过程工程学报
過程工程學報
과정공정학보
The Chinese Journal of Process Engineering
2006年
z2期
245-248
,共4页
陈正瀚%彭毓航%林鸿明%罗吉宗
陳正瀚%彭毓航%林鴻明%囉吉宗
진정한%팽육항%림홍명%라길종
multiwalled carbon nanombes%tetraethoxysilane%sol-gel method
A novel route to nanocomposites containing surface modified multiwalled carbon nanotubes (MWCNTs) by silica thin film is reported. The effect of chemical oxidation on the surface of MWCNTs by using different acid-treatments is studied.The acidic processes are characterized by Raman spectroscopy, thermogravimetry analysis, scanning electron microscopy, and transmission electron microscopy. MWCNTs can be coated homogeneously with silica film by using tetraethoxysilane (TEOS)as a precursor in a sol-gel process. Varying the shell thickness of amorphous silica coating layers on MWCNTs exhibits excellent thermal stability, reliability, and lifetime of field emission properties, especially down to less than 10 nm.
