高等学校化学学报 ›› 2005, Vol. 26 ›› Issue (7): 1222.

• 研究简报 • 上一篇    下一篇

内包碳化铁洋葱状富勒烯的合成和表征

李天保, 许并社, 韩培德, 张艳, 刘旭光   

  1. 太原理工大学材料科学与工程学院, 太原030024
  • 收稿日期:2004-12-28 出版日期:2005-07-10 发布日期:2005-07-10
  • 通讯作者: 许并社(1955年出生),男,博士,教授,博士生导师,从事纳米碳功能材料研究.E-mail:xubs@public.ty.sx.cn E-mail:xubs@public.ty.sx.cn
  • 基金资助:

    国家重大基础研究计划“九七三”项目(批准号:2004CB217808);国家自然科学基金(批准号:90306014,20271037,20471041)资助

Synthesis and Characterization of Iron-included Onion-like Fullerenes

LI Tian-Bao, XU Bing-She, HAN Pei-De, ZHANG Yan, LIU Xu-Guang   

  1. College of Materials Science and Engineering, Taiyuan Uniersity of Technology,Taiyuan 030024, China
  • Received:2004-12-28 Online:2005-07-10 Published:2005-07-10

关键词: 洋葱状富勒烯, XRD, Ramanspectra

Abstract: Iron-included Onion-like Fullerenes(OLFs) were formed by pyrolysis ferrocene and C2H2 in H2 and Ar streams through a cylindrical furnace with a temperature at 950 ℃ in their center. The resulting carbon structure morphology was influenced by different carrying gases. When proper hydrogen flow was used in the carring gas, the graphitic carbon on the surface of metal catalysts can be easily eached. This etching rate and the catalytic efficiency of metal are two competitive mechanisms in the graphitization processes, that is, when the etching rate of graphitic sheets dominates, iron-included OLFs are apparently the end product. XRD showed that the presenting metal particle is iron carbide. XRD patterns show that the presented metal particle is iron carbide. Raman scattering spectra show that the G peak of iron-included OLFs has slightly upshift from the position 1 582 cm-1(known for a pure graphite), which was interpreted as an influence of shell curvature. Hollow core OLFs can be obtained after the iron carbide particals were removed by annealing iron-included OLFs at 1 900 ℃ for 4 h.

Key words: Onion-like fullerenes, XRD, Raman spectrum

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