2013 Fiscal Year Final Research Report
Structural determination of nanoparticulate catalysts during the synthesis of carbon nanomaterials using aberration-corrected environmental transmission electron microscopy
| Project/Area Number |
24710117
|
|---|
| Research Category |
Grant-in-Aid for Young Scientists (B)
|
| Allocation Type | Multi-year Fund |
|---|
| Research Field |
Nanomaterials/Nanobioscience
|
|---|
| Research Institution | Osaka University |
|---|
Principal Investigator |
YOSHIDA Hideto 大阪大学, 産業科学研究所, 准教授 (00452425)
|
|---|
| Project Period (FY) |
2012-04-01 – 2014-03-31
|
| Keywords | カーボンナノチューブ / ナノ粒子 / 触媒 / 欠陥 / 環境制御型透過電子顕微鏡 / その場観察 / 成長機構 / 界面構造 |
|---|
| Research Abstract |
We obtained new atomic-scale insights into the growth mechanism of carbon nanotubes from nanoparticle catalysts in chemical vapor deposition. Using environmental transmission electron microscopy, we observed that small deformations of nanoparticle catalysts at the interface with carbon nanotubes result in bends and disorder of the interlayer spacing of growing carbon nanotubes. Changes in the diameter and number of graphitic layers in growing carbon nanotubes are caused by large protrusions and shrink deformations of nanoparticle catalysts. Furthermore, we succeeded in determining the structure of fluctuating nanoparticle catalysts during carbon nanotube growth by comparing image simulations with the time-dependent environmental transmission electron microscope images.
|
