气相生长纳米碳纤维的形态控制

无机材料学报

气相生长纳米碳纤维的形态控制

朱春野; 谢自立; 郭坤敏

防化研究院北京 100083

收稿日期:2003-05-26 修回日期:2003-08-04 出版日期:2004-05-20 网络出版日期:2004-05-20

Morphology Control of Vapor Grown Carbon Nanofibers

ZHU Chun-Ye; XIE Zi-Li; GUO Kun-Min

Research Institute of Chemical Defense; Beijing 100083; China

Received:2003-05-26 Revised:2003-08-04 Published:2004-05-20 Online:2004-05-20

摘要/Abstract

摘要： 报道了在浮动催化系统中,催化剂、促进剂以及苯/氢气比例等因素对气相生长纳米碳纤维形态的决定性作用和不同结构形态纳米碳纤维的选择生长.利用控制催化剂前体和促进剂的含量以及苯与氢气的比例等因素,制备了平直碳纳米管、弯曲碳纳米管、碳珠/纳米碳纤维、纳米碳纤维等不同结构的气相生长纳米碳纤维.实验结果表明,在浮动催化系统中,调节催化剂和促进剂的含量以及苯与氢气的摩尔比等关键性因素可以实现对气相生长纳米碳纤维形态结构的控制.

关键词: 气相生长纳米碳纤维, 碳纳米管, 形态控制, 浮动催化法

Abstract: The influences of catalyst precursor, promoter and benzene to hydrogen mole ratio on the morphology of carbon filaments and selective preparation of carbon filaments by the floating catalyst method
were reported. By controlling the contents of ferrocene (catalyst precursor), thiophene (promoter) and benzene to hydrogen mole ratio, straight carbon nanotubes (S-CNTs), curving carbon nanotubes
(C-CNTs), beaded carbon nanofibers (B-CNF) and carbon nanofibers (CNF) were synthesized. Effects of different parameters, especially, critical role of catalyst, promoter and benzene to hydrogen mole
ratio were discussed. From TEM, Raman spectroscopy, HRTEM and TG-DSC analysis, it can be concluded that controllable growth of carbon filaments with different morphologies can be realized in the floating catalyst
system by simply controlling such parameters as catalyst, promoter and benzene to hydrogen mole ratio.

Key words: vapor grown carbon nano-fibers, carbon nanotubes, morphology control, floatingcatalyst method

中图分类号:

TB383

朱春野,谢自立,郭坤敏. 气相生长纳米碳纤维的形态控制[J]. 无机材料学报.

ZHU Chun-Ye,XIE Zi-Li,GUO Kun-Min. Morphology Control of Vapor Grown Carbon Nanofibers[J]. Journal of Inorganic Materials.

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