| 초록 |
Ferrocene, which is the most used metal catalyst precursor to investigate the floating-catalyst chemical vapor deposition (FCCVD) to grow the carbon nanotubes (CNTs), is an effective precursor for direct synthesis of high quality single-walled CNTs (SWCNTs). However, the dependence of CNTs synthesis on different precursor types has been less developed and lack of understanding is limit the controllability on synthesis of CNTs. Thus, it is needed to understand effect of precursors on Growth of CNTs on the molecular scale. With integration of in-situ TEM techniques into the mechanism of catalyst formation based on deep-injection FCCVD designed to overcome FCCVD, which is have difficulties to form a small and uniform catalyst, the different thermal decomposition behaviors of ferrocene and derivatives with various functional groups such as Ferrocene, Methylferrocene, Acetylferrocene and Ferrocenecarboxaldehyde were observed on a nanoscale utilizing in-situ TEM. The important insights about metal catalyst particle formation from precursors have been earned, which have improved our understanding mechanism. |
