Formation of silicon carbide nanotubes and nanowires via reaction of silicon (from disproportionation of silicon monoxide) with carbon nanotubes.
One-dimensional silicon-carbon nanotubes and nanowires of various shapes and structures were synthesized via the reaction of silicon (produced by disproportionation reaction of SiO) with multiwalled carbon nanotubes (as templates) at different temperatures. A new type of multiwalled silicon carbide nanotube (SiCNT), with 3.5-4.5 A interlayer spacings, was observed in addition to the previously known beta-SiC (cubic zinc blende structure) nanowires and the biaxial SiC-SiO(x) nanowires. The SiCNT was identified by high-resolution transmission microscopy (HRTEM), elemental mapping, and electron energy loss spectroscopy (EELS). The multiwalled SiCNT was found to transform to a beta-SiC crystalline structure by electron beam annealing under TEM.
Sun
Xu-Hui
XH
Center of Super-Diamond and Advanced Films, Department of Biology and Chemistry, City University of Hong Kong, Hong Kong SAR, China.
Li
Chi-Pui
CP
Wong
Wing-Kwong
WK
Wong
Ning-Bew
NB
Lee
Chun-Sing
CS
Lee
Shuit-Tong
ST
Teo
Boon-Keng
BK