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首页> 外文期刊>Japanese Journal of Applied Physics. Part 1, Regular Papers, Brief Communications & Review Papers >New DC Arc Discharge Synthesis Method for Carbon Nanotubes Using Xylene Ferrocene as Floating Catalyst
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New DC Arc Discharge Synthesis Method for Carbon Nanotubes Using Xylene Ferrocene as Floating Catalyst

机译：二甲苯二茂铁为漂浮催化剂的碳纳米管直流电弧放电合成新方法

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摘要

A new synthesis method, a floating catalyst technique, was studied to produce carbon nanotubes in a DC arc discharge process. Xylene ferrocene was directly introduced into a DC arc chamber using a carrier gas. Experimental results showed that both multiwalled carbon nanotubes (MWNTs) and singlewalled carbon nanotubes (SWNTs) can be synthesized by this technique. The numbers of synthesized MWNTs and SWNTs varied depending on process conditions such as the flow rate of ferrocene, pressure, process current, and voltage. The yield of SWNTs was improved by increasing the flow rate of xylene ferrocene owing to the high density of the catalyst precursor used; however, it was reduced by decreasing the process current owing to the poor activation ability of the catalyst.
机译：研究了一种新的合成方法，一种浮动催化剂技术，该方法可在直流电弧放电过程中生产碳纳米管。使用载气将二甲苯二茂铁直接引入直流电弧室。实验结果表明，该技术可以合成多壁碳纳米管（MWNTs）和单壁碳纳米管（SWNTs）。合成的MWNT和SWNT的数量取决于工艺条件，例如二茂铁的流量，压力，工艺电流和电压。由于所用催化剂前体的高密度，通过增加二甲苯二茂铁的流速提高了SWNT的收率。然而，由于催化剂的活化能力差，通过降低工艺电流来降低它。

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