Highly efficient microwave-assisted purification of multiwalled carbon nanotubes

Chu Jung Ko, Chung Yang Lee, Fu-Hsiang Ko*, Hsuen Li Chen, Tieh Chi Chu

*Corresponding author for this work

研究成果: Conference article同行評審

50 引文 斯高帕斯(Scopus)

摘要

We have developed a new technique for the microwave-assisted purification of multiwalled carbon nanotubes (MWNTs) in a closed vessel at 180°C for 30 min in the presence of 20% hydrogen peroxide. A comparison of the purification efficiencies of hydrogen peroxide and nitric acid was conducted using the gravimetric method and indicated that the former exhibits better at removing defects than the latter. A temperature of 180°C was suitable for the purification of nanotubes without decomposition, as evidenced by Raman spectroscopy and thermogravimetric analysis. Purification temperatures below 180°C were not effective in removing defects, while temperatures above 180°C decomposed the nanotubes. SEM images provide further evidence for the effectiveness of purification at 180°C. This technique is more efficient, with regard to energy and time, than conventional purification methods.

原文English
頁(從 - 到)570-577
頁數8
期刊Microelectronic Engineering
73-74
DOIs
出版狀態Published - 1 一月 2004
事件Micro and Nano Engineering 2003 - Cambridge, United Kingdom
持續時間: 22 九月 200325 九月 2003

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