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Microwave-Assisted Acid Digestion Method for Purification of Carbon Nanotubes
被引:5
|作者:
Pelech, I.
[1
]
Owodzin, K.
[1
]
Narkiewicz, U.
[1
]
机构:
[1] W Pomeranian Univ Technol, Inst Chem & Environm Engn, PL-70322 Szczecin, Poland
关键词:
Carbon nanotubes;
purification;
acid treatment;
microwave digestion;
thermogravimetric analysis;
D O I:
10.1080/1536383X.2012.655566
中图分类号:
O64 [物理化学(理论化学)、化学物理学];
学科分类号:
070304 ;
081704 ;
摘要:
The raw carbon nanotubes were obtained by chemical vapor deposition using ethylene as a carbon source and nanocrystalline iron as a catalyst. A microwave-assisted acid digestion method was applied to the purification. Carbon materials directly after the synthesis and treated under air atmosphere were immersed in the Teflon vessel filled with nitric or hydrochloric acid. Then the whole content was placed in the reactor heated with microwaves. Experiments were conducted under pressure in the range from 15 to 30 atm. The removal degree of catalyst particles was estimated using the thermogravimetric method.
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页码:439 / 443
页数:5
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