title: Effect of Varying Inert Gas and Acetylene Concentration on the Synthesis of Carbon Nanotubes.
abstract: The multiwalled carbon nanotubes (MWCNTs) with small diameter and high purity were achieved by chemical vapor deposition technique using silicon substrate. The introduction of specific concentration of inert gas with hydrocarbon played a key role in controlling morphology and diameter of MWCNTs. Nickel mixed ferrite nanoparticles were used as a catalyst for the growth of MWCNTs. Growth parameters like concentration of hydrocarbon source and inert gas flow, composition of catalyst particles and growth temperature were studied. In this work smaller diameter and twisted MWCNTs were formed by dilution of acetylene with argon gas. Electrical properties suggest a semimetallic behavior of synthesized MWCNTs.
authors.forename: Rahat
authors.initials: R
authors.lastname: Afrin
authors.forename: Syed Mustansar
authors.initials: SM
authors.lastname: Abbas
authors.forename: Nazar Abbas
authors.initials: NA
authors.lastname: Shah
authors.forename: Muhammad Farooq
authors.initials: MF
authors.lastname: Mustafa
authors.forename: Zulfiqar
authors.initials: Z
authors.lastname: Ali
authors.forename: Nisar
authors.initials: N
authors.lastname: Ahmad
mesh_terms: D000114:Acetylene / Q000032:analysis*; D005740:Gases / Q000032:analysis*; D008855:Microscopy, Electron, Scanning; D046529:Microscopy, Electron, Transmission; D037742:Nanotubes, Carbon; D014961:X-Ray Diffraction
chemical_list: D005740:Gases; D037742:Nanotubes, Carbon; D000114:Acetylene