Fe-Co双金属催化剂对纳米碳管规模化生产的影响

Influence on large-scale production of carbon nanotubes with bimetallic Fe-Co catalysts

在C2 H2 和N2 的氛围下 ,以Fe -Co双金属氧化物为催化剂 ,利用催化裂解法大量制备了多壁纳米碳管 .实验结果表明 ,以Fe -Co双金属氧化物为催化剂制备纳米碳管的产量明显高于Fe或Co单独存在时所得的纳米碳管的产量 ,且Fe摩尔分数为 0 2时效果最佳 ;同时发现 ,在制备的产品中存在很多螺旋形的纳米碳管 .此方法工艺简单 ,有利于纳米碳管的规模化、大批量生产 。

Large-scale mutil-waller carbon nanotubes have been synthesized by catalytic decomposition of C 2H 2 in N 2 atmosphere on bimetallic Fe-Co catalysts. It was demonstrated that the carbon nanotubes produced on Fe-Co bimetallic catalysts are more than those synthesized on Fe or Co single-metal catalyst. When the ratio of Fe and Co is 4∶1, the carbon nanotubes are best fromed. At the same time we found there were a lot of spiral carbon nanotubes. This method to produce carbon nanotubes is very simple, it's advantageous to synthesis carbon nanotubes with large-scale and mass production. It will be dispensable for us to research carbon nanotubes thorough and apply carbon nanotubes extensivly.