电弧放电法合成碳纳米管中等离子体射流温度分布的影响

Influence of Plasma Jet Temperature Profiles in Arc Discharge Methods of Carbon Nanotubes Synthesis.

作者信息

Raniszewski Grzegorz, Wiak Slawomir, Pietrzak Lukasz, Szymanski Lukasz, Kolacinski Zbigniew

机构信息

Institute of Mechatronics and Information Systems, Lodz University of Technology, 90-924 Lodz, Poland.

出版信息

Nanomaterials (Basel). 2017 Feb 23;7(3):50. doi: 10.3390/nano7030050.

DOI:10.3390/nano7030050

PMID:28336884

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5388153/

Abstract

One of the most common methods of carbon nanotubes (CNTs) synthesis is application of an electric-arc plasma. However, the final product in the form of cathode deposit is composed of carbon nanotubes and a variety of carbon impurities. An assay of carbon nanotubes produced in arc discharge systems available on the market shows that commercial cathode deposits contain about 10% CNTs. Given that the quality of the final product depends on carbon-plasma jet parameters, it is possible to increase the yield of the synthesis by plasma jet control. Most of the carbon nanotubes are multiwall carbon nanotubes (MWCNTs). It was observed that the addition of catalysts significantly changes the plasma composition, effective ionization potential, the arc channel conductance, and in effect temperature of the arc and carbon elements flux. This paper focuses on the influence of metal components on plasma-jet forming containing carbon nanotubes cathode deposit. The plasma jet temperature control system is presented.

摘要

碳纳米管（CNT）合成最常见的方法之一是应用电弧等离子体。然而，阴极沉积物形式的最终产物由碳纳米管和各种碳杂质组成。对市场上现有电弧放电系统生产的碳纳米管进行的分析表明，商业阴极沉积物含有约10%的碳纳米管。鉴于最终产品的质量取决于碳等离子体射流参数，通过控制等离子体射流提高合成产率是可能的。大多数碳纳米管是多壁碳纳米管（MWCNT）。据观察，添加催化剂会显著改变等离子体成分、有效电离电位、电弧通道电导，进而影响电弧温度和碳元素通量。本文重点研究金属成分对含碳纳米管阴极沉积物的等离子体射流形成的影响。介绍了等离子体射流温度控制系统。