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RISS 인기검색어
- 검색키워드
- 저자 : Sornsuwit, Nuttaphong (검색결과 2 건)
- 무료
- 기관 내 무료
- 유료
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Study of Multi-Walled Carbon Nanotube Synthesis Using Liquid Nitrogen and Post-Process Filtration
Sornsuwit, Nuttaphong,Maaithong, Worawut Korean Society for Precision Engineering 2008 International Journal of Precision Engineering and Vol.9 No.3
The study deals with the effects of parameters in the synthesis of carbon nanotubes in liquid nitrogen to find the most appropriate conditions such as electrical voltage and time that give carbon nanotubes with large volume and less proportion of impurity, which is a non-nanotubed carbon. The experiment employed the method of arc-discharge between graphite cathode and anode which are immersed in liquid nitrogen. The electrical DC current of 60A and 70A were applied with the time period ranging from 10 seconds to 25 seconds. It was found that the electrical current of 60A and 13 seconds arc-discharge time allowed the largest volume of carbon nanotubes generation. The longer time leads to more impurities around the carbon nanotubes. By the filtration of CNTs-suspended solution using 0.2 micrometers porous paper filter and the characterization using TEM, the carbon nanotubes synthesized in the study were approximately 25 layers multi-walled nanotubes with the average diameter of 18.2 nanometers.
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Study of Multi-Walled Carbon Nanotube Synthesis Using Liquid Nitrogen and Post-Process Filtration
Nuttaphong Sornsuwit,Worawut Maaithong 한국정밀공학회 2008 International Journal of Precision Engineering and Vol.9 No.3
The study deals with the effects of parameters in the synthesis of carbon nanotubes in liquid nitrogen to find the most appropriate conditions such as electrical voltage and time that give carbon nanotubes with large volume and less proportion of impurity, which is a non-nanotubed carbon. The experiment employed the method of arcdischarge between graphite cathode and anode which are immersed in liquid nitrogen. The electrical DC current of 60A and 70A were applied with the time period ranging from 10 seconds to 25 seconds. It was found that the electrical current of 60A and 13 seconds arc-discharge time allowed the largest volume of carbon nanotubes generation. The longer time leads to more impurities around the carbon nanotubes. By the filtration of CNTs-suspended solution using 0.2 micrometers porous paper filter and the characterization using TEM. the carbon nanotubes synthesized in the study were approximately 25 layers multi-walled nanotubes with the average diameter of 18.2 nanometers.
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