| Summary: | 碩士 === 中州技術學院 === 工程技術研究所 === 92 === Abstract
This work synthesized carbon nanotubes(CNTs) by arc discharge in liquid environment and by chemical vapor deposition(CVD). When apply arc discharge in liquid environment, the effects of current and catalyst’s types and concentration on the synthesis of CNTs are investigated. Single wall carbon nanotubes、petal like and zigzag petal like grapheme sheets can be synthesized in deionized water or sodium chloride solution. Arc discharge in 0.1M iron nitrate with 50A current and 25~28V voltage can yield large quantites of CNTs. When CNTs were synthesized by CVD method, the effects of different reaction temperatures and catalyst’s types were studied. Pyrolyzing acetylene at 600~750℃ in a nitrogen environment on an aluminum substrate electroplated with iron particles can synthesized multiple nanojunction of CNTs, which contain aluminum and nitrogen. However, pyrolyzing acetylene on an aluminum substrate deposited with iron containing sol-gel will yield straight CNTs which also contain aluminum and nitrogen. Therefore, the catalyst’s type is a determining factor to
synthesize multiple nanojunction of CNTs.
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