title: The effect of catalyst concentration on the synthesis of single-wall carbon nanotubes.
abstract: Single wall carbon nanotubes (SWNTs) were synthesized by electric arc discharge method with a mixture of nickel and yttrium as catalysts. The effect of the catalyst concentration on the synthesis of SWNTs was studied. Raman spectra of SWNTs have been recorded with excitation wavelengths from 476.5 to 1064 nm. The Raman peaks of the radial breathing modes (RBM) of SWNTs were assigned. The results indicate that the diameter distribution of SWNTs is in the range of 1.2-1.6 nm, and the SWNTs with diameter 1.43 nm are in the majority. The catalyst concentrations have large effect on the yield of SWNTs and little effect on the diameter distribution of SWNTs.
authors.affiliation: Department of Physics, Nankai University, Tianjin, People's Republic of China. yfwang@nankai.edu.cn
authors.forename: Yufang
authors.initials: Y
authors.lastname: Wang
authors.forename: Zhensheng
authors.initials: Z
authors.lastname: Zhang
authors.forename: Haoran
authors.initials: H
authors.lastname: Liu
authors.forename: Xiaoxuan
authors.initials: X
authors.lastname: Xu
authors.forename: Guiling
authors.initials: G
authors.lastname: Pan
authors.forename: Zunhuai
authors.initials: Z
authors.lastname: Guo
authors.forename: Youying
authors.initials: Y
authors.lastname: Liu
authors.forename: Xuanyou
authors.initials: X
authors.lastname: Han
authors.forename: Guoxiang
authors.initials: G
authors.lastname: Lan
mesh_terms: D017554:Carbon Compounds, Inorganic / Q000138:chemical synthesis* / Q000737:chemistry; D002384:Catalysis; D009532:Nickel; D015019:Yttrium
chemical_list: D017554:Carbon Compounds, Inorganic; D015019:Yttrium; D009532:Nickel