二茂铁质量对气相爆轰法合成碳纳米管的影响

杨瑞 李晓杰 闫鸿浩 孔令杰

杨瑞, 李晓杰, 闫鸿浩, 孔令杰. 二茂铁质量对气相爆轰法合成碳纳米管的影响[J]. 高压物理学报, 2017, 31(4): 389-395. doi: 10.11858/gywlxb.2017.04.006
引用本文: 杨瑞, 李晓杰, 闫鸿浩, 孔令杰. 二茂铁质量对气相爆轰法合成碳纳米管的影响[J]. 高压物理学报, 2017, 31(4): 389-395. doi: 10.11858/gywlxb.2017.04.006
YANG Rui, LI Xiao-Jie, YAN Hong-Hao, KONG Ling-Jie. Effect of Ferrocene Precursor Mass on Gaseous Detonation Synthesisof Carbon Nanotubes[J]. Chinese Journal of High Pressure Physics, 2017, 31(4): 389-395. doi: 10.11858/gywlxb.2017.04.006
Citation: YANG Rui, LI Xiao-Jie, YAN Hong-Hao, KONG Ling-Jie. Effect of Ferrocene Precursor Mass on Gaseous Detonation Synthesisof Carbon Nanotubes[J]. Chinese Journal of High Pressure Physics, 2017, 31(4): 389-395. doi: 10.11858/gywlxb.2017.04.006

二茂铁质量对气相爆轰法合成碳纳米管的影响

doi: 10.11858/gywlxb.2017.04.006
详细信息
    作者简介:

    杨瑞(1991—), 男,硕士,主要从事爆炸合成材料研究.E-mail:yangrui123@gmail.dlut.edu.cn

    通讯作者:

    闫鸿浩(1974—), 男,博士,副研究员,主要从事爆炸加工以及冲击动力学等研究.E-mail:honghaoyan@vip.sina.com

  • 中图分类号: O389

Effect of Ferrocene Precursor Mass on Gaseous Detonation Synthesisof Carbon Nanotubes

  • 摘要: 以甲烷和氧气作为爆源,二茂铁为前驱体,探究了不同前驱体质量对所合成的碳纳米管的影响。利用X射线衍射(XRD)、透射电子显微镜(TEM)、高分辨透射电子显微镜(HR-TEM)等手段对碳纳米管的形貌和结构进行表征,结果发现:当二茂铁量较少时,只有碳包覆铁纳米颗粒存在;随着二茂铁质量的增加,逐渐有碳纳米管生成,其管径大多分布在10~50 nm之间,为多壁碳纳米短管。随着前驱体质量的增加, 碳纳米管的石墨化程度提高,结构缺陷也变少。通过对合成产物的热重分析可得,气相爆轰法所制备的碳纳米管具有强烈吸氧性,所得样品中碳纳米管的质量分数为26%左右。

     

  • 图  气相爆轰管示意图

    Figure  1.  Schematic of gaseous detonation tube

    图  不同前驱体质量合成产物的XRD图谱

    Figure  2.  XRD patterns of detonation products with different precursor masses

    图  不同二茂铁质量下产物的TEM图片

    Figure  3.  TEM images of detonation products with different ferrocene masses

    图  不同二茂铁质量下产物的HR-TEM图片

    Figure  4.  HR-TEM images of detonation products with different ferrocene masses

    图  3#样品在不同气体氛围下的热重曲线

    Figure  5.  TG curves of sample 3# at different gas atmospheres

    表  1  合成条件及配比

    Table  1.   Synthesis conditions and proportions

    Sample Temperature/(℃) Initial pressure/(MPa) Ferrocene mass/(g) n(CH4):n(O2)
    1# 110 0.1 0.50 1:1
    2# 110 0.1 0.75 1:1
    3# 110 0.1 1.00 1:1
    4# 110 0.1 1.50 1:1
    5# 110 0.1 2.00 1:1
      Note:n(CH4):n(O2) is the mole ratio of CH4 to O2.
    下载: 导出CSV

    表  2  前驱体中各元素的摩尔构成以及氧平衡

    Table  2.   Moles of each element in the precursor composition and the oxygen balance

    Sample Mole of each element n(H):n(O) Oxygen balance
    H O C Fe
    1# 0.467 0.220 0.137 0.002 7 2.1:1.0 <0
    2# 0.480 0.220 0.150 0.004 0 2.2:1.0 <0
    3# 0.494 0.220 0.164 0.005 4 2.3:1.0 <0
    4# 0.521 0.220 0.191 0.008 1 2.4:1.0 <0
    5# 0.550 0.220 0.220 0.011 0 2.5:1.0 <0
      Note:n(H):n(O) is the mole ratio of H to O.
    下载: 导出CSV
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  • 收稿日期:  2016-09-05
  • 修回日期:  2016-10-31

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