The effects of carbon concentration in the precursor gas on the quality and quantity of carbon nanotubes synthesized by CVD method
作者： Reza M. Malek Abbaslou , Jafar Soltan , Ajay K. Dalai
DOI: 10.1016/J.APCATA.2009.10.025
关键词:
摘要: Abstract High purity, aligned multi-wall carbon nanotube (CNT) films were grown on quartz substrates in a chemical vapor deposition (CVD) process. In the CVD process, solution of ferrocene toluene was injected carrier gas Ar/H 2 , into horizontal tube. The CNTs analyzed by scanning and transmission electron microscopy, thermogravimetric analysis, Raman spectroscopy. Results for synthesized using wide range concentrations indicated that, concentration phase higher than ∼9.6 mol/m 3 catalyst deactivation due to encapsulation metal particles occurs. Sectional analysis reactor products showed that more 40% iron deposited first 10 cm section reactor, wherein diameters nanotubes (∼28 nm) are smaller (∼48 nm) exit region reactor. CNT diameter is closely related particle size which they grow. area close inlet, as film grows become trapped attached dense turn carbon-coated nanospheres top array.
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