材料科学
成核
催化作用
粒径
碳纳米管
化学工程
一氧化碳
原材料
粒子(生态学)
碳纤维
纳米技术
复合材料
有机化学
复合数
化学
海洋学
地质学
工程类
作者
Robert L. Carver,Haiqing Peng,Anil K. Sadana,Pasha Nikolaev,Sivaram Arepalli,Clayton Scott,W. E. Billups,Robert H. Hauge,R. E. Smalley
摘要
Using the High Pressure carbon monoxide (HiPco) reactor we conducted an experiment on the effects of changing the catalyst concentration. With each catalyst concentration tested the resulting raw HiPco material was characterized for average SWNT lengths, SWNT diameters, residual iron particle size, and large fullerene content. We were able to determine trends in each of these characteristics as the catalyst concentration was changed. As the catalyst concentration was decreased SWNT lengths increased, SWNT diameters increased, the residual iron particle size increased, and the large fullerene content decreased. From these trends we have developed a Competitive Growth model for nucleation and growth of SWNTs via the HiPco process.
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