A5078504966- Carbon Nanotubes in Composites
- Graphene research and applications
- Diamond and Carbon-based Materials Research
- Fullerene Chemistry and Applications
- Laser-Ablation Synthesis of Nanoparticles
- Nanotechnology research and applications
- Nanowire Synthesis and Applications
- Catalytic Processes in Materials Science
- Advanced Photocatalysis Techniques
- Silicon Nanostructures and Photoluminescence
- Graphene and Nanomaterials Applications
- CO2 Reduction Techniques and Catalysts
- Gas Sensing Nanomaterials and Sensors
- Ion-surface interactions and analysis
- Nanopore and Nanochannel Transport Studies
- Fiber-reinforced polymer composites
- Thin-Film Transistor Technologies
- Graphite, nuclear technology, radiation studies
- Advancements in Battery Materials
- Carbon dioxide utilization in catalysis
- Advanced Sensor and Energy Harvesting Materials
- Semiconductor materials and devices
- TiO2 Photocatalysis and Solar Cells
- Laser Material Processing Techniques
- Smart Materials for Construction
Tokyo Institute of Technology
2023
Mie University
2011-2021
NEC (Japan)
2001-2015
Meijo University
2001-2006
Japan Science and Technology Agency
2006
University of Tsukuba
2002
Nagoya University
1998-2001
Ultrasonication of single-wall carbon nanotubes (SWNTs) in a monochlorobenzene (MCB) solution poly(methyl methacrylate) (PMMA) enabled us to react SWNTs with MCB or PMMA chemically. After the reacted these organic materials, they turned into ragged (r-SWNTs) many defects sidewall when burned oxygen. We think that sonochemical reaction and materials is simple method functionalize SWNTs.
ADVERTISEMENT RETURN TO ISSUEPREVCommunicationNEXTA Preparative Scale Synthesis of C36 by High-Temperature Laser-Vaporization: Purification and Identification C36H6 C36H6OAkira Koshio, Masayasu Inakuma, Toshiki Sugai, Hisanori ShinoharaView Author Information Department Chemistry, Nagoya University 464-8602, Japan Cite this: J. Am. Chem. Soc. 2000, 122, 2, 398–399Publication Date (Web):December 29, 1999Publication History Received22 September 1999Published online29 December inissue 1 January...
Large scale quantities of quasi-aligned carbon nanotube bundles have been synthesized by catalytic decomposition acetylene over well dispersed metal particles (cobalt and vanadium) embedded in commercially available zeolite at 700°C. Scanning electron microscopy analysis revealed the homogenous nature sample while transmission studies perfect graphitization as inner outer diameters tubes.
Electron emission from multiwall carbon nanotubes (CNTs) with a cone-shaped tip, on the apex of which five pentagons are present, has been studied by field microscopy (FEM). Two types FEM patterns were observed: one is well-defined “pentagon” pattern that typically observed for ordinal CNTs though number in case CNTs, and other “dim” usually single-wall CNTs. Appearance voltages respective transmission electron study suggest pentagon originate radii larger than approximately 2nm while dim...
A greatly improved synthesis of C36, obtained as its hydrides C36H4 and C36H6 oxyhydrides C36H4O C36H6O, via a high- temperature laser vaporization (laser-furnace) method the conventional DC arc-discharge is reported. We have found that doping metal catalysts such Ni/Co or Ni/Y into target graphite rod electrode, respectively, significantly enhanced production C36 species; methods been known for efficient single-wall carbon nanotubes (SWNTs). The results suggest catalytic formation species...
Single-walled carbon nanotubes (SWNTs) have been produced in high yield by the dc arc discharge technique under gravity-free conditions. Gravity-free conditions can reduce convection flow of buffer gas during discharge, which results increase thermostatic volume around flame. The yields both total soot and SWNTs are significantly increased. Raman spectroscopy transmission electron microscopy analyses reveal that diameter distribution has shifted to a larger region condition. annealing...
Fe-doped TiO 2 (Fe/TiO ) film photocatalyst was prepared by sol-gel and dip-coating process pulse arc plasma method. The effect of number on the CO reduction performance with Fe/TiO investigated in this study. In addition, reductants such as H O, , NH 3 /H O also investigated. characteristics coated a netlike glass fiber which is base material were analyzed SEM, EPMA, EDX, EPMA. Furthermore, tested under Xe lamp or without ultraviolet (UV) light. results show that 100 best and/or reductant...
We previously reported that highly dense multiwall carbon nanotubes (hd-MWNTs) with the innermost tube diameters of about 0.4 nm and outside 5−20 were obtained easily yields higher than 90% by evaporation graphite radio frequency (RF) plasma (Koshio et al. Chem. Phys. Lett. 2002, 356, 595). This report shows vacuum heat-treatment at 2200 °C or is useful to preferentially remove single three inside tubes from hd-MWNTs depending on temperatures. At same time, we found double-wall newly...
Low temperature transport in multiwalled carbon nanotubes (MWNTs) has been studied at different diameters and lengths, within $2\text{--}10\phantom{\rule{0.16em}{0ex}}\mathrm{nm}$, $0.3\text{--}3.5\phantom{\rule{0.16em}{0ex}}\ensuremath{\mu}\mathrm{m}$, respectively. In a majority of the samples, semiconductivity showed up as gap gate voltage controlled conduction, but metallic MWNTs are found all diameters. The is seen to be quantitatively determined by diameter dependent band gap, length...
Abstract Novel polyfluorene copolymers with pendant hydroxyl groups, poly[2,7‐(9,9‐dihexylfluorene)‐2,7‐(9,9‐bis(6‐hydroxyhexyl)fluorene)‐ co ‐2,7‐(9,9‐dihexylfluorene)‐1,4‐phenylene] (PFP‐OH) and ‐2,7‐(9,9‐dihexylfluorene)‐4,7‐(2,1,3‐benzothiadiazole)] (PFBT‐OH) were prepared. Acid‐catalyzed polycondensations of tetraethoxysilane carried out in the presence these polymers to obtain homogeneous hybrids. Photoluminescence spectra hybrids suggested immobilized silica matrix retaining their...