostructures is stated. The fundamental aspects involving building special nanostructures via SC CO2 are explored: how their structure, morphology, and chemical composition be affected by the SC CO2. Various optimization strategies are outlined to improve their performances, and recent advances are combined to present a coherent understanding of the mechanism of SC CO2 acting on these functional nanostructures. The wide applications of these special nanostructures in catalysis, biosensing, optoelectronics, microelectronics, and energy transformation are discussed. Moreover, the current status of SC CO2 research, the existing scientific issues, and application challenges, as well as the possible future directions to advance this fertile field are proposed in this review.
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页数:36
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