Classification of carbon nanostructure families occurring in a chemically activated arc discharge reaction
Classification of carbon nanostructure families occurring in a chemically activated arc discharge reaction
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DOI：
10.1039/c5ra26325e
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发表时间：
2016-03
期刊：
影响因子：
3.9
通讯作者：
P. Dallas;Seyyed Shayan Meysami;N. Grobert;Kyriakos Porfyrakis
中科院分区：
文献类型：
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作者：
P. Dallas;Seyyed Shayan Meysami;N. Grobert;Kyriakos Porfyrakis
控制空笼、面内金属富勒烯和碳纳米管的生成是功能材料定制合成及其规模化生产的一个重要挑战。然而，富勒烯的反应产率很低，其形成机理还远未被阐明，从而阻碍了它们的定向、放大生产和潜在的应用。本文系统地研究了硝酸铜作为掺杂剂在Gd和Nd掺杂棒弧放电汽化制备系列富勒烯和碳纳米管过程中的作用。与小的空笼相比，当硝酸铜的摩尔比在6到7之间时，高分子量富勒烯和面内富勒烯的产率更高。我们区分了三类不同的纳米材料：(1)小的空笼富勒烯，(2)面内金属富勒烯和超过88个原子的空笼富勒烯，(3)沉积在阴极上的多壁碳纳米管，它们的产率似乎受到不同反应条件的影响。
Controlling the generation of empty cages, endohedral metallofullerenes and carbon nanotubes is an important challenge for the tailored synthesis of functional materials and their scaled up production. However, the reaction yields for fullerenes are low and their formation mechanism is far from being elucidated thus hampering their targeted, scaled up production and potential applications. We present a systematic study on the effect of the addition of copper nitrate as a doping agent during an arc discharge vaporization of Gd and Nd doped rods for the production of a series of fullerenes and carbon nanotubes. The incorporation of copper nitrate at a Cu/M molar ratio in the range of 6 to 7 leads to a higher yield for the high molecular weight fullerenes and endohedral fullerenes compared to small empty cages. We distinguished three different families of nanomaterials: (1) small empty cage fullerenes, (2) endohedral metallofullerenes and empty cage fullerenes with more than 88 atoms, and (3) multi-wall carbon nanotubes which were deposited on the cathode and their yield appeared to be influenced by the different reaction conditions.