Growth of Vertically Aligned Carbon Nanotubes from Highly Active Fe–Ti–O Nanoparticles Prepared by Liquid-Phase Synthesis
スポンサーリンク
概要
- 論文の詳細を見る
Monodispersed Fe–Ti–O nanoparticles and Fe–O nanoparticles were prepared by liquid-phase synthesis to be used as catalysts for carbon nanotube (CNT) growth. Vertically aligned, dense CNTs were obtained in the case of Fe–Ti–O nanoparticles, whereas few CNTs were grown when Fe–O particles were used. CNTs with a diameter of $4.3\pm 0.7$ nm were grown from Fe–10 at. % Ti nanoparticles with a diameter of $3.8\pm 0.6$ nm. These CNTs mainly consist of double- and triple-walled CNTs. The catalytic activity of nanoparticles peaks at around 20–25 at. % Ti. The diameter controllability of Fe–20 at. % Ti nanoparticles was lower than that of Fe–10 at. % Ti nanoparticles, although a 200-μm-thick CNT forest was grown within 10 min. The energy-dispersive X-ray spectroscopy (EDS) analysis of the Fe–Ti–O nanoparticles before and after CNT growth revealed the depletion of Ti in the nanoparticles during the CNT growth, indicating the extraction of Ti from the nanoparticles.
- 2007-06-15
著者
-
YAMAMURO Saeki
Department of Materials Science and Engineering, Nagoya Institute of Technology
-
Sumiyama Kenji
Department Of Material Science And Technology Kyoto University
-
Inoue Takashi
Toyota Central R&d Labs Inc.
-
Gunjishima Itaru
Toyota Central R&D Laboratories, Inc., Nagakute, Aichi 480-1192, Japan
-
Okamoto Atsuto
Toyota Central R&D Lab., Inc., Nagakute, Aichi 480-1192, Japan
-
Yamamuro Saeki
Department of Materials Science and Engineering, Nagoya Institute of Technology, Nagoya 466-8555, Japan
-
SUMIYAMA Kenji
Department of Frontier Materials Graduate School of Engineering, Nagoya Institute of Technology
関連論文
- Magnetic and Electrical Properties of Nonequilibrium Fe-W Alloys Produced by Sputter Deposition
- Magnetic and Magnetovolume Properties of the Cu_3Au Type Ordered Fe-Pt Alloys around the γ-αPhase Boundary
- Paramagnetic Susceptibility in Fe-Pt Invar Alloys
- Low Temperature Thermal Expansion of Fe_Pt_ Invar Alloy
- Mossbauer Effect and NMR Studies of Fe_Pt_ Invar Alloy
- Magnetization, Thermal Expansion and Low Temperature Specific Heat of Fe_Pt_ Invar Alloy
- High Frequency Magnetic Property of Dense Fe_Ni_ Cluster Assembled Films
- Fe/Ni Cluster Hybrid Material Produced by Double Glow Discharge Sources
- Magnetic Properties of Nonequilibrium Fe-Cu-Ag Alloys Produced by Vapor Quenching
- Structural Characteristic of Outermost Surface of Cubic Mesoporous Silica Film
- Core/Shell Morphology in Ti Clusters Prepared by Plasma Gas Condensation and Post Annealing
- Morphology and Magnetic Properties of Fe and Al Nanocomposites Prepared with Single and Double-Glow-Discharge Sources
- Face-Centered Cubic Ti Cluster Assemblies Prepared by Plasma-Gas-Condensation
- Structure of Iron/Nickel Composite Cluster Assemblies Prepared by Double Glow-Discharge-Sources
- Crystal Structure of Fe-N Clusters Prepared by Plasma-Gas-Condensation
- Large Co Cluster Deposition on Naturally and Artificially Patterned Substrates
- Effects of O_2 Gas on the Size and Structure of Cr Clusters Formed by Plasma-Gas-Condensation
- Structural and Magnetic Properties of Nonequilibrium Disordered Fe-Al Alloys Produced by Facing Target Type DC Sputtering
- Synthesis of Zinc Sulfide Nanocrystals and Fabrication of Nanocrystal Superlattice
- Water-free Solution Synthesis of Monodisperse Cu_2S Nanocrystals
- Electrical Percolation during Codeposition of Fe and Si Clusters by a Dual Source PGCCD System
- High-Field Magnetic Susceptibility of Fe-Pt Alloys
- Effect of Ar Gas Pressure on Structure and Magnetic Properties of Sputter-Deposited Fe-Ag Alloys : Magnetism, Magnetic Materials and Devices
- Ti and Ni Cluster Composites Prepared by A Dual Source Plasma Gas Condensation Cluster Deposition System
- Magnetic Properties of Nonequilibrium Fe-Pd Alloys Produced by DC Triode Sputtering
- Synthesis of Chalcopyrite Nanoparticles via Thermal Decomposition of Metal-Thiolate
- Morphology and Composition-Controls of Cu_xS Nanocrystals Using Alkyl-Amine Ligands
- Magnetic Properties of Metastable bcc and fcc Fe-Cu Alloys Produced by Vapor Quenching
- XPS Valence Band and Core Level Spectra of Sputter-Deposited Fe-Cu,Fe-Ag and Fe-Cu-Ag Alloy Films
- Core-Shell Formation and Juxtaposition in Fe and Si Hybrid Clusters Prepared by Controlling the Collision Stages
- Hall Effect Studies in Fe_(Ni_Mn_x)_ Alloys
- In situ Optical Imaging of Carbon Nanotube Growth
- Improved Diameter Control of Carbon Nanotubes Using Fe–V–O Nanoparticles as the Catalyst
- Growth of Vertically Aligned Carbon Nanotubes from Highly Active Fe–Ti–O Nanoparticles Prepared by Liquid-Phase Synthesis
- Synthesis of Carbon Nanocoils by Two-step Growth Method Using Microwave Plasma-Enhanced Chemical Vapor Deposition
- Possibility of Exciton Mediated Superconductivity in Nano-Sized Sn/Si Core-Shell Clusters : A Process Technology towards Heterogeneous Material in Nano-Scale
- Electrical Resistivity and Magnetoresistance in Monodispersed Oxide-Coated Fe Cluster Assemblies
- Mossbauer Effect of Fine-Powdered Fe_Pt_ Invar Alloy
- Effect of Ar Gas Pressure on Magnetic Properties of Sputter-Deposited Fe–Cu Alloys
- Magnetic Properties of Cluster/Thin-Film Laminated Hybrids of Fe-Pt and Fe-Co Alloys
- Monodisperse Metallic Iron Nanoparticles Synthesized from Noncarbonyl Complex
- Electrical Resistivity of Carbon Micro Coil Measured by a Multi-Probe Unit Installed in a Scanning Electron Microscope
- Soft Magnetic Properties of High-Density Fe Cluster-Assembled Films by Energetic Cluster Deposition
- Effects of Oxygen Addition on Superconductivity of Sn Cluster-Assembled Films
- Electrical Resistivity and Morphology of Sn_/Si_x Core-Shell Cluster Network Prepared by a Plasma-Gas-Condensation Cluster Source
- Growth of Carbon Nanowalls on a SiO2 Substrate by Microwave Plasma-Enhanced Chemical Vapor Deposition