title: Structural analysis of multi-walled carbon nanocoils synthesized with Fe-Sn catalyst supported on zeolite.
abstract: Thin carbon nanocoil (CNC) with a fiber diameter of less than 50 nm was synthesized by catalytic chemical vapor deposition using Fe-Sn catalyst supported on zeolite. The chemical vapor deposition parameters of reaction temperature, gas flow rate of N2 as dilute gas and C2H2 as source gas were 650-750 degrees C, 1000 ml/min and 50-300 ml/min respectively. Transmission electron microscopic observation revealed that thin CNCs had a hollow and multi-walled structure with cylindrical graphitic layers. More than 90% of the CNCs obtained were multi-walled CNCs (MWCNCs), and the remainder was columnar CNCs without a hollow structure. Three-dimensional images of an MWCNC with Au nanoparticles on its surface were reconstructed by electron tomography and confirmed that the MWCNC had a three-dimensional helical shape.
authors: Department of Electrical and Electronic Engineering, Toyohashi University of Technology, 1-1 Hibarigaoka, Tempaku, Toyohashi, Aichi 441-8580, Japan.
authors: Masashi
authors: M
authors: Yokota
authors: Yoshiyuki
authors: Y
authors: Suda
authors: Hirofumi
authors: H
authors: Takikawa
authors: Hitoshi
authors: H
authors: Ue
authors: Kazuki
authors: K
authors: Shimizu
authors: Yoshito
authors: Y
authors: Umeda
mesh_terms: D002384:Catalysis; D003460:Crystallization / Q000379:methods*; D007501:Iron / Q000737:chemistry*; D046911:Macromolecular Substances / Q000737:chemistry; D008422:Materials Testing; D008968:Molecular Conformation; D036103:Nanotechnology / Q000379:methods; D037742:Nanotubes, Carbon / Q000737:chemistry* / Q000648:ultrastructure*; D010316:Particle Size; D013499:Surface Properties; D014001:Tin / Q000737:chemistry*; D017641:Zeolites / Q000737:chemistry*
chemical_list: D046911:Macromolecular Substances; D037742:Nanotubes, Carbon; D017641:Zeolites; D014001:Tin; D007501:Iron