The catalytic chemical vapor deposition (CCVD) is currently the most flexible and economically attractive method for the growth of carbon nanotubes. Although its principle is simple, the precisely controlled growth of carbon nanotubes remains very complex because many different parameters influence the growth process. In this article, we review our recent results obtained on the synthesis of ca...

Carbon nanocoil (CNC), which is synthesized by a catalytic chemical vapor deposition (CCVD) method, has a coil diameter of 300–900 nm and a length of several tens of μm. Although it is very small, CNC is predicted to have a high mechanical strength and hence is expected to have a use in nanodevices such as electromagnetic wave absorbers and field emitters. For nanodevice applications, it is nec...

In a sample produced by catalytic chemical vapor deposition (CCVD), the structure of the carbon nanotubes (diameter and helicity) which governs their electronic properties, is determined by electron diffraction. We found that most of the smallest bundles are constituted of identical double-walled carbon nanotubes.

Synthesis of clean double-walled carbon nanotubes by a catalytic chemical vapour deposition (CCVD) method is reported; the catalyst is a Mg(1 - x)Co(x)O solid solution containing additions of Mo oxide; this MgO-based catalyst can be easily removed, leading to gram-scale amounts of clean carbon nanotubes, 77% of which are double-walled carbon nanotubes.

Ultralong carbon nanotubes (UCNTs) are in high demand for nanocomposites applications due to their magnificent physical and chemical properties. UCNTs synthesized by the catalytic vapor deposition (CCVD) method and, before use as fillers nanocomposites, should be purified of residual catalyst non-CNT particles without significant destruction or scissoring UCNT. This study investigates role wate...

Bulk amount of single-walled carbon nanotubes (SWNTs) have been generated by laser-oven or arc-discharge techniques, and recently by catalytic chemical vapor deposition (CCVD) technique. CCVD technique is being intensively developed for the possibility of larger-scale production of high quality SWNTs at a low cost. We have demonstrated the high-quality generation of SWNTs by utilizing gas phase...

Statins have been recommended for use in atherosclerotic cardio-cerebrovascular disease (CCVD). The purpose of this study was to investigate the efficacy five different types statin secondary prevention CCVD patients. This retrospectively designed and analyzed data from National Health Insurance Service-National Korea. Participants aged 40 69 years were categorized into groups (atorvastatin, ro...

The Ni/SiO2 system is one of the most interesting to produce COx-free H2 and valuable carbon nanofibers (CNFs) by catalytic decomposition CH4. SiO2 effective support while Ni catalyst displays long life high activity. We studied chemical vapor deposition (CCVD) process CH4 within Ni/glass at relatively low temperature (600 °C) during times (3 h), varying amount (2.3–17.8% Ni(%)) source (100:200...

The one-step aerosol-assisted catalytic chemical vapor deposition (CCVD) process, when operated in a H2-based carrier gas, is shown to be effective at an extremely low ferrocene content (0.1 wt% toluene), which enables efficiently prepare forests of vertically aligned multiwalled carbon nanotubes (VACNTs) with high purity and good crystalline level. resulting iron VACNT sample only 0.5 correspo...