High Pressure Induced Transformations in One-Dimensional Carbon Nanomaterials
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摘要: 研究一维碳纳米材料高压结构的转变,能够加深对碳纳米材料新特性的认识,对制备一维超硬碳纳米材料具有重要意义。介绍了本研究组近年来在一维碳纳米材料方面开展的相关研究,包括富勒烯纳米管/棒、单壁碳纳米管,以及富勒烯填充碳纳米管形成的C60填充单壁碳纳米管(Peapod)结构,在高压下的结构稳定性、结构相变、压致键合变化等;揭示了纳米尺寸效应和一维限域效应对富勒烯高压结构相变的影响;揭示了碳纳米管在高压下的结构相变过程,并给出了其发生管内和管-管间聚合成键的实验依据。Abstract: High pressure studies on one-dimensional (1D) carbon nanomaterials can provide deep insight into the new properties of carbon nanomaterials, which is also important for the fabrication of 1D superhard carbon nanomaterials. Here we present our recent research progress on high pressure studies of 1D carbon nanomaterials, including the results on structure stability, structure transitions and bonding change of fullerene nanotubes/nanorods, single-walled carbon nanotubes (SWNTs) and C60 filled SWNTs (C60@SWNTs) under pressure. The effect of nanosize and 1D nanoconfinement on the transformations of fullerenes under pressure is revealed. We also show how the structures of SWNTs transform under pressure, and further present the experimental evidence for the bonding formation of inter- and intra-tubes in compressed SWNTs.
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Key words:
- carbon nanotube /
- fullerene /
- high pressure transition /
- nano-size effect
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