| 二组元酞菁固相混合法裂解合成直立碳纳米管(英文) |
| A Solid-state Hybrid Method to Synthesize Straight Carbon Nanotubes by Pyrolysis of Two Mixed Metal Phthalocyanines |
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| 摘要: 通过向两种金属酞菁的混合物添加一定量的硫粉，在800～950 ℃裂解合成了大面积的直立碳纳米管。采用场发射扫描电镜(FE-SEM)、高分辨透射电镜(HRTEM)和拉曼光谱对产物进行了观察和表征，结果显示：所合成的碳纳米管(直径为15～35 nm，长度为200～800 nm)管身平直，具有很好的石墨化程度，且杂质很少。采用两种金属酞菁((M(Ⅱ)Pc, M=Fe, Co))进行混合裂解时，既可以提供碳源，而且可以产生相当均匀的催化剂颗粒，有利直立碳纳米管的沉积。这种将两种酞菁进行固相混合裂解的方法，相当安全高效，有利于大规模生产直立碳纳米管。 |
| 关键词: 直立碳纳米管 酞菁 热化学气相沉积 硫 |
| 基金项目: |
| Abstract: Straight carbon nanotubes(CNTs) were synthesized in large scale through thermal chemical vapor deposition(TCVD) by pyrolysis of two mixed metal phthalocyanines with a certain amount of sulfur at 800～950 ℃. The results by field emission scanning electron microscopy(FE-SEM), high resolution transmission electron microscopy(HRTEM) and Raman spectroscopy(Raman) reveal that the as-synthesized CNTs(15～35 nm in diameter, 200～800 nm in length) are quite straight and well-graphitized with nearly no defects. Two kinds of mixed transition metal phthalocyanines(M(Ⅱ)Pc, M=Fe, Co) were used as carbon source to obtain uniform catalysts favoring the growth of the straight CNTs. The solid-state hybrid method is quite safe and efficient for synthesis of straight carbon nanotubes in large scale. |
| Keywords: straight carbon nanotubes phthalocyanine thermal chemical vapor deposition(TCVD) sulfur |
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| 况云华,李克智,李贺军,许占位,王永杰.二组元酞菁固相混合法裂解合成直立碳纳米管(英文)[J].无机化学学报,2009,25(6):951-955. |
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