波谱学杂志 ›› 2004, Vol. 21 ›› Issue (4): 427-434.

• 研究论文 • 上一篇    下一篇

爆炸法合成纳米碳集聚体和纳米金刚石的EPR研究

王志成1, 江晓红1,石晓琴1,杨绪杰1,Struk V.A.2,陆路德1*   

  1. 1.南京理工大学 材料化学教研室,江苏 南京 210094; 
    2.白俄罗斯格罗德拉国立大学 材料与资源保护研究所,格罗德拉 230023
  • 收稿日期:2004-03-09 修回日期:2004-04-29 出版日期:2004-12-05 发布日期:2004-12-05
  • 基金资助:

    高等学校博士学科点专项科研基金(20030288020); 江苏省自然科学基金(BK2003096); 中国博士后科学基金(2003033493)资助项目.

AN EPR STUDY OF NANO-CONDENSED CARBON AND NANO-DIAMOND SYNTHESIZED BY EXPLOSIVE DETONATION

 WANG Zhi-Cheng1, JIANG Xiao-Hong1, SHI Xiao-Qin1, YANG Xu-Jie1, Struk V.A.2, LIU Lu-De1*   

  1. 1.Materials Chemistry Laboratory, Nanjing University of Science & Technology,Nanjing 210094,China;
    2.Research Institute of Materials and Resource Saving Technologies, Grodno State University, Grodno 230023, Belarus
  • Received:2004-03-09 Revised:2004-04-29 Online:2004-12-05 Published:2004-12-05
  • Supported by:

    高等学校博士学科点专项科研基金(20030288020); 江苏省自然科学基金(BK2003096); 中国博士后科学基金(2003033493)资助项目.

摘要:

爆炸法合成的纳米碳集聚体和纳米金刚石具有大量的结构缺陷和表面官能团. 电子顺磁共振(EPR)研究表明,它们均含有大量的自由基,而且纳米碳集聚体和纳米金刚石的EPR谱的形状、峰面积、g因子以及线宽ΔHpp等都存在着较大的差异. 此外,还探讨了制备方法、化学处理条件、粒径大小、表面改性及掺杂对纳米碳集聚体和纳米金刚石的自由基密度的影响.

关键词: 电子顺磁共振, 爆炸法, 纳米碳集聚体, 纳米金刚石, 自由基

Abstract:

A large number of structure defects and surface functional groups were found to exist in nanocondensed carbon (NCC) and nanodiamond (ND) synthesized by explosive detonation. Results from electron paramagnetic resonance (EPR) showed that there were a lot of free radicals in both NCC and ND. It was also shown that there are great differences in the EPR characteristics between NCC and ND, including the figure, the peak area of the EPR curve, the g- factor, the peak-to-peak line-width ΔHpp, and so on. In addition, the influences of various factors, such as preparation method, condition of chemical treatment, size of the particles, surface modification and impurity admixture, on the density of free radicals were also discussed.

Key words: EPR, explosive detonation, nano-condensed carbon, nano-diamond, free radical

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