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化学学报
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化学学报 ›› 2002, Vol. 60 ›› Issue (8): 1411-1414. 上一篇    下一篇

研究论文

CO_2激光辐照石墨产生的碳纳米结构

王震遐;余礼平;马余刚;朱志远;何国伟;胡岗;陈一;王绍民;黄富泉;胡来归   

  1. 中国科学院上海原子核研究所.上海(201800);复旦大学材料系. 上海(200433);浙江大学物理系,杭州(310028)
  • 发布日期:2002-08-15

Production of Carbon Nanostructures by CO_2-Laser Irradiating Graphite

Wang Zhenxia;Yu Liping;Ma Yugang;Zhu Zhiyuan;He Guowei;Hu Gang;Chen Yi;Wang Shaoming;Huang Fuquan;Hu Laigui   

  1. Shanghai Institute of Nuclear Research, Chinese Academy of Sciences. Shanghai(201800);Department of Material, Fudan University.Shanghai (200433);Department of Physics, Zhejiang University,Hangzhou(310028)
  • Published:2002-08-15

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被引次数

1

用高分辨透射电子显微镜（HRTEM）检查连续波CO_2激光束（波长10.6 μm， 功率300 W）辐照石墨后发现，不但有通常所见的碳纳米多面体（polyhedrons)， 纳米洋葱（onions)和纳米管，而且也罕见的腔内充填大小不等空心洋葱（hollow onions, HOs）的碳纳米袋（nano-bags)。同时，在纳米袋中一些结构相似的碳 HO聚生成为HO团簇。根据这些团簇的排布情况，我们认为这种聚生物有可能是HO结 晶晶格生长的前体（precursor)。

关键词: 碳, 纳米相材料, 激光辐照, 透射电子显微镜, 簇状化合物

A continuous-wave (CW) CO_2-laser with wave length of 10.6 μm has been employed to irradiate graphite targets in air and various carbon nanostructures have been revealed by a high-resolution transmission electron microscope (HRTEM). It was found that not only carbon polyhedrons, onions and nanotubes but also unusual nano-bags filled with hollow-onions of variable diameters were produced, and that some of the similar hollow-onions agglomerated into clusters in which the hollow-onions appear to grow spontaneously. It is proposed that these agglomerated products may be a precursor for hollow-onion crystal lattice growth.

Key words: CARBON, NANOPHASE MATERIALS, LASER RADIATION, TEM, CLUSTER COMPOUND

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